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Remove the support for using non-mpsafe filesystem modules.

Browse Source 
In particular, do not lock Giant conditionally when calling into the
filesystem module, remove the VFS_LOCK_GIANT() and related
macros. Stop handling buffers belonging to non-mpsafe filesystems.

The VFS_VERSION is bumped to indicate the interface change which does
not result in the interface signatures changes.

Conducted and reviewed by:	attilio
Tested by:	pho
This commit is contained in:
Konstantin Belousov 2012-10-22 17:50:54 +00:00
parent bf3d102133
commit 5050aa86cf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=241896
82 changed files with 292 additions and 1586 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ObsoleteFiles.inc
View File

@ -38,6 +38,8 @@
# xargs -n1 | sort | uniq -d;
# done
# 20121022: VFS_LOCK_GIANT elimination
OLD_FILES+=usr/share/man/man9/VFS_LOCK_GIANT.9.gz
# 20121004: remove incomplete unwind.h
OLD_FILES+=usr/include/clang/3.2/unwind.h
# 20120908: pf cleanup

8
cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
View File

@ -430,14 +430,6 @@ extern int fop_getattr(vnode_t *vp, vattr_t *vap);
#define vn_lock(vp, type)
#define VOP_UNLOCK(vp, type)
#ifdef VFS_LOCK_GIANT
#undef VFS_LOCK_GIANT
#endif
#define VFS_LOCK_GIANT(mp) 0
#ifdef VFS_UNLOCK_GIANT
#undef VFS_UNLOCK_GIANT
#endif
#define VFS_UNLOCK_GIANT(vfslocked)
extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
int x2, int x3);

2
share/man/man9/Makefile
View File

@ -280,7 +280,6 @@ MAN= accept_filter.9 \
vfs_getnewfsid.9 \
vfs_getopt.9 \
vfs_getvfs.9 \
VFS_LOCK_GIANT.9 \
VFS_MOUNT.9 \
vfs_mount.9 \
vfs_mountedfrom.9 \
@ -1413,7 +1412,6 @@ MLINKS+=vfs_getopt.9 vfs_copyopt.9 \
vfs_getopt.9 vfs_setopt.9 \
vfs_getopt.9 vfs_setopt_part.9 \
vfs_getopt.9 vfs_setopts.9
MLINKS+=VFS_LOCK_GIANT.9 VFS_UNLOCK_GIANT.9
MLINKS+=vhold.9 vdrop.9 \
vhold.9 vdropl.9 \
vhold.9 vholdl.9

93
share/man/man9/VFS_LOCK_GIANT.9
View File

@ -1,93 +0,0 @@
.\"
.\" Copyright (c) 2005 Robert N. M. Watson
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice(s), this list of conditions and the following disclaimer as
.\" the first lines of this file unmodified other than the possible
.\" addition of one or more copyright notices.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice(s), this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
.\" DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd September 21, 2005
.Dt VFS_LOCK_GIANT 9
.Os
.Sh NAME
.Nm VFS_LOCK_GIANT ,
.Nm VFS_UNLOCK_GIANT
.Nd "conditionally lock and unlock Giant around entry into VFS"
.Sh SYNOPSIS
.In sys/param.h
.In sys/mount.h
.In sys/vnode.h
.Ft int
.Fn VFS_LOCK_GIANT "struct mount *mp"
.Ft void
.Fn VFS_UNLOCK_GIANT "int vfslocked"
.Sh DESCRIPTION
.Fn VFS_LOCK_GIANT
will conditionally acquire the
.Va Giant
lock if the file system referenced by
.Fa mp
is marked as MPSAFE or not, returning a flag indicating whether
.Va Giant
was
set, which may later be passed to
.Fn VFS_UNLOCK_GIANT .
The value of
.Fa mp
will typically be derived from the mount pointer in a
.Vt vnode
on which a VFS operation will be performed.
.Pp
.Fn VFS_UNLOCK_GIANT
conditionally releases the
.Va Giant
lock if the passed
.Fa vfslocked
argument is non-zero.
It is expected that the argument will be derived from the return values of
.Fn VFS_LOCK_GIANT
or
.Xr NDHASGIANT 9 .
.Sh RETURN VALUES
.Fn VFS_LOCK_GIANT
returns a boolean indicating whether or not
.Va Giant
was acquired.
.Sh SEE ALSO
.Xr mutex 9 ,
.Xr NDHASGIANT 9 ,
.Xr vnode 9
.Sh AUTHORS
.An -nosplit
MPSAFE VFS support for
.Fx
was implemented by
.An Jeff Roberson .
.Pp
This manual page was written by
.An Robert Watson .
.Sh BUGS
Non-MPSAFE file systems exist, requiring callers conditional locking and
unlocking of
.Va Giant .

14
share/man/man9/namei.9
View File

@ -168,19 +168,6 @@ This flag allows the
function to return the parent (directory) vnode in an unlocked state.
The parent vnode must be released separately by using
.Xr vrele 9 .
.It Dv MPSAFE
With this flag set,
.Fn namei
will conditionally acquire
.Va Giant
if it is required by a traversed file system.
MPSAFE callers should pass the results of
.Fn NDHASGIANT
to
.Xr VFS_UNLOCK_GIANT
in order to conditionally release
.Va Giant
if necessary.
.It Dv NOCACHE
Avoid
.Fn namei
@ -354,7 +341,6 @@ An attempt is made to modify a file or directory on a read-only file system.
.Xr uio 9 ,
.Xr uma 9 ,
.Xr VFS 9 ,
.Xr VFS_UNLOCK_GIANT 9 ,
.Xr vnode 9 ,
.Xr vput 9 ,
.Xr vref 9

21
sys/cam/ctl/ctl_backend_block.c
View File

@ -594,14 +594,12 @@ ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun,
{
union ctl_io *io;
struct mount *mountpoint;
int vfs_is_locked, error, lock_flags;
int error, lock_flags;
DPRINTF("entered\n");
io = beio->io;
vfs_is_locked = VFS_LOCK_GIANT(be_lun->vn->v_mount);
(void) vn_start_write(be_lun->vn, &mountpoint, V_WAIT);
if (MNT_SHARED_WRITES(mountpoint)
@ -621,8 +619,6 @@ ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun,
vn_finished_write(mountpoint);
VFS_UNLOCK_GIANT(vfs_is_locked);
if (error == 0)
ctl_set_success(&io->scsiio);
else {
@ -648,7 +644,7 @@ ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun,
union ctl_io *io;
struct uio xuio;
struct iovec *xiovec;
int vfs_is_locked, flags;
int flags;
int error, i;
DPRINTF("entered\n");
@ -681,7 +677,6 @@ ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun,
xiovec->iov_len = beio->sg_segs[i].len;
}
vfs_is_locked = VFS_LOCK_GIANT(be_lun->vn->v_mount);
if (beio->bio_cmd == BIO_READ) {
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
@ -754,7 +749,6 @@ ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun,
vn_finished_write(mountpoint);
}
VFS_UNLOCK_GIANT(vfs_is_locked);
/*
* If we got an error, set the sense data to "MEDIUM ERROR" and
@ -1478,7 +1472,6 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun)
DROP_GIANT();
if (be_lun->vn) {
int flags = FREAD | FWRITE;
int vfs_is_locked = 0;
switch (be_lun->dev_type) {
case CTL_BE_BLOCK_DEV:
@ -1490,7 +1483,6 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun)
}
break;
case CTL_BE_BLOCK_FILE:
vfs_is_locked = VFS_LOCK_GIANT(be_lun->vn->v_mount);
break;
case CTL_BE_BLOCK_NONE:
default:
@ -1505,7 +1497,6 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun)
case CTL_BE_BLOCK_DEV:
break;
case CTL_BE_BLOCK_FILE:
VFS_UNLOCK_GIANT(vfs_is_locked);
if (be_lun->backend.file.cred != NULL) {
crfree(be_lun->backend.file.cred);
be_lun->backend.file.cred = NULL;
@ -1529,7 +1520,6 @@ ctl_be_block_open(struct ctl_be_block_softc *softc,
struct nameidata nd;
int flags;
int error;
int vfs_is_locked;
/*
* XXX KDM allow a read-only option?
@ -1587,8 +1577,6 @@ ctl_be_block_open(struct ctl_be_block_softc *softc,
return (error);
}
vfs_is_locked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
be_lun->vn = nd.ni_vp;
@ -1604,7 +1592,6 @@ ctl_be_block_open(struct ctl_be_block_softc *softc,
"%s is not a disk or file", be_lun->dev_path);
}
VOP_UNLOCK(be_lun->vn, 0);
VFS_UNLOCK_GIANT(vfs_is_locked);
if (error != 0) {
ctl_be_block_close(be_lun);
@ -2090,7 +2077,7 @@ ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
{
struct ctl_lun_modify_params *params;
struct ctl_be_block_lun *be_lun;
int vfs_is_locked, error;
int error;
params = &req->reqdata.modify;
@ -2120,7 +2107,6 @@ ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
}
}
vfs_is_locked = VFS_LOCK_GIANT(be_lun->vn->v_mount);
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
if (be_lun->vn->v_type == VREG)
@ -2129,7 +2115,6 @@ ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
error = ctl_be_block_modify_dev(be_lun, req);
VOP_UNLOCK(be_lun->vn, 0);
VFS_UNLOCK_GIANT(vfs_is_locked);
if (error != 0)
goto bailout_error;

25
sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c
View File

@ -69,7 +69,7 @@ kobj_open_file_vnode(const char *file)
struct thread *td = curthread;
struct filedesc *fd;
struct nameidata nd;
int error, flags, vfslocked;
int error, flags;
fd = td->td_proc->p_fd;
FILEDESC_XLOCK(fd);
@ -84,15 +84,13 @@ kobj_open_file_vnode(const char *file)
FILEDESC_XUNLOCK(fd);
flags = FREAD | O_NOFOLLOW;
NDINIT(&nd, LOOKUP, MPSAFE, UIO_SYSSPACE, file, td);
NDINIT(&nd, LOOKUP, 0, UIO_SYSSPACE, file, td);
error = vn_open_cred(&nd, &flags, 0, 0, curthread->td_ucred, NULL);
if (error != 0)
return (NULL);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
/* We just unlock so we hold a reference. */
VOP_UNLOCK(nd.ni_vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
return (nd.ni_vp);
}
@ -130,15 +128,13 @@ kobj_get_filesize_vnode(struct _buf *file, uint64_t *size)
{
struct vnode *vp = file->ptr;
struct vattr va;
int error, vfslocked;
int error;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(vp, &va, curthread->td_ucred);
VOP_UNLOCK(vp, 0);
if (error == 0)
*size = (uint64_t)va.va_size;
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -171,7 +167,7 @@ kobj_read_file_vnode(struct _buf *file, char *buf, unsigned size, unsigned off)
struct thread *td = curthread;
struct uio auio;
struct iovec aiov;
int error, vfslocked;
int error;
bzero(&aiov, sizeof(aiov));
bzero(&auio, sizeof(auio));
@ -187,11 +183,9 @@ kobj_read_file_vnode(struct _buf *file, char *buf, unsigned size, unsigned off)
auio.uio_resid = size;
auio.uio_td = td;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_READ(vp, &auio, IO_UNIT | IO_SYNC, td->td_ucred);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
return (error != 0 ? -1 : size - auio.uio_resid);
}
@ -221,14 +215,7 @@ void
kobj_close_file(struct _buf *file)
{
if (file->mounted) {
struct vnode *vp = file->ptr;
struct thread *td = curthread;
int vfslocked;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_close(vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
}
if (file->mounted)
vn_close(file->ptr, FREAD, curthread->td_ucred, curthread);
kmem_free(file, sizeof(*file));
}

2
sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c
View File

@ -54,7 +54,7 @@ lookupnameat(char *dirname, enum uio_seg seg, enum symfollow follow,
vref(startvp);
ltype = VOP_ISLOCKED(startvp);
VOP_UNLOCK(startvp, 0);
NDINIT_ATVP(&nd, LOOKUP, LOCKLEAF | MPSAFE | follow, seg, dirname,
NDINIT_ATVP(&nd, LOOKUP, LOCKLEAF | follow, seg, dirname,
startvp, curthread);
error = namei(&nd);
*compvpp = nd.ni_vp;

14
sys/cddl/compat/opensolaris/sys/vnode.h
View File

@ -193,7 +193,7 @@ vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode,
if (startvp != NULL)
vref(startvp);
NDINIT_ATVP(&nd, operation, MPSAFE, UIO_SYSSPACE, pnamep, startvp, td);
NDINIT_ATVP(&nd, operation, 0, UIO_SYSSPACE, pnamep, startvp, td);
filemode |= O_NOFOLLOW;
error = vn_open_cred(&nd, &filemode, createmode, 0, td->td_ucred, NULL);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -223,13 +223,12 @@ zfs_vn_rdwr(enum uio_rw rw, vnode_t *vp, caddr_t base, ssize_t len,
ssize_t *residp)
{
struct thread *td = curthread;
int error, vfslocked;
int error;
ssize_t resid;
ASSERT(ioflag == 0);
ASSERT(ulimit == RLIM64_INFINITY);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (rw == UIO_WRITE) {
ioflag = IO_SYNC;
} else {
@ -237,7 +236,6 @@ zfs_vn_rdwr(enum uio_rw rw, vnode_t *vp, caddr_t base, ssize_t len,
}
error = vn_rdwr(rw, vp, base, len, offset, seg, ioflag, cr, NOCRED,
&resid, td);
VFS_UNLOCK_GIANT(vfslocked);
if (residp != NULL)
*residp = (ssize_t)resid;
return (error);
@ -249,11 +247,10 @@ static __inline int
zfs_vop_fsync(vnode_t *vp, int flag, cred_t *cr)
{
struct mount *mp;
int error, vfslocked;
int error;
ASSERT(flag == FSYNC);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
goto drop;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
@ -261,7 +258,6 @@ zfs_vop_fsync(vnode_t *vp, int flag, cred_t *cr)
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
drop:
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
#define VOP_FSYNC(vp, flag, cr, ct) zfs_vop_fsync((vp), (flag), (cr))
@ -269,14 +265,12 @@ zfs_vop_fsync(vnode_t *vp, int flag, cred_t *cr)
static __inline int
zfs_vop_close(vnode_t *vp, int flag, int count, offset_t offset, cred_t *cr)
{
int error, vfslocked;
int error;
ASSERT(count == 1);
ASSERT(offset == 0);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_close(vp, flag, cr, curthread);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
#define VOP_CLOSE(vp, oflags, count, offset, cr, ct) \

4
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c
View File

@ -54,7 +54,7 @@ vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
vdev_file_t *vf;
vnode_t *vp;
vattr_t vattr;
int error, vfslocked;
int error;
/*
* We must have a pathname, and it must be absolute.
@ -114,11 +114,9 @@ vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
* Determine the physical size of the file.
*/
vattr.va_mask = AT_SIZE;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(vp, &vattr, kcred);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
if (error) {
(void) VOP_CLOSE(vp, spa_mode(vd->vdev_spa), 1, 0, kcred, NULL);
vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;

11
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
View File

@ -1092,14 +1092,12 @@ zfs_get_done(zgd_t *zgd, int error)
{
znode_t *zp = zgd->zgd_private;
objset_t *os = zp->z_zfsvfs->z_os;
int vfslocked;
if (zgd->zgd_db)
dmu_buf_rele(zgd->zgd_db, zgd);
zfs_range_unlock(zgd->zgd_rl);
vfslocked = VFS_LOCK_GIANT(zp->z_zfsvfs->z_vfs);
/*
* Release the vnode asynchronously as we currently have the
* txg stopped from syncing.
@ -1110,7 +1108,6 @@ zfs_get_done(zgd_t *zgd, int error)
zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
kmem_free(zgd, sizeof (zgd_t));
VFS_UNLOCK_GIANT(vfslocked);
}
#ifdef DEBUG
@ -6337,7 +6334,7 @@ vop_getextattr {
}
flags = FREAD;
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, attrname,
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname,
xvp, td);
error = vn_open_cred(&nd, &flags, 0, 0, ap->a_cred, NULL);
vp = nd.ni_vp;
@ -6405,7 +6402,7 @@ vop_deleteextattr {
return (error);
}
NDINIT_ATVP(&nd, DELETE, NOFOLLOW | LOCKPARENT | LOCKLEAF | MPSAFE,
NDINIT_ATVP(&nd, DELETE, NOFOLLOW | LOCKPARENT | LOCKLEAF,
UIO_SYSSPACE, attrname, xvp, td);
error = namei(&nd);
vp = nd.ni_vp;
@ -6472,7 +6469,7 @@ vop_setextattr {
}
flags = FFLAGS(O_WRONLY | O_CREAT);
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, attrname,
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname,
xvp, td);
error = vn_open_cred(&nd, &flags, 0600, 0, ap->a_cred, NULL);
vp = nd.ni_vp;
@ -6553,7 +6550,7 @@ vop_listextattr {
return (error);
}
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKSHARED | MPSAFE,
NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKSHARED,
UIO_SYSSPACE, ".", xvp, td);
error = namei(&nd);
vp = nd.ni_vp;

3
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
View File

@ -1404,7 +1404,6 @@ zfs_zinactive(znode_t *zp)
vnode_t *vp = ZTOV(zp);
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
uint64_t z_id = zp->z_id;
int vfslocked;
ASSERT(zp->z_sa_hdl);
@ -1437,9 +1436,7 @@ zfs_zinactive(znode_t *zp)
ZFS_OBJ_HOLD_EXIT(zfsvfs, z_id);
ASSERT(vp->v_count == 0);
vrecycle(vp);
vfslocked = VFS_LOCK_GIANT(zfsvfs->z_vfs);
zfs_rmnode(zp);
VFS_UNLOCK_GIANT(vfslocked);
return;
}

9
sys/compat/linprocfs/linprocfs.c
View File

@ -335,7 +335,7 @@ linprocfs_domtab(PFS_FILL_ARGS)
int error;
/* resolve symlinks etc. in the emulation tree prefix */
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path, td);
flep = NULL;
error = namei(&nd);
lep = linux_emul_path;
@ -343,7 +343,6 @@ linprocfs_domtab(PFS_FILL_ARGS)
if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) == 0)
lep = dlep;
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
}
lep_len = strlen(lep);
@ -414,7 +413,7 @@ linprocfs_dopartitions(PFS_FILL_ARGS)
int major, minor;
/* resolve symlinks etc. in the emulation tree prefix */
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path, td);
flep = NULL;
error = namei(&nd);
lep = linux_emul_path;
@ -422,7 +421,6 @@ linprocfs_dopartitions(PFS_FILL_ARGS)
if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) == 0)
lep = dlep;
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
}
lep_len = strlen(lep);
@ -1012,7 +1010,6 @@ linprocfs_doprocmaps(PFS_FILL_ARGS)
int error;
struct vnode *vp;
struct vattr vat;
int locked;
PROC_LOCK(p);
error = p_candebug(td, p);
@ -1065,12 +1062,10 @@ linprocfs_doprocmaps(PFS_FILL_ARGS)
VM_OBJECT_UNLOCK(obj);
if (vp) {
vn_fullpath(td, vp, &name, &freename);
locked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
VOP_GETATTR(vp, &vat, td->td_ucred);
ino = vat.va_fileid;
vput(vp);
VFS_UNLOCK_GIANT(locked);
}
} else {
flags = 0;

5
sys/compat/linux/linux_file.c
View File

@ -337,7 +337,7 @@ getdents_common(struct thread *td, struct linux_getdents64_args *args,
struct l_dirent64 *linux_dirent64;
int buflen, error, eofflag, nbytes, justone;
u_long *cookies = NULL, *cookiep;
int ncookies, vfslocked;
int ncookies;
nbytes = args->count;
if (nbytes == 1) {
@ -359,9 +359,7 @@ getdents_common(struct thread *td, struct linux_getdents64_args *args,
off = foffset_lock(fp, 0);
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) {
VFS_UNLOCK_GIANT(vfslocked);
foffset_unlock(fp, off, 0);
fdrop(fp, td);
return (EINVAL);
@ -521,7 +519,6 @@ getdents_common(struct thread *td, struct linux_getdents64_args *args,
free(cookies, M_TEMP);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
foffset_unlock(fp, off, 0);
fdrop(fp, td);
free(buf, M_TEMP);

11
sys/compat/linux/linux_misc.c
View File

@ -247,7 +247,7 @@ linux_uselib(struct thread *td, struct linux_uselib_args *args)
char *library;
ssize_t aresid;
int error;
int locked, vfslocked;
int locked;
LCONVPATHEXIST(td, args->library, &library);
@ -257,11 +257,10 @@ linux_uselib(struct thread *td, struct linux_uselib_args *args)
#endif
a_out = NULL;
vfslocked = 0;
locked = 0;
vp = NULL;
NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_SYSSPACE, library, td);
error = namei(&ni);
LFREEPATH(library);
@ -269,7 +268,6 @@ linux_uselib(struct thread *td, struct linux_uselib_args *args)
goto cleanup;
vp = ni.ni_vp;
vfslocked = NDHASGIANT(&ni);
NDFREE(&ni, NDF_ONLY_PNBUF);
/*
@ -393,7 +391,6 @@ linux_uselib(struct thread *td, struct linux_uselib_args *args)
*/
locked = 0;
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
/*
* Check if file_offset page aligned. Currently we cannot handle
@ -463,10 +460,8 @@ linux_uselib(struct thread *td, struct linux_uselib_args *args)
cleanup:
/* Unlock vnode if needed */
if (locked) {
if (locked)
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
}
/* Release the temporary mapping. */
if (a_out)

13
sys/compat/ndis/subr_ndis.c
View File

@ -2741,7 +2741,7 @@ NdisOpenFile(status, filehandle, filelength, filename, highestaddr)
char *afilename = NULL;
struct thread *td = curthread;
struct nameidata nd;
int flags, error, vfslocked;
int flags, error;
struct vattr vat;
struct vattr *vap = &vat;
ndis_fh *fh;
@ -2821,7 +2821,7 @@ NdisOpenFile(status, filehandle, filelength, filename, highestaddr)
if (td->td_proc->p_fd->fd_cdir == NULL)
td->td_proc->p_fd->fd_cdir = rootvnode;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
@ -2833,7 +2833,6 @@ NdisOpenFile(status, filehandle, filelength, filename, highestaddr)
free(afilename, M_DEVBUF);
return;
}
vfslocked = NDHASGIANT(&nd);
ExFreePool(path);
@ -2842,7 +2841,6 @@ NdisOpenFile(status, filehandle, filelength, filename, highestaddr)
/* Get the file size. */
VOP_GETATTR(nd.ni_vp, vap, td->td_ucred);
VOP_UNLOCK(nd.ni_vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fh->nf_vp = nd.ni_vp;
fh->nf_map = NULL;
@ -2862,7 +2860,7 @@ NdisMapFile(status, mappedbuffer, filehandle)
struct thread *td = curthread;
linker_file_t lf;
caddr_t kldstart;
int error, vfslocked;
int error;
ssize_t resid;
struct vnode *vp;
@ -2903,10 +2901,8 @@ NdisMapFile(status, mappedbuffer, filehandle)
}
vp = fh->nf_vp;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_rdwr(UIO_READ, vp, fh->nf_map, fh->nf_maplen, 0,
UIO_SYSSPACE, 0, td->td_ucred, NOCRED, &resid, td);
VFS_UNLOCK_GIANT(vfslocked);
if (error)
*status = NDIS_STATUS_FAILURE;
@ -2937,7 +2933,6 @@ NdisCloseFile(filehandle)
{
struct thread *td = curthread;
ndis_fh *fh;
int vfslocked;
struct vnode *vp;
if (filehandle == NULL)
@ -2955,9 +2950,7 @@ NdisCloseFile(filehandle)
if (fh->nf_type == NDIS_FH_TYPE_VFS) {
vp = fh->nf_vp;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_close(vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
}
fh->nf_vp = NULL;

18
sys/compat/svr4/svr4_misc.c
View File

@ -241,7 +241,7 @@ svr4_sys_getdents64(td, uap)
struct iovec aiov;
off_t off;
struct svr4_dirent64 svr4_dirent;
int buflen, error, eofflag, nbytes, justone, vfslocked;
int buflen, error, eofflag, nbytes, justone;
u_long *cookies = NULL, *cookiep;
int ncookies;
@ -258,9 +258,7 @@ svr4_sys_getdents64(td, uap)
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) {
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return (EINVAL);
}
@ -397,7 +395,6 @@ svr4_sys_getdents64(td, uap)
td->td_retval[0] = nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookies)
free(cookies, M_TEMP);
@ -422,7 +419,7 @@ svr4_sys_getdents(td, uap)
struct iovec aiov;
struct svr4_dirent idb;
off_t off; /* true file offset */
int buflen, error, eofflag, vfslocked;
int buflen, error, eofflag;
u_long *cookiebuf = NULL, *cookie;
int ncookies = 0, *retval = td->td_retval;
@ -439,9 +436,7 @@ svr4_sys_getdents(td, uap)
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) {
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return (EINVAL);
}
@ -534,7 +529,6 @@ svr4_sys_getdents(td, uap)
*retval = uap->nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookiebuf)
free(cookiebuf, M_TEMP);
@ -614,7 +608,7 @@ svr4_sys_fchroot(td, uap)
struct filedesc *fdp = td->td_proc->p_fd;
struct vnode *vp;
struct file *fp;
int error, vfslocked;
int error;
if ((error = priv_check(td, PRIV_VFS_FCHROOT)) != 0)
return error;
@ -624,7 +618,6 @@ svr4_sys_fchroot(td, uap)
vp = fp->f_vnode;
VREF(vp);
fdrop(fp, td);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = change_dir(vp, td);
if (error)
@ -637,11 +630,9 @@ svr4_sys_fchroot(td, uap)
VOP_UNLOCK(vp, 0);
error = change_root(vp, td);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
fail:
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1652,13 +1643,12 @@ svr4_sys_resolvepath(td, uap)
int error, *retval = td->td_retval;
unsigned int ncopy;
NDINIT(&nd, LOOKUP, NOFOLLOW | SAVENAME | MPSAFE, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, NOFOLLOW | SAVENAME, UIO_USERSPACE,
uap->path, td);
if ((error = namei(&nd)) != 0)
return (error);
NDFREE(&nd, NDF_NO_FREE_PNBUF);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
ncopy = min(uap->bufsiz, strlen(nd.ni_cnd.cn_pnbuf) + 1);
if ((error = copyout(nd.ni_cnd.cn_pnbuf, uap->buf, ncopy)) != 0)

3
sys/conf/NOTES
View File

@ -1088,9 +1088,6 @@ options REISERFS
# unsuitable for inclusion on machines with untrusted local users.
options VFS_AIO
# Enable mounting of non-MPSAFE filesystems.
options VFS_ALLOW_NONMPSAFE
# Cryptographically secure random number generator; /dev/random
device random

1
sys/conf/options
View File

@ -188,7 +188,6 @@ SW_WATCHDOG opt_watchdog.h
TURNSTILE_PROFILING
UMTX_PROFILING
VFS_AIO
VFS_ALLOW_NONMPSAFE
VERBOSE_SYSINIT opt_global.h
WLCACHE opt_wavelan.h
WLDEBUG opt_wavelan.h

3
sys/dev/hwpmc/hwpmc_mod.c
View File

@ -1632,7 +1632,6 @@ pmc_log_kernel_mappings(struct pmc *pm)
static void
pmc_log_process_mappings(struct pmc_owner *po, struct proc *p)
{
int locked;
vm_map_t map;
struct vnode *vp;
struct vmspace *vm;
@ -1742,9 +1741,7 @@ pmc_log_process_mappings(struct pmc_owner *po, struct proc *p)
pmc_getfilename(vp, &fullpath, &freepath);
last_vp = vp;
locked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(locked);
vp = NULL;
pmclog_process_map_in(po, p->p_pid, start_addr, fullpath);

18
sys/dev/md/md.c
View File

@ -512,7 +512,7 @@ mdstart_preload(struct md_s *sc, struct bio *bp)
static int
mdstart_vnode(struct md_s *sc, struct bio *bp)
{
int error, vfslocked;
int error;
struct uio auio;
struct iovec aiov;
struct mount *mp;
@ -542,13 +542,11 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
*/
if (bp->bio_cmd == BIO_FLUSH) {
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
(void) vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_FSYNC(vp, MNT_WAIT, td);
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -570,7 +568,6 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
auio.uio_rw = UIO_WRITE;
auio.uio_td = td;
end = bp->bio_offset + bp->bio_length;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
(void) vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = 0;
@ -588,7 +585,6 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
bp->bio_resid = end - auio.uio_offset;
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -610,7 +606,6 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
* When reading set IO_DIRECT to try to avoid double-caching
* the data. When writing IO_DIRECT is not optimal.
*/
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (bp->bio_cmd == BIO_READ) {
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_READ(vp, &auio, IO_DIRECT, sc->cred);
@ -623,7 +618,6 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
}
VFS_UNLOCK_GIANT(vfslocked);
bp->bio_resid = auio.uio_resid;
return (error);
}
@ -957,7 +951,7 @@ mdcreate_vnode(struct md_s *sc, struct md_ioctl *mdio, struct thread *td)
struct vattr vattr;
struct nameidata nd;
char *fname;
int error, flags, vfslocked;
int error, flags;
/*
* Kernel-originated requests must have the filename appended
@ -976,11 +970,10 @@ mdcreate_vnode(struct md_s *sc, struct md_ioctl *mdio, struct thread *td)
* set the FWRITE mask before trying to open the backing store.
*/
flags = FREAD | ((mdio->md_options & MD_READONLY) ? 0 : FWRITE);
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, sc->file, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, sc->file, td);
error = vn_open(&nd, &flags, 0, NULL);
if (error != 0)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_vp->v_type != VREG) {
error = EINVAL;
@ -1016,19 +1009,16 @@ mdcreate_vnode(struct md_s *sc, struct md_ioctl *mdio, struct thread *td)
nd.ni_vp->v_vflag &= ~VV_MD;
goto bad;
}
VFS_UNLOCK_GIANT(vfslocked);
return (0);
bad:
VOP_UNLOCK(nd.ni_vp, 0);
(void)vn_close(nd.ni_vp, flags, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
static int
mddestroy(struct md_s *sc, struct thread *td)
{
int vfslocked;
if (sc->gp) {
sc->gp->softc = NULL;
@ -1050,13 +1040,11 @@ mddestroy(struct md_s *sc, struct thread *td)
mtx_unlock(&sc->queue_mtx);
mtx_destroy(&sc->queue_mtx);
if (sc->vnode != NULL) {
vfslocked = VFS_LOCK_GIANT(sc->vnode->v_mount);
vn_lock(sc->vnode, LK_EXCLUSIVE | LK_RETRY);
sc->vnode->v_vflag &= ~VV_MD;
VOP_UNLOCK(sc->vnode, 0);
(void)vn_close(sc->vnode, sc->flags & MD_READONLY ?
FREAD : (FREAD|FWRITE), sc->cred, td);
VFS_UNLOCK_GIANT(vfslocked);
}
if (sc->cred != NULL)
crfree(sc->cred);

12
sys/dev/nand/nandsim_swap.c
View File

@ -142,9 +142,9 @@ static int
swap_file_open(struct chip_swap *swap, const char *swap_file)
{
struct nameidata nd;
int vfslocked, flags, error;
int flags, error;
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, swap_file,
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, swap_file,
curthread);
flags = FWRITE | FREAD | O_NOFOLLOW | O_CREAT | O_TRUNC;
@ -157,12 +157,10 @@ swap_file_open(struct chip_swap *swap, const char *swap_file)
}
swap->swap_cred = crhold(curthread->td_ucred);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
/* We just unlock so we hold a reference */
VOP_UNLOCK(nd.ni_vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
swap->swap_vp = nd.ni_vp;
@ -192,7 +190,6 @@ swap_file_write(struct chip_swap *swap, struct block_state *blk_state)
struct vnode *vp;
struct uio auio;
struct iovec aiov;
int vfslocked;
if (swap == NULL || blk_state == NULL)
return (-1);
@ -222,13 +219,11 @@ swap_file_write(struct chip_swap *swap, struct block_state *blk_state)
auio.uio_resid = swap->blk_size;
auio.uio_td = td;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
VOP_WRITE(vp, &auio, IO_UNIT, swap->swap_cred);
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (0);
}
@ -241,7 +236,6 @@ swap_file_read(struct chip_swap *swap, struct block_state *blk_state)
struct vnode *vp;
struct uio auio;
struct iovec aiov;
int vfslocked;
if (swap == NULL || blk_state == NULL)
return (-1);
@ -267,11 +261,9 @@ swap_file_read(struct chip_swap *swap, struct block_state *blk_state)
auio.uio_resid = swap->blk_size;
auio.uio_td = td;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
VOP_READ(vp, &auio, 0, swap->swap_cred);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
return (0);
}

14
sys/dev/xen/blkback/blkback.c
View File

@ -2250,7 +2250,6 @@ xbb_dispatch_file(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist,
void **p_vaddr;
int saved_uio_iovcnt;
#endif /* XBB_USE_BOUNCE_BUFFERS */
int vfs_is_locked;
int error;
file_data = &xbb->backend.file;
@ -2271,8 +2270,6 @@ xbb_dispatch_file(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist,
SDT_PROBE1(xbb, kernel, xbb_dispatch_file, flush,
device_get_unit(xbb->dev));
vfs_is_locked = VFS_LOCK_GIANT(xbb->vn->v_mount);
(void) vn_start_write(xbb->vn, &mountpoint, V_WAIT);
vn_lock(xbb->vn, LK_EXCLUSIVE | LK_RETRY);
@ -2281,8 +2278,6 @@ xbb_dispatch_file(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist,
vn_finished_write(mountpoint);
VFS_UNLOCK_GIANT(vfs_is_locked);
goto bailout_send_response;
/* NOTREACHED */
}
@ -2366,7 +2361,6 @@ xbb_dispatch_file(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist,
}
#endif /* XBB_USE_BOUNCE_BUFFERS */
vfs_is_locked = VFS_LOCK_GIANT(xbb->vn->v_mount);
switch (operation) {
case BIO_READ:
@ -2442,7 +2436,6 @@ xbb_dispatch_file(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist,
panic("invalid operation %d", operation);
/* NOTREACHED */
}
VFS_UNLOCK_GIANT(vfs_is_locked);
#ifdef XBB_USE_BOUNCE_BUFFERS
/* We only need to copy here for read operations */
@ -2489,7 +2482,6 @@ xbb_close_backend(struct xbb_softc *xbb)
DPRINTF("closing dev=%s\n", xbb->dev_name);
if (xbb->vn) {
int flags = FREAD;
int vfs_is_locked = 0;
if ((xbb->flags & XBBF_READ_ONLY) == 0)
flags |= FWRITE;
@ -2504,7 +2496,6 @@ xbb_close_backend(struct xbb_softc *xbb)
}
break;
case XBB_TYPE_FILE:
vfs_is_locked = VFS_LOCK_GIANT(xbb->vn->v_mount);
break;
case XBB_TYPE_NONE:
default:
@ -2519,7 +2510,6 @@ xbb_close_backend(struct xbb_softc *xbb)
case XBB_TYPE_DISK:
break;
case XBB_TYPE_FILE:
VFS_UNLOCK_GIANT(vfs_is_locked);
if (xbb->backend.file.cred != NULL) {
crfree(xbb->backend.file.cred);
xbb->backend.file.cred = NULL;
@ -2684,7 +2674,6 @@ xbb_open_backend(struct xbb_softc *xbb)
struct nameidata nd;
int flags;
int error;
int vfs_is_locked;
flags = FREAD;
error = 0;
@ -2744,8 +2733,6 @@ xbb_open_backend(struct xbb_softc *xbb)
return (error);
}
vfs_is_locked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
xbb->vn = nd.ni_vp;
@ -2761,7 +2748,6 @@ xbb_open_backend(struct xbb_softc *xbb)
"or file", xbb->dev_name);
}
VOP_UNLOCK(xbb->vn, 0);
VFS_UNLOCK_GIANT(vfs_is_locked);
if (error != 0) {
xbb_close_backend(xbb);

2
sys/fs/nfs/nfs_commonport.c
View File

@ -211,7 +211,7 @@ nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
{
int error;
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE, UIO_USERSPACE, fname,
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname,
p);
error = namei(ndp);
if (!error) {

10
sys/fs/nfsserver/nfs_nfsdport.c
View File

@ -2060,8 +2060,7 @@ nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram,
cn.cn_nameptr = dp->d_name;
cn.cn_namelen = nlen;
cn.cn_flags = ISLASTCN |
NOFOLLOW | LOCKLEAF |
MPSAFE;
NOFOLLOW | LOCKLEAF;
if (nlen == 2 &&
dp->d_name[0] == '.' &&
dp->d_name[1] == '.')
@ -2647,10 +2646,7 @@ nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam,
*credp = NULL;
exp->nes_numsecflavor = 0;
if (VFS_NEEDSGIANT(mp))
error = ESTALE;
else
error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp);
error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp);
if (error != 0)
/* Make sure the server replies ESTALE to the client. */
error = ESTALE;
@ -2825,7 +2821,7 @@ nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p)
/*
* If fspec != NULL, this is the v4root path.
*/
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
nfsexargp->fspec, p);
if ((error = namei(&nd)) != 0)
goto out;

4
sys/fs/procfs/procfs_map.c
View File

@ -84,7 +84,7 @@ procfs_doprocmap(PFS_FILL_ARGS)
struct vnode *vp;
char *fullpath, *freepath;
struct ucred *cred;
int error, vfslocked;
int error;
unsigned int last_timestamp;
#ifdef COMPAT_FREEBSD32
int wrap32 = 0;
@ -189,9 +189,7 @@ procfs_doprocmap(PFS_FILL_ARGS)
VM_OBJECT_UNLOCK(obj);
if (vp != NULL) {
vn_fullpath(td, vp, &fullpath, &freepath);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
} else {
type = "none";

13
sys/fs/unionfs/union_subr.c
View File

@ -331,7 +331,6 @@ unionfs_nodeget(struct mount *mp, struct vnode *uppervp,
void
unionfs_noderem(struct vnode *vp, struct thread *td)
{
int vfslocked;
int count;
struct unionfs_node *unp, *unp_t1, *unp_t2;
struct unionfs_node_hashhead *hd;
@ -366,20 +365,12 @@ unionfs_noderem(struct vnode *vp, struct thread *td)
if (lockmgr(vp->v_vnlock, LK_EXCLUSIVE, VI_MTX(vp)) != 0)
panic("the lock for deletion is unacquirable.");
if (lvp != NULLVP) {
vfslocked = VFS_LOCK_GIANT(lvp->v_mount);
if (lvp != NULLVP)
vrele(lvp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (uvp != NULLVP) {
vfslocked = VFS_LOCK_GIANT(uvp->v_mount);
if (uvp != NULLVP)
vrele(uvp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (dvp != NULLVP) {
vfslocked = VFS_LOCK_GIANT(dvp->v_mount);
vrele(dvp);
VFS_UNLOCK_GIANT(vfslocked);
unp->un_dvp = NULLVP;
}
if (unp->un_path != NULL) {

12
sys/geom/geom_vfs.c
View File

@ -35,7 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/vnode.h>
#include <sys/mount.h> /* XXX Temporary for VFS_LOCK_GIANT */
#include <sys/mount.h>
#include <geom/geom.h>
#include <geom/geom_vfs.h>
@ -94,7 +94,7 @@ g_vfs_done(struct bio *bip)
struct g_consumer *cp;
struct g_vfs_softc *sc;
struct buf *bp;
int vfslocked, destroy;
int destroy;
struct mount *mp;
struct vnode *vp;
struct cdev *cdevp;
@ -158,9 +158,7 @@ g_vfs_done(struct bio *bip)
if (destroy)
g_post_event(g_vfs_destroy, cp, M_WAITOK, NULL);
vfslocked = VFS_LOCK_GIANT(((struct mount *)NULL));
bufdone(bp);
VFS_UNLOCK_GIANT(vfslocked);
}
void
@ -169,7 +167,6 @@ g_vfs_strategy(struct bufobj *bo, struct buf *bp)
struct g_vfs_softc *sc;
struct g_consumer *cp;
struct bio *bip;
int vfslocked;
cp = bo->bo_private;
sc = cp->geom->softc;
@ -182,9 +179,7 @@ g_vfs_strategy(struct bufobj *bo, struct buf *bp)
mtx_unlock(&sc->sc_mtx);
bp->b_error = ENXIO;
bp->b_ioflags |= BIO_ERROR;
vfslocked = VFS_LOCK_GIANT(((struct mount *)NULL));
bufdone(bp);
VFS_UNLOCK_GIANT(vfslocked);
return;
}
sc->sc_active++;
@ -234,7 +229,6 @@ g_vfs_open(struct vnode *vp, struct g_consumer **cpp, const char *fsname, int wr
struct g_consumer *cp;
struct g_vfs_softc *sc;
struct bufobj *bo;
int vfslocked;
int error;
g_topology_assert();
@ -259,9 +253,7 @@ g_vfs_open(struct vnode *vp, struct g_consumer **cpp, const char *fsname, int wr
g_wither_geom(gp, ENXIO);
return (error);
}
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vnode_create_vobject(vp, pp->mediasize, curthread);
VFS_UNLOCK_GIANT(vfslocked);
*cpp = cp;
cp->private = vp;
bo->bo_ops = g_vfs_bufops;

10
sys/geom/journal/g_journal.c
View File

@ -2870,7 +2870,7 @@ g_journal_do_switch(struct g_class *classp)
struct mount *mp;
struct bintime bt;
char *mountpoint;
int error, save, vfslocked;
int error, save;
DROP_GIANT();
g_topology_lock();
@ -2922,11 +2922,8 @@ g_journal_do_switch(struct g_class *classp)
mountpoint = mp->mnt_stat.f_mntonname;
vfslocked = VFS_LOCK_GIANT(mp);
error = vn_start_write(NULL, &mp, V_WAIT);
if (error != 0) {
VFS_UNLOCK_GIANT(vfslocked);
GJ_DEBUG(0, "vn_start_write(%s) failed (error=%d).",
mountpoint, error);
goto next;
@ -2951,10 +2948,8 @@ g_journal_do_switch(struct g_class *classp)
vn_finished_write(mp);
if (error != 0) {
VFS_UNLOCK_GIANT(vfslocked);
if (error != 0)
goto next;
}
/*
* Send BIO_FLUSH before freezing the file system, so it can be
@ -2966,7 +2961,6 @@ g_journal_do_switch(struct g_class *classp)
GJ_TIMER_START(1, &bt);
error = vfs_write_suspend(mp);
VFS_UNLOCK_GIANT(vfslocked);
GJ_TIMER_STOP(1, &bt, "Suspend time of %s", mountpoint);
if (error != 0) {
GJ_DEBUG(0, "Cannot suspend file system %s (error=%d).",

10
sys/i386/ibcs2/ibcs2_misc.c
View File

@ -331,7 +331,7 @@ ibcs2_getdents(td, uap)
struct iovec aiov;
struct ibcs2_dirent idb;
off_t off; /* true file offset */
int buflen, error, eofflag, vfslocked;
int buflen, error, eofflag;
u_long *cookies = NULL, *cookiep;
int ncookies;
#define BSD_DIRENT(cp) ((struct dirent *)(cp))
@ -345,9 +345,7 @@ ibcs2_getdents(td, uap)
return (EBADF);
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) { /* XXX vnode readdir op should do this */
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return (EINVAL);
}
@ -464,7 +462,6 @@ ibcs2_getdents(td, uap)
td->td_retval[0] = uap->nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookies)
free(cookies, M_TEMP);
@ -490,7 +487,7 @@ ibcs2_read(td, uap)
char name[14];
} idb;
off_t off; /* true file offset */
int buflen, error, eofflag, size, vfslocked;
int buflen, error, eofflag, size;
u_long *cookies = NULL, *cookiep;
int ncookies;
@ -506,9 +503,7 @@ ibcs2_read(td, uap)
return (EBADF);
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) {
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return sys_read(td, (struct read_args *)uap);
}
@ -631,7 +626,6 @@ ibcs2_read(td, uap)
td->td_retval[0] = uap->nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookies)
free(cookies, M_TEMP);

8
sys/kern/imgact_elf.c
View File

@ -595,7 +595,7 @@ __elfN(load_file)(struct proc *p, const char *file, u_long *addr,
vm_prot_t prot;
u_long rbase;
u_long base_addr = 0;
int vfslocked, error, i, numsegs;
int error, i, numsegs;
#ifdef CAPABILITY_MODE
/*
@ -621,14 +621,11 @@ __elfN(load_file)(struct proc *p, const char *file, u_long *addr,
imgp->object = NULL;
imgp->execlabel = NULL;
NDINIT(nd, LOOKUP, MPSAFE|LOCKLEAF|FOLLOW, UIO_SYSSPACE, file,
curthread);
vfslocked = 0;
NDINIT(nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_SYSSPACE, file, curthread);
if ((error = namei(nd)) != 0) {
nd->ni_vp = NULL;
goto fail;
}
vfslocked = NDHASGIANT(nd);
NDFREE(nd, NDF_ONLY_PNBUF);
imgp->vp = nd->ni_vp;
@ -706,7 +703,6 @@ __elfN(load_file)(struct proc *p, const char *file, u_long *addr,
if (nd->ni_vp)
vput(nd->ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
free(tempdata, M_TEMP);
return (error);

27
sys/kern/kern_acct.c
View File

@ -196,7 +196,7 @@ int
sys_acct(struct thread *td, struct acct_args *uap)
{
struct nameidata nd;
int error, flags, vfslocked, replacing;
int error, flags, replacing;
error = priv_check(td, PRIV_ACCT);
if (error)
@ -207,30 +207,26 @@ sys_acct(struct thread *td, struct acct_args *uap)
* appending and make sure it's a 'normal'.
*/
if (uap->path != NULL) {
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE | AUDITVNODE1,
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1,
UIO_USERSPACE, uap->path, td);
flags = FWRITE | O_APPEND;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
#ifdef MAC
error = mac_system_check_acct(td->td_ucred, nd.ni_vp);
if (error) {
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, flags, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
#endif
VOP_UNLOCK(nd.ni_vp, 0);
if (nd.ni_vp->v_type != VREG) {
vn_close(nd.ni_vp, flags, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (EACCES);
}
VFS_UNLOCK_GIANT(vfslocked);
#ifdef MAC
} else {
error = mac_system_check_acct(td->td_ucred, NULL);
@ -259,11 +255,8 @@ sys_acct(struct thread *td, struct acct_args *uap)
* enabled.
*/
acct_suspended = 0;
if (acct_vp != NULL) {
vfslocked = VFS_LOCK_GIANT(acct_vp->v_mount);
if (acct_vp != NULL)
error = acct_disable(td, !replacing);
VFS_UNLOCK_GIANT(vfslocked);
}
if (uap->path == NULL) {
if (acct_state & ACCT_RUNNING) {
acct_state |= ACCT_EXITREQ;
@ -291,9 +284,7 @@ sys_acct(struct thread *td, struct acct_args *uap)
error = kproc_create(acct_thread, NULL, NULL, 0, 0,
"accounting");
if (error) {
vfslocked = VFS_LOCK_GIANT(acct_vp->v_mount);
(void) vn_close(acct_vp, acct_flags, acct_cred, td);
VFS_UNLOCK_GIANT(vfslocked);
crfree(acct_cred);
acct_configured = 0;
acct_vp = NULL;
@ -346,7 +337,7 @@ acct_process(struct thread *td)
struct plimit *newlim, *oldlim;
struct proc *p;
struct rusage ru;
int t, ret, vfslocked;
int t, ret;
/*
* Lockless check of accounting condition before doing the hard
@ -442,11 +433,9 @@ acct_process(struct thread *td)
/*
* Write the accounting information to the file.
*/
vfslocked = VFS_LOCK_GIANT(acct_vp->v_mount);
ret = vn_rdwr(UIO_WRITE, acct_vp, (caddr_t)&acct, sizeof (acct),
(off_t)0, UIO_SYSSPACE, IO_APPEND|IO_UNIT, acct_cred, NOCRED,
NULL, td);
VFS_UNLOCK_GIANT(vfslocked);
sx_sunlock(&acct_sx);
return (ret);
}
@ -563,7 +552,6 @@ static void
acctwatch(void)
{
struct statfs sb;
int vfslocked;
sx_assert(&acct_sx, SX_XLOCKED);
@ -581,10 +569,8 @@ acctwatch(void)
* If our vnode is no longer valid, tear it down and signal the
* accounting thread to die.
*/
vfslocked = VFS_LOCK_GIANT(acct_vp->v_mount);
if (acct_vp->v_type == VBAD) {
(void) acct_disable(NULL, 1);
VFS_UNLOCK_GIANT(vfslocked);
acct_state |= ACCT_EXITREQ;
return;
}
@ -593,11 +579,8 @@ acctwatch(void)
* Stopping here is better than continuing, maybe it will be VBAD
* next time around.
*/
if (VFS_STATFS(acct_vp->v_mount, &sb) < 0) {
VFS_UNLOCK_GIANT(vfslocked);
if (VFS_STATFS(acct_vp->v_mount, &sb) < 0)
return;
}
VFS_UNLOCK_GIANT(vfslocked);
if (acct_suspended) {
if (sb.f_bavail > (int64_t)(acctresume * sb.f_blocks /
100)) {

8
sys/kern/kern_alq.c
View File

@ -313,7 +313,6 @@ alq_doio(struct alq *alq)
struct iovec aiov[2];
int totlen;
int iov;
int vfslocked;
int wrapearly;
KASSERT((HAS_PENDING_DATA(alq)), ("%s: queue empty!", __func__));
@ -365,7 +364,6 @@ alq_doio(struct alq *alq)
/*
* Do all of the junk required to write now.
*/
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
/*
@ -377,7 +375,6 @@ alq_doio(struct alq *alq)
VOP_WRITE(vp, &auio, IO_UNIT | IO_APPEND, alq->aq_cred);
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
ALQ_LOCK(alq);
alq->aq_flags &= ~AQ_FLUSHING;
@ -438,25 +435,22 @@ alq_open_flags(struct alq **alqp, const char *file, struct ucred *cred, int cmod
struct alq *alq;
int oflags;
int error;
int vfslocked;
KASSERT((size > 0), ("%s: size <= 0", __func__));
*alqp = NULL;
td = curthread;
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, file, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, file, td);
oflags = FWRITE | O_NOFOLLOW | O_CREAT;
error = vn_open_cred(&nd, &oflags, cmode, 0, cred, NULL);
if (error)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
/* We just unlock so we hold a reference */
VOP_UNLOCK(nd.ni_vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
alq = malloc(sizeof(*alq), M_ALD, M_WAITOK|M_ZERO);
alq->aq_vp = nd.ni_vp;

5
sys/kern/kern_ctf.c
View File

@ -69,7 +69,6 @@ link_elf_ctf_get(linker_file_t lf, linker_ctf_t *lc)
int i;
int nbytes;
ssize_t resid;
int vfslocked;
size_t sz;
struct nameidata nd;
struct thread *td = curthread;
@ -114,12 +113,11 @@ link_elf_ctf_get(linker_file_t lf, linker_ctf_t *lc)
*/
ef->ctfcnt = -1;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, lf->pathname, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, lf->pathname, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
/* Allocate memory for the FLF header. */
@ -323,7 +321,6 @@ link_elf_ctf_get(linker_file_t lf, linker_ctf_t *lc)
out:
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
if (hdr != NULL)
free(hdr, M_LINKER);

61
sys/kern/kern_descrip.c
View File

@ -463,12 +463,10 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
char *pop;
struct vnode *vp;
int error, flg, tmp;
int vfslocked;
u_int old, new;
uint64_t bsize;
off_t foffset;
vfslocked = 0;
error = 0;
flg = F_POSIX;
p = td->td_proc;
@ -637,7 +635,6 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
fhold(fp);
FILEDESC_SUNLOCK(fdp);
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
switch (flp->l_type) {
case F_RDLCK:
if ((fp->f_flag & FREAD) == 0) {
@ -681,8 +678,6 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
error = EINVAL;
break;
}
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
if (error != 0 || flp->l_type == F_UNLCK ||
flp->l_type == F_UNLCKSYS) {
fdrop(fp, td);
@ -712,11 +707,8 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
flp->l_start = 0;
flp->l_len = 0;
flp->l_type = F_UNLCK;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
(void) VOP_ADVLOCK(vp, (caddr_t)p->p_leader,
F_UNLCK, flp, F_POSIX);
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
} else
FILEDESC_SUNLOCK(fdp);
fdrop(fp, td);
@ -759,11 +751,8 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
fhold(fp);
FILEDESC_SUNLOCK(fdp);
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = VOP_ADVLOCK(vp, (caddr_t)p->p_leader, F_GETLK, flp,
F_POSIX);
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
fdrop(fp, td);
break;
@ -786,7 +775,6 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
FILEDESC_SUNLOCK(fdp);
if (arg != 0) {
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_lock(vp, LK_SHARED);
if (error != 0)
goto readahead_vnlock_fail;
@ -797,9 +785,7 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
new = old = fp->f_flag;
new |= FRDAHEAD;
} while (!atomic_cmpset_rel_int(&fp->f_flag, old, new));
readahead_vnlock_fail:
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
readahead_vnlock_fail:;
} else {
do {
new = old = fp->f_flag;
@ -813,7 +799,6 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
error = EINVAL;
break;
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1404,13 +1389,9 @@ sys_fpathconf(struct thread *td, struct fpathconf_args *uap)
}
vp = fp->f_vnode;
if (vp != NULL) {
int vfslocked;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_PATHCONF(vp, uap->name, td->td_retval);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
} else if (fp->f_type == DTYPE_PIPE || fp->f_type == DTYPE_SOCKET) {
if (uap->name != _PC_PIPE_BUF) {
error = EINVAL;
@ -1831,7 +1812,7 @@ void
fdfree(struct thread *td)
{
struct filedesc *fdp;
int i, locked;
int i;
struct filedesc_to_leader *fdtol;
struct file *fp;
struct vnode *cdir, *jdir, *rdir, *vp;
@ -1868,11 +1849,9 @@ fdfree(struct thread *td)
lf.l_len = 0;
lf.l_type = F_UNLCK;
vp = fp->f_vnode;
locked = VFS_LOCK_GIANT(vp->v_mount);
(void) VOP_ADVLOCK(vp,
(caddr_t)td->td_proc->p_leader, F_UNLCK,
&lf, F_POSIX);
VFS_UNLOCK_GIANT(locked);
FILEDESC_XLOCK(fdp);
fdrop(fp, td);
}
@ -1950,21 +1929,12 @@ fdfree(struct thread *td)
fdp->fd_jdir = NULL;
FILEDESC_XUNLOCK(fdp);
if (cdir) {
locked = VFS_LOCK_GIANT(cdir->v_mount);
if (cdir)
vrele(cdir);
VFS_UNLOCK_GIANT(locked);
}
if (rdir) {
locked = VFS_LOCK_GIANT(rdir->v_mount);
if (rdir)
vrele(rdir);
VFS_UNLOCK_GIANT(locked);
}
if (jdir) {
locked = VFS_LOCK_GIANT(jdir->v_mount);
if (jdir)
vrele(jdir);
VFS_UNLOCK_GIANT(locked);
}
fddrop(fdp);
}
@ -2163,10 +2133,7 @@ closef(struct file *fp, struct thread *td)
*/
(void)cap_funwrap(fp, 0, &fp_object);
if (fp_object->f_type == DTYPE_VNODE && td != NULL) {
int vfslocked;
vp = fp_object->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if ((td->td_proc->p_leader->p_flag & P_ADVLOCK) != 0) {
lf.l_whence = SEEK_SET;
lf.l_start = 0;
@ -2209,7 +2176,6 @@ closef(struct file *fp, struct thread *td)
}
FILEDESC_XUNLOCK(fdp);
}
VFS_UNLOCK_GIANT(vfslocked);
}
return (fdrop(fp, td));
}
@ -2593,7 +2559,6 @@ sys_flock(struct thread *td, struct flock_args *uap)
struct file *fp;
struct vnode *vp;
struct flock lf;
int vfslocked;
int error;
if ((error = fget(td, uap->fd, CAP_FLOCK, &fp)) != 0)
@ -2604,7 +2569,6 @@ sys_flock(struct thread *td, struct flock_args *uap)
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
lf.l_whence = SEEK_SET;
lf.l_start = 0;
lf.l_len = 0;
@ -2627,7 +2591,6 @@ sys_flock(struct thread *td, struct flock_args *uap)
(uap->how & LOCK_NB) ? F_FLOCK : F_FLOCK | F_WAIT);
done2:
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
/*
@ -2883,7 +2846,6 @@ export_vnode_for_osysctl(struct vnode *vp, int type,
{
int error;
char *fullpath, *freepath;
int vfslocked;
bzero(kif, sizeof(*kif));
kif->kf_structsize = sizeof(*kif);
@ -2909,9 +2871,7 @@ export_vnode_for_osysctl(struct vnode *vp, int type,
fullpath = "-";
FILEDESC_SUNLOCK(fdp);
vn_fullpath(curthread, vp, &fullpath, &freepath);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
strlcpy(kif->kf_path, fullpath, sizeof(kif->kf_path));
if (freepath != NULL)
free(freepath, M_TEMP);
@ -2936,7 +2896,6 @@ sysctl_kern_proc_ofiledesc(SYSCTL_HANDLER_ARGS)
struct file *fp;
struct proc *p;
struct tty *tp;
int vfslocked;
name = (int *)arg1;
if ((p = pfind((pid_t)name[0])) == NULL)
@ -3103,9 +3062,7 @@ sysctl_kern_proc_ofiledesc(SYSCTL_HANDLER_ARGS)
fullpath = "-";
FILEDESC_SUNLOCK(fdp);
vn_fullpath(curthread, vp, &fullpath, &freepath);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
strlcpy(kif->kf_path, fullpath,
sizeof(kif->kf_path));
if (freepath != NULL)
@ -3181,7 +3138,7 @@ export_fd_for_sysctl(void *data, int type, int fd, int fflags, int refcnt,
};
#define NFFLAGS (sizeof(fflags_table) / sizeof(*fflags_table))
struct vnode *vp;
int error, vfslocked;
int error;
unsigned int i;
bzero(kif, sizeof(*kif));
@ -3190,9 +3147,7 @@ export_fd_for_sysctl(void *data, int type, int fd, int fflags, int refcnt,
case KF_TYPE_VNODE:
vp = (struct vnode *)data;
error = fill_vnode_info(vp, kif);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
break;
case KF_TYPE_SOCKET:
error = fill_socket_info((struct socket *)data, kif);
@ -3477,7 +3432,7 @@ fill_vnode_info(struct vnode *vp, struct kinfo_file *kif)
{
struct vattr va;
char *fullpath, *freepath;
int error, vfslocked;
int error;
if (vp == NULL)
return (1);
@ -3496,11 +3451,9 @@ fill_vnode_info(struct vnode *vp, struct kinfo_file *kif)
*/
va.va_fsid = VNOVAL;
va.va_rdev = NODEV;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(vp, &va, curthread->td_ucred);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
if (error != 0)
return (error);
if (va.va_fsid != VNOVAL)

25
sys/kern/kern_exec.c
View File

@ -341,7 +341,6 @@ do_execve(td, args, mac_p)
#endif
struct vnode *textvp = NULL, *binvp = NULL;
int credential_changing;
int vfslocked;
int textset;
#ifdef MAC
struct label *interpvplabel = NULL;
@ -352,7 +351,6 @@ do_execve(td, args, mac_p)
#endif
static const char fexecv_proc_title[] = "(fexecv)";
vfslocked = 0;
imgp = &image_params;
/*
@ -412,7 +410,7 @@ do_execve(td, args, mac_p)
*/
if (args->fname != NULL) {
NDINIT(&nd, LOOKUP, ISOPEN | LOCKLEAF | FOLLOW | SAVENAME
| MPSAFE | AUDITVNODE1, UIO_SYSSPACE, args->fname, td);
| AUDITVNODE1, UIO_SYSSPACE, args->fname, td);
}
SDT_PROBE(proc, kernel, , exec, args->fname, 0, 0, 0, 0 );
@ -435,7 +433,6 @@ do_execve(td, args, mac_p)
if (error)
goto exec_fail;
vfslocked = NDHASGIANT(&nd);
binvp = nd.ni_vp;
imgp->vp = binvp;
} else {
@ -449,7 +446,6 @@ do_execve(td, args, mac_p)
error = fgetvp_exec(td, args->fd, CAP_FEXECVE, &binvp);
if (error)
goto exec_fail;
vfslocked = VFS_LOCK_GIANT(binvp->v_mount);
vn_lock(binvp, LK_EXCLUSIVE | LK_RETRY);
AUDIT_ARG_VNODE1(binvp);
imgp->vp = binvp;
@ -538,10 +534,8 @@ do_execve(td, args, mac_p)
vput(binvp);
vm_object_deallocate(imgp->object);
imgp->object = NULL;
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
/* set new name to that of the interpreter */
NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW | SAVENAME | MPSAFE,
NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW | SAVENAME,
UIO_SYSSPACE, imgp->interpreter_name, td);
args->fname = imgp->interpreter_name;
goto interpret;
@ -844,23 +838,13 @@ do_execve(td, args, mac_p)
/*
* Handle deferred decrement of ref counts.
*/
if (textvp != NULL) {
int tvfslocked;
tvfslocked = VFS_LOCK_GIANT(textvp->v_mount);
if (textvp != NULL)
vrele(textvp);
VFS_UNLOCK_GIANT(tvfslocked);
}
if (binvp && error != 0)
vrele(binvp);
#ifdef KTRACE
if (tracevp != NULL) {
int tvfslocked;
tvfslocked = VFS_LOCK_GIANT(tracevp->v_mount);
if (tracevp != NULL)
vrele(tracevp);
VFS_UNLOCK_GIANT(tvfslocked);
}
if (tracecred != NULL)
crfree(tracecred);
#endif
@ -917,7 +901,6 @@ do_execve(td, args, mac_p)
mac_execve_exit(imgp);
mac_execve_interpreter_exit(interpvplabel);
#endif
VFS_UNLOCK_GIANT(vfslocked);
exec_free_args(args);
if (error && imgp->vmspace_destroyed) {

3
sys/kern/kern_exit.c
View File

@ -135,7 +135,6 @@ exit1(struct thread *td, int rv)
struct vnode *vtmp;
struct vnode *ttyvp = NULL;
struct plimit *plim;
int locked;
mtx_assert(&Giant, MA_NOTOWNED);
@ -383,9 +382,7 @@ exit1(struct thread *td, int rv)
*/
if ((vtmp = p->p_textvp) != NULL) {
p->p_textvp = NULL;
locked = VFS_LOCK_GIANT(vtmp->v_mount);
vrele(vtmp);
VFS_UNLOCK_GIANT(locked);
}
/*

6
sys/kern/kern_gzio.c
View File

@ -219,7 +219,6 @@ int ZEXPORT gzwrite (file, buf, len)
off_t curoff;
size_t resid;
int error;
int vfslocked;
if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
@ -232,11 +231,9 @@ int ZEXPORT gzwrite (file, buf, len)
if (s->stream.avail_out == 0) {
s->stream.next_out = s->outbuf;
vfslocked = VFS_LOCK_GIANT(s->file->v_mount);
error = vn_rdwr_inchunks(UIO_WRITE, s->file, s->outbuf, Z_BUFSIZE,
curoff, UIO_SYSSPACE, IO_UNIT,
curproc->p_ucred, NOCRED, &resid, curthread);
VFS_UNLOCK_GIANT(vfslocked);
if (error) {
log(LOG_ERR, "gzwrite: vn_rdwr return %d\n", error);
curoff += Z_BUFSIZE - resid;
@ -274,7 +271,6 @@ local int do_flush (file, flush)
gz_stream *s = (gz_stream*)file;
off_t curoff = s->outoff;
size_t resid;
int vfslocked = 0;
int error;
if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
@ -289,11 +285,9 @@ local int do_flush (file, flush)
len = Z_BUFSIZE - s->stream.avail_out;
if (len != 0) {
vfslocked = VFS_LOCK_GIANT(s->file->v_mount);
error = vn_rdwr_inchunks(UIO_WRITE, s->file, s->outbuf, len, curoff,
UIO_SYSSPACE, IO_UNIT, curproc->p_ucred,
NOCRED, &resid, curthread);
VFS_UNLOCK_GIANT(vfslocked);
if (error) {
s->z_err = Z_ERRNO;
s->outoff = curoff + len - resid;

27
sys/kern/kern_jail.c
View File

@ -543,7 +543,7 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
int created, cuflags, descend, enforce, error, errmsg_len, errmsg_pos;
int gotchildmax, gotenforce, gothid, gotrsnum, gotslevel;
int fi, jid, jsys, len, level;
int childmax, rsnum, slevel, vfslocked;
int childmax, rsnum, slevel;
int fullpath_disabled;
#if defined(INET) || defined(INET6)
int ii, ij;
@ -921,12 +921,11 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
error = EINVAL;
goto done_free;
}
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE, UIO_SYSSPACE,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
path, td);
error = namei(&nd);
if (error)
goto done_free;
vfslocked = NDHASGIANT(&nd);
root = nd.ni_vp;
NDFREE(&nd, NDF_ONLY_PNBUF);
g_path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
@ -941,17 +940,14 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
path = NULL;
} else {
/* exit on other errors */
VFS_UNLOCK_GIANT(vfslocked);
goto done_free;
}
if (root->v_type != VDIR) {
error = ENOTDIR;
vput(root);
VFS_UNLOCK_GIANT(vfslocked);
goto done_free;
}
VOP_UNLOCK(root, 0);
VFS_UNLOCK_GIANT(vfslocked);
if (fullpath_disabled) {
/* Leave room for a real-root full pathname. */
if (len + (path[0] == '/' && strcmp(mypr->pr_path, "/")
@ -1852,11 +1848,8 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
done_unlock_list:
sx_xunlock(&allprison_lock);
done_releroot:
if (root != NULL) {
vfslocked = VFS_LOCK_GIANT(root->v_mount);
if (root != NULL)
vrele(root);
VFS_UNLOCK_GIANT(vfslocked);
}
done_errmsg:
if (error) {
vfs_getopt(opts, "errmsg", (void **)&errmsg, &errmsg_len);
@ -2337,7 +2330,7 @@ do_jail_attach(struct thread *td, struct prison *pr)
struct prison *ppr;
struct proc *p;
struct ucred *newcred, *oldcred;
int vfslocked, error;
int error;
/*
* XXX: Note that there is a slight race here if two threads
@ -2368,7 +2361,6 @@ do_jail_attach(struct thread *td, struct prison *pr)
if (error)
goto e_revert_osd;
vfslocked = VFS_LOCK_GIANT(pr->pr_root->v_mount);
vn_lock(pr->pr_root, LK_EXCLUSIVE | LK_RETRY);
if ((error = change_dir(pr->pr_root, td)) != 0)
goto e_unlock;
@ -2378,8 +2370,7 @@ do_jail_attach(struct thread *td, struct prison *pr)
#endif
VOP_UNLOCK(pr->pr_root, 0);
if ((error = change_root(pr->pr_root, td)))
goto e_unlock_giant;
VFS_UNLOCK_GIANT(vfslocked);
goto e_revert_osd;
newcred = crget();
PROC_LOCK(p);
@ -2397,8 +2388,6 @@ do_jail_attach(struct thread *td, struct prison *pr)
return (0);
e_unlock:
VOP_UNLOCK(pr->pr_root, 0);
e_unlock_giant:
VFS_UNLOCK_GIANT(vfslocked);
e_revert_osd:
/* Tell modules this thread is still in its old jail after all. */
(void)osd_jail_call(ppr, PR_METHOD_ATTACH, td);
@ -2547,7 +2536,6 @@ static void
prison_deref(struct prison *pr, int flags)
{
struct prison *ppr, *tpr;
int vfslocked;
if (!(flags & PD_LOCKED))
mtx_lock(&pr->pr_mtx);
@ -2588,11 +2576,8 @@ prison_deref(struct prison *pr, int flags)
if (pr->pr_vnet != ppr->pr_vnet)
vnet_destroy(pr->pr_vnet);
#endif
if (pr->pr_root != NULL) {
vfslocked = VFS_LOCK_GIANT(pr->pr_root->v_mount);
if (pr->pr_root != NULL)
vrele(pr->pr_root);
VFS_UNLOCK_GIANT(vfslocked);
}
mtx_destroy(&pr->pr_mtx);
#ifdef INET
free(pr->pr_ip4, M_PRISON);

35
sys/kern/kern_ktrace.c
View File

@ -512,7 +512,6 @@ ktrprocexit(struct thread *td)
struct proc *p;
struct ucred *cred;
struct vnode *vp;
int vfslocked;
p = td->td_proc;
if (p->p_traceflag == 0)
@ -530,11 +529,8 @@ ktrprocexit(struct thread *td)
ktr_freeproc(p, &cred, &vp);
mtx_unlock(&ktrace_mtx);
PROC_UNLOCK(p);
if (vp != NULL) {
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp != NULL)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (cred != NULL)
crfree(cred);
ktrace_exit(td);
@ -862,7 +858,7 @@ sys_ktrace(td, uap)
int ops = KTROP(uap->ops);
int descend = uap->ops & KTRFLAG_DESCEND;
int nfound, ret = 0;
int flags, error = 0, vfslocked;
int flags, error = 0;
struct nameidata nd;
struct ucred *cred;
@ -877,25 +873,21 @@ sys_ktrace(td, uap)
/*
* an operation which requires a file argument.
*/
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_USERSPACE,
uap->fname, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->fname, td);
flags = FREAD | FWRITE | O_NOFOLLOW;
error = vn_open(&nd, &flags, 0, NULL);
if (error) {
ktrace_exit(td);
return (error);
}
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
vp = nd.ni_vp;
VOP_UNLOCK(vp, 0);
if (vp->v_type != VREG) {
(void) vn_close(vp, FREAD|FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
ktrace_exit(td);
return (EACCES);
}
VFS_UNLOCK_GIANT(vfslocked);
}
/*
* Clear all uses of the tracefile.
@ -921,10 +913,8 @@ sys_ktrace(td, uap)
}
sx_sunlock(&allproc_lock);
if (vrele_count > 0) {
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
while (vrele_count-- > 0)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
goto done;
}
@ -990,11 +980,8 @@ sys_ktrace(td, uap)
if (!ret)
error = EPERM;
done:
if (vp != NULL) {
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp != NULL)
(void) vn_close(vp, FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
}
ktrace_exit(td);
return (error);
#else /* !KTRACE */
@ -1086,13 +1073,8 @@ ktrops(td, p, ops, facs, vp)
if ((p->p_traceflag & KTRFAC_MASK) != 0)
ktrprocctor_entered(td, p);
PROC_UNLOCK(p);
if (tracevp != NULL) {
int vfslocked;
vfslocked = VFS_LOCK_GIANT(tracevp->v_mount);
if (tracevp != NULL)
vrele(tracevp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (tracecred != NULL)
crfree(tracecred);
@ -1146,7 +1128,7 @@ ktr_writerequest(struct thread *td, struct ktr_request *req)
struct iovec aiov[3];
struct mount *mp;
int datalen, buflen, vrele_count;
int error, vfslocked;
int error;
/*
* We hold the vnode and credential for use in I/O in case ktrace is
@ -1204,7 +1186,6 @@ ktr_writerequest(struct thread *td, struct ktr_request *req)
auio.uio_iovcnt++;
}
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
#ifdef MAC
@ -1217,10 +1198,8 @@ ktr_writerequest(struct thread *td, struct ktr_request *req)
crfree(cred);
if (!error) {
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
return;
}
VFS_UNLOCK_GIANT(vfslocked);
/*
* If error encountered, give up tracing on this vnode. We defer
@ -1259,10 +1238,8 @@ ktr_writerequest(struct thread *td, struct ktr_request *req)
}
sx_sunlock(&allproc_lock);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
while (vrele_count-- > 0)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
/*

12
sys/kern/kern_linker.c
View File

@ -1705,7 +1705,7 @@ linker_lookup_file(const char *path, int pathlen, const char *name,
struct nameidata nd;
struct thread *td = curthread; /* XXX */
char *result, **cpp, *sep;
int error, len, extlen, reclen, flags, vfslocked;
int error, len, extlen, reclen, flags;
enum vtype type;
extlen = 0;
@ -1726,18 +1726,16 @@ linker_lookup_file(const char *path, int pathlen, const char *name,
* Attempt to open the file, and return the path if
* we succeed and it's a regular file.
*/
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, result, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, result, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error == 0) {
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
type = nd.ni_vp->v_type;
if (vap)
VOP_GETATTR(nd.ni_vp, vap, td->td_ucred);
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
if (type == VREG)
return (result);
}
@ -1766,7 +1764,6 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
u_char *cp, *recptr, *bufend, *result, *best, *pathbuf, *sep;
int error, ival, bestver, *intp, found, flags, clen, blen;
ssize_t reclen;
int vfslocked = 0;
result = NULL;
bestver = found = 0;
@ -1778,12 +1775,11 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
snprintf(pathbuf, reclen, "%.*s%s%s", pathlen, path, sep,
linker_hintfile);
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, pathbuf, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, pathbuf, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
goto bad;
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_vp->v_type != VREG)
goto bad;
@ -1807,7 +1803,6 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
goto bad;
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, cred, td);
VFS_UNLOCK_GIANT(vfslocked);
nd.ni_vp = NULL;
if (reclen != 0) {
printf("can't read %zd\n", reclen);
@ -1876,7 +1871,6 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
if (nd.ni_vp != NULL) {
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, cred, td);
VFS_UNLOCK_GIANT(vfslocked);
}
/*
* If nothing found or hints is absent - fallback to the old

11
sys/kern/kern_proc.c
View File

@ -1873,7 +1873,7 @@ sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
struct proc *p;
struct vnode *vp;
char *retbuf, *freebuf;
int error, vfslocked;
int error;
if (arglen != 1)
return (EINVAL);
@ -1895,9 +1895,7 @@ sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
if (*pidp != -1)
PROC_UNLOCK(p);
error = vn_fullpath(req->td, vp, &retbuf, &freebuf);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
if (error)
return (error);
error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1);
@ -1964,7 +1962,6 @@ sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
entry = entry->next) {
vm_object_t obj, tobj, lobj;
vm_offset_t addr;
int vfslocked;
if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
continue;
@ -2061,14 +2058,12 @@ sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
vn_fullpath(curthread, vp, &fullpath,
&freepath);
cred = curthread->td_ucred;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
if (VOP_GETATTR(vp, &va, cred) == 0) {
kve->kve_fileid = va.va_fileid;
kve->kve_fsid = va.va_fsid;
}
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
} else {
kve->kve_type = KVME_TYPE_NONE;
@ -2134,7 +2129,7 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
vm_object_t obj, tobj, lobj;
vm_offset_t addr;
vm_paddr_t locked_pa;
int vfslocked, mincoreinfo;
int mincoreinfo;
if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
continue;
@ -2239,7 +2234,6 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
&freepath);
kve->kve_vn_type = vntype_to_kinfo(vp->v_type);
cred = curthread->td_ucred;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
if (VOP_GETATTR(vp, &va, cred) == 0) {
kve->kve_vn_fileid = va.va_fileid;
@ -2251,7 +2245,6 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
kve->kve_status = KF_ATTR_VALID;
}
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
} else {
kve->kve_type = KVME_TYPE_NONE;

11
sys/kern/kern_sig.c
View File

@ -3123,11 +3123,10 @@ expand_name(const char *name, uid_t uid, pid_t pid, struct thread *td,
int error, n;
int flags = O_CREAT | O_EXCL | FWRITE | O_NOFOLLOW;
int cmode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
int vfslocked;
for (n = 0; n < num_cores; n++) {
temp[indexpos] = '0' + n;
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE,
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE,
temp, td);
error = vn_open(&nd, &flags, cmode, NULL);
if (error) {
@ -3141,11 +3140,9 @@ expand_name(const char *name, uid_t uid, pid_t pid, struct thread *td,
free(temp, M_TEMP);
return (NULL);
}
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
VOP_UNLOCK(nd.ni_vp, 0);
error = vn_close(nd.ni_vp, FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
if (error) {
log(LOG_ERR,
"pid %d (%s), uid (%u): Path `%s' failed "
@ -3182,7 +3179,6 @@ coredump(struct thread *td)
struct mount *mp;
char *name; /* name of corefile */
off_t limit;
int vfslocked;
int compress;
#ifdef COMPRESS_USER_CORES
@ -3232,7 +3228,7 @@ coredump(struct thread *td)
PROC_UNLOCK(p);
restart:
NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE, UIO_SYSSPACE, name, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, name, td);
flags = O_CREAT | FWRITE | O_NOFOLLOW;
error = vn_open_cred(&nd, &flags, S_IRUSR | S_IWUSR, VN_OPEN_NOAUDIT,
cred, NULL);
@ -3243,7 +3239,6 @@ coredump(struct thread *td)
free(name, M_TEMP);
return (error);
}
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
vp = nd.ni_vp;
@ -3270,7 +3265,6 @@ coredump(struct thread *td)
goto out;
if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
goto out;
VFS_UNLOCK_GIANT(vfslocked);
goto restart;
}
@ -3303,7 +3297,6 @@ coredump(struct thread *td)
audit_proc_coredump(td, name, error);
#endif
free(name, M_TEMP);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

5
sys/kern/link_elf.c
View File

@ -750,17 +750,15 @@ link_elf_load_file(linker_class_t cls, const char* filename,
int symstrindex;
int symcnt;
int strcnt;
int vfslocked;
shdr = NULL;
lf = NULL;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, filename, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, filename, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error != 0)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_vp->v_type != VREG) {
error = ENOEXEC;
@ -1047,7 +1045,6 @@ link_elf_load_file(linker_class_t cls, const char* filename,
out:
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
if (error != 0 && lf != NULL)
linker_file_unload(lf, LINKER_UNLOAD_FORCE);
if (shdr != NULL)

5
sys/kern/link_elf_obj.c
View File

@ -450,19 +450,17 @@ link_elf_load_file(linker_class_t cls, const char *filename,
int nsym;
int pb, rl, ra;
int alignmask;
int vfslocked;
shdr = NULL;
lf = NULL;
mapsize = 0;
hdr = NULL;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, filename, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, filename, td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
return error;
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_vp->v_type != VREG) {
error = ENOEXEC;
@ -866,7 +864,6 @@ link_elf_load_file(linker_class_t cls, const char *filename,
out:
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
if (error && lf)
linker_file_unload(lf, LINKER_UNLOAD_FORCE);
if (hdr)

4
sys/kern/sys_process.c
View File

@ -335,7 +335,7 @@ ptrace_vm_entry(struct thread *td, struct proc *p, struct ptrace_vm_entry *pve)
struct vnode *vp;
char *freepath, *fullpath;
u_int pathlen;
int error, index, vfslocked;
int error, index;
error = 0;
obj = NULL;
@ -412,14 +412,12 @@ ptrace_vm_entry(struct thread *td, struct proc *p, struct ptrace_vm_entry *pve)
freepath = NULL;
fullpath = NULL;
vn_fullpath(td, vp, &fullpath, &freepath);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
if (VOP_GETATTR(vp, &vattr, td->td_ucred) == 0) {
pve->pve_fileid = vattr.va_fileid;
pve->pve_fsid = vattr.va_fsid;
}
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
if (fullpath != NULL) {
pve->pve_pathlen = strlen(fullpath) + 1;

10
sys/kern/uipc_syscalls.c
View File

@ -1834,7 +1834,6 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
struct vm_page *pg;
off_t off, xfsize, fsbytes = 0, sbytes = 0, rem = 0;
int error, hdrlen = 0, mnw = 0;
int vfslocked;
struct sendfile_sync *sfs = NULL;
/*
@ -1846,7 +1845,6 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
AUDIT_ARG_FD(uap->fd);
if ((error = fgetvp_read(td, uap->fd, CAP_READ, &vp)) != 0)
goto out;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
if (vp->v_type == VREG) {
obj = vp->v_object;
@ -1868,7 +1866,6 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
}
}
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
if (obj == NULL) {
error = EINVAL;
goto out;
@ -2098,7 +2095,6 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
/*
* Get the page from backing store.
*/
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_lock(vp, LK_SHARED);
if (error != 0)
goto after_read;
@ -2116,7 +2112,6 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
td->td_ucred, NOCRED, &resid, td);
VOP_UNLOCK(vp, 0);
after_read:
VFS_UNLOCK_GIANT(vfslocked);
VM_OBJECT_LOCK(obj);
vm_page_io_finish(pg);
if (!error)
@ -2270,11 +2265,8 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
}
if (obj != NULL)
vm_object_deallocate(obj);
if (vp != NULL) {
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp != NULL)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (so)
fdrop(sock_fp, td);
if (m)

29
sys/kern/uipc_usrreq.c
View File

@ -454,7 +454,7 @@ uipc_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
{
struct sockaddr_un *soun = (struct sockaddr_un *)nam;
struct vattr vattr;
int error, namelen, vfslocked;
int error, namelen;
struct nameidata nd;
struct unpcb *unp;
struct vnode *vp;
@ -496,15 +496,13 @@ uipc_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
buf[namelen] = 0;
restart:
vfslocked = 0;
NDINIT(&nd, CREATE, MPSAFE | NOFOLLOW | LOCKPARENT | SAVENAME,
NDINIT(&nd, CREATE, NOFOLLOW | LOCKPARENT | SAVENAME,
UIO_SYSSPACE, buf, td);
/* SHOULD BE ABLE TO ADOPT EXISTING AND wakeup() ALA FIFO's */
error = namei(&nd);
if (error)
goto error;
vp = nd.ni_vp;
vfslocked = NDHASGIANT(&nd);
if (vp != NULL || vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_dvp == vp)
@ -519,7 +517,6 @@ uipc_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH);
if (error)
goto error;
VFS_UNLOCK_GIANT(vfslocked);
goto restart;
}
VATTR_NULL(&vattr);
@ -551,12 +548,10 @@ uipc_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
UNP_LINK_WUNLOCK();
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
free(buf, M_TEMP);
return (0);
error:
VFS_UNLOCK_GIANT(vfslocked);
UNP_PCB_LOCK(unp);
unp->unp_flags &= ~UNP_BINDING;
UNP_PCB_UNLOCK(unp);
@ -674,13 +669,8 @@ uipc_detach(struct socket *so)
uma_zfree(unp_zone, unp);
} else
UNP_PCB_UNLOCK(unp);
if (vp) {
int vfslocked;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
}
if (local_unp_rights)
taskqueue_enqueue(taskqueue_thread, &unp_gc_task);
}
@ -1246,7 +1236,7 @@ unp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
struct vnode *vp;
struct socket *so2, *so3;
struct unpcb *unp, *unp2, *unp3;
int error, len, vfslocked;
int error, len;
struct nameidata nd;
char buf[SOCK_MAXADDRLEN];
struct sockaddr *sa;
@ -1274,7 +1264,7 @@ unp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
UNP_PCB_UNLOCK(unp);
sa = malloc(sizeof(struct sockaddr_un), M_SONAME, M_WAITOK);
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | LOCKSHARED | LOCKLEAF,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF,
UIO_SYSSPACE, buf, td);
error = namei(&nd);
if (error)
@ -1282,7 +1272,6 @@ unp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
else
vp = nd.ni_vp;
ASSERT_VOP_LOCKED(vp, "unp_connect");
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
if (error)
goto bad;
@ -1299,7 +1288,6 @@ unp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
error = VOP_ACCESS(vp, VWRITE, td->td_ucred, td);
if (error)
goto bad;
VFS_UNLOCK_GIANT(vfslocked);
unp = sotounpcb(so);
KASSERT(unp != NULL, ("unp_connect: unp == NULL"));
@ -1382,16 +1370,9 @@ unp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
UNP_PCB_UNLOCK(unp);
bad2:
UNP_LINK_WUNLOCK();
if (vfslocked)
/*
* Giant has been previously acquired. This means filesystem
* isn't MPSAFE. Do it once again.
*/
mtx_lock(&Giant);
bad:
if (vp != NULL)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
free(sa, M_SONAME);
UNP_LINK_WLOCK();
UNP_PCB_LOCK(unp);

64
sys/kern/vfs_acl.c
View File

@ -327,16 +327,14 @@ int
sys___acl_get_file(struct thread *td, struct __acl_get_file_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|FOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_get_acl(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -347,16 +345,14 @@ int
sys___acl_get_link(struct thread *td, struct __acl_get_link_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|NOFOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_get_acl(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -367,16 +363,14 @@ int
sys___acl_set_file(struct thread *td, struct __acl_set_file_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|FOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_set_acl(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -387,16 +381,14 @@ int
sys___acl_set_link(struct thread *td, struct __acl_set_link_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|NOFOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_set_acl(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -407,14 +399,12 @@ int
sys___acl_get_fd(struct thread *td, struct __acl_get_fd_args *uap)
{
struct file *fp;
int vfslocked, error;
int error;
error = getvnode(td->td_proc->p_fd, uap->filedes, CAP_ACL_GET, &fp);
if (error == 0) {
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = vacl_get_acl(td, fp->f_vnode, uap->type, uap->aclp);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
}
return (error);
}
@ -426,14 +416,12 @@ int
sys___acl_set_fd(struct thread *td, struct __acl_set_fd_args *uap)
{
struct file *fp;
int vfslocked, error;
int error;
error = getvnode(td->td_proc->p_fd, uap->filedes, CAP_ACL_SET, &fp);
if (error == 0) {
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = vacl_set_acl(td, fp->f_vnode, uap->type, uap->aclp);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
}
return (error);
}
@ -445,16 +433,14 @@ int
sys___acl_delete_file(struct thread *td, struct __acl_delete_file_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|FOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_delete(td, nd.ni_vp, uap->type);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -465,16 +451,14 @@ int
sys___acl_delete_link(struct thread *td, struct __acl_delete_link_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|NOFOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_delete(td, nd.ni_vp, uap->type);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -485,15 +469,13 @@ int
sys___acl_delete_fd(struct thread *td, struct __acl_delete_fd_args *uap)
{
struct file *fp;
int vfslocked, error;
int error;
error = getvnode(td->td_proc->p_fd, uap->filedes, CAP_ACL_DELETE,
&fp);
if (error == 0) {
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = vacl_delete(td, fp->f_vnode, uap->type);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
}
return (error);
}
@ -505,16 +487,14 @@ int
sys___acl_aclcheck_file(struct thread *td, struct __acl_aclcheck_file_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|FOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_aclcheck(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -525,16 +505,14 @@ int
sys___acl_aclcheck_link(struct thread *td, struct __acl_aclcheck_link_args *uap)
{
struct nameidata nd;
int vfslocked, error;
int error;
NDINIT(&nd, LOOKUP, MPSAFE|NOFOLLOW, UIO_USERSPACE, uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vacl_aclcheck(td, nd.ni_vp, uap->type, uap->aclp);
NDFREE(&nd, 0);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -545,15 +523,13 @@ int
sys___acl_aclcheck_fd(struct thread *td, struct __acl_aclcheck_fd_args *uap)
{
struct file *fp;
int vfslocked, error;
int error;
error = getvnode(td->td_proc->p_fd, uap->filedes, CAP_ACL_CHECK,
&fp);
if (error == 0) {
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = vacl_aclcheck(td, fp->f_vnode, uap->type, uap->aclp);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
}
return (error);
}

3
sys/kern/vfs_aio.c
View File

@ -835,10 +835,8 @@ static int
aio_fsync_vnode(struct thread *td, struct vnode *vp)
{
struct mount *mp;
int vfslocked;
int error;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
goto drop;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
@ -852,7 +850,6 @@ aio_fsync_vnode(struct thread *td, struct vnode *vp)
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
drop:
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

29
sys/kern/vfs_bio.c
View File

@ -266,14 +266,13 @@ static struct mtx nblock;
/*
* Definitions for the buffer free lists.
*/
#define BUFFER_QUEUES 6 /* number of free buffer queues */
#define BUFFER_QUEUES 5 /* number of free buffer queues */
#define QUEUE_NONE 0 /* on no queue */
#define QUEUE_CLEAN 1 /* non-B_DELWRI buffers */
#define QUEUE_DIRTY 2 /* B_DELWRI buffers */
#define QUEUE_DIRTY_GIANT 3 /* B_DELWRI buffers that need giant */
#define QUEUE_EMPTYKVA 4 /* empty buffer headers w/KVA assignment */
#define QUEUE_EMPTY 5 /* empty buffer headers */
#define QUEUE_EMPTYKVA 3 /* empty buffer headers w/KVA assignment */
#define QUEUE_EMPTY 4 /* empty buffer headers */
#define QUEUE_SENTINEL 1024 /* not an queue index, but mark for sentinel */
/* Queues for free buffers with various properties */
@ -1461,10 +1460,7 @@ brelse(struct buf *bp)
TAILQ_INSERT_HEAD(&bufqueues[QUEUE_CLEAN], bp, b_freelist);
/* remaining buffers */
} else {
if ((bp->b_flags & (B_DELWRI|B_NEEDSGIANT)) ==
(B_DELWRI|B_NEEDSGIANT))
bp->b_qindex = QUEUE_DIRTY_GIANT;
else if (bp->b_flags & B_DELWRI)
if (bp->b_flags & B_DELWRI)
bp->b_qindex = QUEUE_DIRTY;
else
bp->b_qindex = QUEUE_CLEAN;
@ -1561,10 +1557,7 @@ bqrelse(struct buf *bp)
panic("bqrelse: free buffer onto another queue???");
/* buffers with stale but valid contents */
if (bp->b_flags & B_DELWRI) {
if (bp->b_flags & B_NEEDSGIANT)
bp->b_qindex = QUEUE_DIRTY_GIANT;
else
bp->b_qindex = QUEUE_DIRTY;
bp->b_qindex = QUEUE_DIRTY;
TAILQ_INSERT_TAIL(&bufqueues[bp->b_qindex], bp, b_freelist);
} else {
/*
@ -2170,12 +2163,6 @@ buf_do_flush(struct vnode *vp)
int flushed;
flushed = flushbufqueues(vp, QUEUE_DIRTY, 0);
/* The list empty check here is slightly racy */
if (!TAILQ_EMPTY(&bufqueues[QUEUE_DIRTY_GIANT])) {
mtx_lock(&Giant);
flushed += flushbufqueues(vp, QUEUE_DIRTY_GIANT, 0);
mtx_unlock(&Giant);
}
if (flushed == 0) {
/*
* Could not find any buffers without rollback
@ -2183,12 +2170,6 @@ buf_do_flush(struct vnode *vp)
* in the hopes of eventually making progress.
*/
flushbufqueues(vp, QUEUE_DIRTY, 1);
if (!TAILQ_EMPTY(
&bufqueues[QUEUE_DIRTY_GIANT])) {
mtx_lock(&Giant);
flushbufqueues(vp, QUEUE_DIRTY_GIANT, 1);
mtx_unlock(&Giant);
}
}
return (flushed);
}

43
sys/kern/vfs_cache.c
View File

@ -1069,7 +1069,7 @@ kern___getcwd(struct thread *td, u_char *buf, enum uio_seg bufseg, u_int buflen)
char *bp, *tmpbuf;
struct filedesc *fdp;
struct vnode *cdir, *rdir;
int error, vfslocked;
int error;
if (disablecwd)
return (ENODEV);
@ -1087,12 +1087,8 @@ kern___getcwd(struct thread *td, u_char *buf, enum uio_seg bufseg, u_int buflen)
VREF(rdir);
FILEDESC_SUNLOCK(fdp);
error = vn_fullpath1(td, cdir, rdir, tmpbuf, &bp, buflen);
vfslocked = VFS_LOCK_GIANT(rdir->v_mount);
vrele(rdir);
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = VFS_LOCK_GIANT(cdir->v_mount);
vrele(cdir);
VFS_UNLOCK_GIANT(vfslocked);
if (!error) {
if (bufseg == UIO_SYSSPACE)
@ -1139,7 +1135,7 @@ vn_fullpath(struct thread *td, struct vnode *vn, char **retbuf, char **freebuf)
char *buf;
struct filedesc *fdp;
struct vnode *rdir;
int error, vfslocked;
int error;
if (disablefullpath)
return (ENODEV);
@ -1153,9 +1149,7 @@ vn_fullpath(struct thread *td, struct vnode *vn, char **retbuf, char **freebuf)
VREF(rdir);
FILEDESC_SUNLOCK(fdp);
error = vn_fullpath1(td, vn, rdir, buf, retbuf, MAXPATHLEN);
vfslocked = VFS_LOCK_GIANT(rdir->v_mount);
vrele(rdir);
VFS_UNLOCK_GIANT(vfslocked);
if (!error)
*freebuf = buf;
@ -1208,7 +1202,7 @@ vn_vptocnp_locked(struct vnode **vp, struct ucred *cred, char *buf,
{
struct vnode *dvp;
struct namecache *ncp;
int error, vfslocked;
int error;
TAILQ_FOREACH(ncp, &((*vp)->v_cache_dst), nc_dst) {
if ((ncp->nc_flag & NCF_ISDOTDOT) == 0)
@ -1217,9 +1211,7 @@ vn_vptocnp_locked(struct vnode **vp, struct ucred *cred, char *buf,
if (ncp != NULL) {
if (*buflen < ncp->nc_nlen) {
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT((*vp)->v_mount);
vrele(*vp);
VFS_UNLOCK_GIANT(vfslocked);
numfullpathfail4++;
error = ENOMEM;
SDT_PROBE(vfs, namecache, fullpath, return, error,
@ -1234,20 +1226,16 @@ vn_vptocnp_locked(struct vnode **vp, struct ucred *cred, char *buf,
*vp = ncp->nc_dvp;
vref(*vp);
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(dvp->v_mount);
vrele(dvp);
VFS_UNLOCK_GIANT(vfslocked);
CACHE_RLOCK();
return (0);
}
SDT_PROBE(vfs, namecache, fullpath, miss, vp, 0, 0, 0, 0);
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT((*vp)->v_mount);
vn_lock(*vp, LK_SHARED | LK_RETRY);
error = VOP_VPTOCNP(*vp, &dvp, cred, buf, buflen);
vput(*vp);
VFS_UNLOCK_GIANT(vfslocked);
if (error) {
numfullpathfail2++;
SDT_PROBE(vfs, namecache, fullpath, return, error, vp,
@ -1260,9 +1248,7 @@ vn_vptocnp_locked(struct vnode **vp, struct ucred *cred, char *buf,
if (dvp->v_iflag & VI_DOOMED) {
/* forced unmount */
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(dvp->v_mount);
vrele(dvp);
VFS_UNLOCK_GIANT(vfslocked);
error = ENOENT;
SDT_PROBE(vfs, namecache, fullpath, return, error, vp,
NULL, 0, 0);
@ -1282,7 +1268,7 @@ static int
vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
char *buf, char **retbuf, u_int buflen)
{
int error, slash_prefixed, vfslocked;
int error, slash_prefixed;
#ifdef KDTRACE_HOOKS
struct vnode *startvp = vp;
#endif
@ -1303,9 +1289,7 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
return (error);
if (buflen == 0) {
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
return (ENOMEM);
}
buf[--buflen] = '/';
@ -1315,9 +1299,7 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
if (vp->v_vflag & VV_ROOT) {
if (vp->v_iflag & VI_DOOMED) { /* forced unmount */
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
error = ENOENT;
SDT_PROBE(vfs, namecache, fullpath, return,
error, vp, NULL, 0, 0);
@ -1326,18 +1308,14 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
vp1 = vp->v_mount->mnt_vnodecovered;
vref(vp1);
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
vp = vp1;
CACHE_RLOCK();
continue;
}
if (vp->v_type != VDIR) {
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
numfullpathfail1++;
error = ENOTDIR;
SDT_PROBE(vfs, namecache, fullpath, return,
@ -1349,9 +1327,7 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
break;
if (buflen == 0) {
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
error = ENOMEM;
SDT_PROBE(vfs, namecache, fullpath, return, error,
startvp, NULL, 0, 0);
@ -1365,9 +1341,7 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
if (!slash_prefixed) {
if (buflen == 0) {
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
numfullpathfail4++;
SDT_PROBE(vfs, namecache, fullpath, return, ENOMEM,
startvp, NULL, 0, 0);
@ -1377,9 +1351,7 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir,
}
numfullpathfound++;
CACHE_RUNLOCK();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
SDT_PROBE(vfs, namecache, fullpath, return, 0, startvp, buf + buflen,
0, 0);
@ -1441,9 +1413,8 @@ vn_path_to_global_path(struct thread *td, struct vnode *vp, char *path,
struct nameidata nd;
struct vnode *vp1;
char *rpath, *fbuf;
int error, vfslocked;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
ASSERT_VOP_ELOCKED(vp, __func__);
/* Return ENODEV if sysctl debug.disablefullpath==1 */
@ -1470,14 +1441,13 @@ vn_path_to_global_path(struct thread *td, struct vnode *vp, char *path,
* As a side effect, the vnode is relocked.
* If vnode was renamed, return ENOENT.
*/
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_SYSSPACE, path, td);
error = namei(&nd);
if (error != 0) {
vrele(vp);
goto out;
}
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
vp1 = nd.ni_vp;
vrele(vp);
@ -1487,7 +1457,6 @@ vn_path_to_global_path(struct thread *td, struct vnode *vp, char *path,
vput(vp1);
error = ENOENT;
}
VFS_UNLOCK_GIANT(vfslocked);
out:
free(fbuf, M_TEMP);

5
sys/kern/vfs_default.c
View File

@ -1009,7 +1009,7 @@ vop_stdadvise(struct vop_advise_args *ap)
{
struct vnode *vp;
off_t start, end;
int error, vfslocked;
int error;
vp = ap->a_vp;
switch (ap->a_advice) {
@ -1030,11 +1030,9 @@ vop_stdadvise(struct vop_advise_args *ap)
* requested range.
*/
error = 0;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
if (vp->v_iflag & VI_DOOMED) {
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
break;
}
vinvalbuf(vp, V_CLEANONLY, 0, 0);
@ -1047,7 +1045,6 @@ vop_stdadvise(struct vop_advise_args *ap)
VM_OBJECT_UNLOCK(vp->v_object);
}
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
break;
default:
error = EINVAL;

87
sys/kern/vfs_extattr.c
View File

@ -69,7 +69,7 @@ sys_extattrctl(td, uap)
struct nameidata nd;
struct mount *mp, *mp_writable;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, fnvfslocked, error;
int error;
AUDIT_ARG_CMD(uap->cmd);
AUDIT_ARG_VALUE(uap->attrnamespace);
@ -85,27 +85,24 @@ sys_extattrctl(td, uap)
}
AUDIT_ARG_TEXT(attrname);
vfslocked = fnvfslocked = 0;
mp = NULL;
filename_vp = NULL;
if (uap->filename != NULL) {
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE2,
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE2,
UIO_USERSPACE, uap->filename, td);
error = namei(&nd);
if (error)
return (error);
fnvfslocked = NDHASGIANT(&nd);
filename_vp = nd.ni_vp;
NDFREE(&nd, NDF_NO_VP_RELE);
}
/* uap->path is always defined. */
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | LOCKLEAF | AUDITVNODE1,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_USERSPACE, uap->path, td);
error = namei(&nd);
if (error)
goto out;
vfslocked = NDHASGIANT(&nd);
mp = nd.ni_vp->v_mount;
error = vfs_busy(mp, 0);
if (error) {
@ -145,8 +142,6 @@ sys_extattrctl(td, uap)
*/
if (filename_vp != NULL)
vrele(filename_vp);
VFS_UNLOCK_GIANT(fnvfslocked);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -170,7 +165,6 @@ extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
ssize_t cnt;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
@ -222,7 +216,7 @@ sys_extattr_set_fd(td, uap)
{
struct file *fp;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
@ -235,11 +229,9 @@ sys_extattr_set_fd(td, uap)
if (error)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = extattr_set_vp(fp->f_vnode, uap->attrnamespace,
attrname, uap->data, uap->nbytes, td);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -257,7 +249,7 @@ sys_extattr_set_file(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -265,19 +257,17 @@ sys_extattr_set_file(td, uap)
return (error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_set_vp(nd.ni_vp, uap->attrnamespace, attrname,
uap->data, uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -294,7 +284,7 @@ sys_extattr_set_link(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -302,19 +292,17 @@ sys_extattr_set_link(td, uap)
return (error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_set_vp(nd.ni_vp, uap->attrnamespace, attrname,
uap->data, uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -338,7 +326,6 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
size_t size, *sizep;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
/*
@ -402,7 +389,7 @@ sys_extattr_get_fd(td, uap)
{
struct file *fp;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
@ -415,12 +402,10 @@ sys_extattr_get_fd(td, uap)
if (error)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = extattr_get_vp(fp->f_vnode, uap->attrnamespace,
attrname, uap->data, uap->nbytes, td);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -437,7 +422,7 @@ sys_extattr_get_file(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -445,19 +430,16 @@ sys_extattr_get_file(td, uap)
return (error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_get_vp(nd.ni_vp, uap->attrnamespace, attrname,
uap->data, uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -474,7 +456,7 @@ sys_extattr_get_link(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -482,19 +464,17 @@ sys_extattr_get_link(td, uap)
return (error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path,
td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_get_vp(nd.ni_vp, uap->attrnamespace, attrname,
uap->data, uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -515,7 +495,6 @@ extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
struct mount *mp;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
@ -552,7 +531,7 @@ sys_extattr_delete_fd(td, uap)
{
struct file *fp;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
@ -566,11 +545,9 @@ sys_extattr_delete_fd(td, uap)
if (error)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = extattr_delete_vp(fp->f_vnode, uap->attrnamespace,
attrname, td);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -585,7 +562,7 @@ sys_extattr_delete_file(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -593,17 +570,14 @@ sys_extattr_delete_file(td, uap)
return(error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -618,7 +592,7 @@ sys_extattr_delete_link(td, uap)
{
struct nameidata nd;
char attrname[EXTATTR_MAXNAMELEN];
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@ -626,17 +600,14 @@ sys_extattr_delete_link(td, uap)
return(error);
AUDIT_ARG_TEXT(attrname);
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -660,7 +631,6 @@ extattr_list_vp(struct vnode *vp, int attrnamespace, void *data,
ssize_t cnt;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
auiop = NULL;
@ -717,7 +687,7 @@ sys_extattr_list_fd(td, uap)
} */ *uap;
{
struct file *fp;
int vfslocked, error;
int error;
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
@ -725,12 +695,10 @@ sys_extattr_list_fd(td, uap)
if (error)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = extattr_list_vp(fp->f_vnode, uap->attrnamespace, uap->data,
uap->nbytes, td);
fdrop(fp, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -745,22 +713,19 @@ sys_extattr_list_file(td, uap)
} */ *uap;
{
struct nameidata nd;
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_list_vp(nd.ni_vp, uap->attrnamespace, uap->data,
uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -775,21 +740,19 @@ sys_extattr_list_link(td, uap)
} */ *uap;
{
struct nameidata nd;
int vfslocked, error;
int error;
AUDIT_ARG_VALUE(uap->attrnamespace);
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
uap->path, td);
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path,
td);
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
vfslocked = NDHASGIANT(&nd);
error = extattr_list_vp(nd.ni_vp, uap->attrnamespace, uap->data,
uap->nbytes, td);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

2
sys/kern/vfs_init.c
View File

@ -166,7 +166,7 @@ vfs_register(struct vfsconf *vfc)
return (EINVAL);
}
if (vfs_byname(vfc->vfc_name) != NULL)
return EEXIST;
return (EEXIST);
if (vfs_typenumhash != 0) {
/*

61
sys/kern/vfs_lookup.c
View File

@ -133,10 +133,7 @@ namei(struct nameidata *ndp)
struct componentname *cnp = &ndp->ni_cnd;
struct thread *td = cnp->cn_thread;
struct proc *p = td->td_proc;
int vfslocked;
KASSERT((cnp->cn_flags & MPSAFE) != 0 || mtx_owned(&Giant) != 0,
("NOT MPSAFE and Giant not held"));
ndp->ni_cnd.cn_cred = ndp->ni_cnd.cn_thread->td_ucred;
KASSERT(cnp->cn_cred && p, ("namei: bad cred/proc"));
KASSERT((cnp->cn_nameiop & (~OPMASK)) == 0,
@ -249,9 +246,7 @@ namei(struct nameidata *ndp)
if (error != 0 || dp != NULL) {
FILEDESC_SUNLOCK(fdp);
if (error == 0 && dp->v_type != VDIR) {
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
vrele(dp);
VFS_UNLOCK_GIANT(vfslocked);
error = ENOTDIR;
}
}
@ -268,15 +263,11 @@ namei(struct nameidata *ndp)
dp = fdp->fd_cdir;
VREF(dp);
FILEDESC_SUNLOCK(fdp);
if (ndp->ni_startdir != NULL) {
vfslocked = VFS_LOCK_GIANT(ndp->ni_startdir->v_mount);
if (ndp->ni_startdir != NULL)
vrele(ndp->ni_startdir);
VFS_UNLOCK_GIANT(vfslocked);
}
}
SDT_PROBE(vfs, namei, lookup, entry, dp, cnp->cn_pnbuf,
cnp->cn_flags, 0, 0);
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
for (;;) {
/*
* Check if root directory should replace current directory.
@ -285,7 +276,6 @@ namei(struct nameidata *ndp)
cnp->cn_nameptr = cnp->cn_pnbuf;
if (*(cnp->cn_nameptr) == '/') {
vrele(dp);
VFS_UNLOCK_GIANT(vfslocked);
if (ndp->ni_strictrelative != 0) {
#ifdef KTRACE
if (KTRPOINT(curthread, KTR_CAPFAIL))
@ -298,11 +288,8 @@ namei(struct nameidata *ndp)
ndp->ni_pathlen--;
}
dp = ndp->ni_rootdir;
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
VREF(dp);
}
if (vfslocked)
ndp->ni_cnd.cn_flags |= GIANTHELD;
ndp->ni_startdir = dp;
error = lookup(ndp);
if (error) {
@ -315,8 +302,6 @@ namei(struct nameidata *ndp)
0, 0);
return (error);
}
vfslocked = (ndp->ni_cnd.cn_flags & GIANTHELD) != 0;
ndp->ni_cnd.cn_flags &= ~GIANTHELD;
/*
* If not a symbolic link, we're done.
*/
@ -330,10 +315,6 @@ namei(struct nameidata *ndp)
} else
cnp->cn_flags |= HASBUF;
if ((cnp->cn_flags & MPSAFE) == 0) {
VFS_UNLOCK_GIANT(vfslocked);
} else if (vfslocked)
ndp->ni_cnd.cn_flags |= GIANTHELD;
SDT_PROBE(vfs, namei, lookup, return, 0, ndp->ni_vp,
0, 0, 0);
return (0);
@ -400,7 +381,6 @@ namei(struct nameidata *ndp)
vput(ndp->ni_vp);
ndp->ni_vp = NULL;
vrele(ndp->ni_dvp);
VFS_UNLOCK_GIANT(vfslocked);
SDT_PROBE(vfs, namei, lookup, return, error, NULL, 0, 0, 0);
return (error);
}
@ -506,19 +486,13 @@ lookup(struct nameidata *ndp)
int error = 0;
int dpunlocked = 0; /* dp has already been unlocked */
struct componentname *cnp = &ndp->ni_cnd;
int vfslocked; /* VFS Giant state for child */
int dvfslocked; /* VFS Giant state for parent */
int tvfslocked;
int lkflags_save;
int ni_dvp_unlocked;
/*
* Setup: break out flag bits into variables.
*/
dvfslocked = (ndp->ni_cnd.cn_flags & GIANTHELD) != 0;
vfslocked = 0;
ni_dvp_unlocked = 0;
ndp->ni_cnd.cn_flags &= ~GIANTHELD;
wantparent = cnp->cn_flags & (LOCKPARENT | WANTPARENT);
KASSERT(cnp->cn_nameiop == LOOKUP || wantparent,
("CREATE, DELETE, RENAME require LOCKPARENT or WANTPARENT."));
@ -684,7 +658,6 @@ lookup(struct nameidata *ndp)
(cnp->cn_flags & NOCROSSMOUNT) != 0)) {
ndp->ni_dvp = dp;
ndp->ni_vp = dp;
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
VREF(dp);
goto nextname;
}
@ -696,11 +669,8 @@ lookup(struct nameidata *ndp)
}
tdp = dp;
dp = dp->v_mount->mnt_vnodecovered;
tvfslocked = dvfslocked;
dvfslocked = VFS_LOCK_GIANT(dp->v_mount);
VREF(dp);
vput(tdp);
VFS_UNLOCK_GIANT(tvfslocked);
vn_lock(dp,
compute_cn_lkflags(dp->v_mount, cnp->cn_lkflags |
LK_RETRY, ISDOTDOT));
@ -722,7 +692,6 @@ lookup(struct nameidata *ndp)
ndp->ni_dvp = dp;
ndp->ni_vp = NULL;
ASSERT_VOP_LOCKED(dp, "lookup");
VNASSERT(vfslocked == 0, dp, ("lookup: vfslocked %d", vfslocked));
/*
* If we have a shared lock we may need to upgrade the lock for the
* last operation.
@ -754,11 +723,8 @@ lookup(struct nameidata *ndp)
(dp->v_mount->mnt_flag & MNT_UNION)) {
tdp = dp;
dp = dp->v_mount->mnt_vnodecovered;
tvfslocked = dvfslocked;
dvfslocked = VFS_LOCK_GIANT(dp->v_mount);
VREF(dp);
vput(tdp);
VFS_UNLOCK_GIANT(tvfslocked);
vn_lock(dp,
compute_cn_lkflags(dp->v_mount, cnp->cn_lkflags |
LK_RETRY, cnp->cn_flags));
@ -812,7 +778,6 @@ lookup(struct nameidata *ndp)
}
dp = ndp->ni_vp;
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
/*
* Check to see if the vnode has been mounted on;
@ -823,14 +788,10 @@ lookup(struct nameidata *ndp)
if (vfs_busy(mp, 0))
continue;
vput(dp);
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = VFS_LOCK_GIANT(mp);
if (dp != ndp->ni_dvp)
vput(ndp->ni_dvp);
else
vrele(ndp->ni_dvp);
VFS_UNLOCK_GIANT(dvfslocked);
dvfslocked = 0;
vref(vp_crossmp);
ndp->ni_dvp = vp_crossmp;
error = VFS_ROOT(mp, compute_cn_lkflags(mp, cnp->cn_lkflags,
@ -891,9 +852,6 @@ lookup(struct nameidata *ndp)
vput(ndp->ni_dvp);
else
vrele(ndp->ni_dvp);
VFS_UNLOCK_GIANT(dvfslocked);
dvfslocked = vfslocked; /* dp becomes dvp in dirloop */
vfslocked = 0;
goto dirloop;
}
/*
@ -922,8 +880,6 @@ lookup(struct nameidata *ndp)
vput(ndp->ni_dvp);
else
vrele(ndp->ni_dvp);
VFS_UNLOCK_GIANT(dvfslocked);
dvfslocked = 0;
} else if ((cnp->cn_flags & LOCKPARENT) == 0 && ndp->ni_dvp != dp) {
VOP_UNLOCK(ndp->ni_dvp, 0);
ni_dvp_unlocked = 1;
@ -949,10 +905,6 @@ lookup(struct nameidata *ndp)
goto bad2;
}
}
if (vfslocked && dvfslocked)
VFS_UNLOCK_GIANT(dvfslocked); /* Only need one */
if (vfslocked || dvfslocked)
ndp->ni_cnd.cn_flags |= GIANTHELD;
return (0);
bad2:
@ -965,9 +917,6 @@ lookup(struct nameidata *ndp)
bad:
if (!dpunlocked)
vput(dp);
VFS_UNLOCK_GIANT(vfslocked);
VFS_UNLOCK_GIANT(dvfslocked);
ndp->ni_cnd.cn_flags &= ~GIANTHELD;
ndp->ni_vp = NULL;
return (error);
}
@ -1230,13 +1179,13 @@ kern_alternate_path(struct thread *td, const char *prefix, const char *path,
for (cp = &ptr[len] - 1; *cp != '/'; cp--);
*cp = '\0';
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, buf, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, td);
error = namei(&nd);
*cp = '/';
if (error != 0)
goto keeporig;
} else {
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, buf, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, td);
error = namei(&nd);
if (error != 0)
@ -1250,7 +1199,7 @@ kern_alternate_path(struct thread *td, const char *prefix, const char *path,
* root directory and never finding it, because "/" resolves
* to the emulation root directory. This is expensive :-(
*/
NDINIT(&ndroot, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, prefix,
NDINIT(&ndroot, LOOKUP, FOLLOW, UIO_SYSSPACE, prefix,
td);
/* We shouldn't ever get an error from this namei(). */
@ -1261,13 +1210,11 @@ kern_alternate_path(struct thread *td, const char *prefix, const char *path,
NDFREE(&ndroot, NDF_ONLY_PNBUF);
vrele(ndroot.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&ndroot));
}
}
NDFREE(&nd, NDF_ONLY_PNBUF);
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
keeporig:
/* If there was an error, use the original path name. */

27
sys/kern/vfs_mount.c
View File

@ -37,8 +37,6 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_vfs_allow_nonmpsafe.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
@ -821,14 +819,6 @@ vfs_domount_first(
* get. No freeing of cn_pnbuf.
*/
error = VFS_MOUNT(mp);
#ifndef VFS_ALLOW_NONMPSAFE
if (error == 0 && VFS_NEEDSGIANT(mp)) {
(void)VFS_UNMOUNT(mp, fsflags);
error = ENXIO;
printf("%s: Mounting non-MPSAFE fs (%s) is disabled\n",
__func__, mp->mnt_vfc->vfc_name);
}
#endif
if (error != 0) {
vfs_unbusy(mp);
vfs_mount_destroy(mp);
@ -838,11 +828,6 @@ vfs_domount_first(
vrele(vp);
return (error);
}
#ifdef VFS_ALLOW_NONMPSAFE
if (VFS_NEEDSGIANT(mp))
printf("%s: Mounting non-MPSAFE fs (%s) is deprecated\n",
__func__, mp->mnt_vfc->vfc_name);
#endif
if (mp->mnt_opt != NULL)
vfs_freeopts(mp->mnt_opt);
@ -1100,13 +1085,12 @@ vfs_domount(
/*
* Get vnode to be covered or mount point's vnode in case of MNT_UPDATE.
*/
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_SYSSPACE, fspath, td);
error = namei(&nd);
if (error != 0)
return (error);
if (!NDHASGIANT(&nd))
mtx_lock(&Giant);
mtx_lock(&Giant);
NDFREE(&nd, NDF_ONLY_PNBUF);
vp = nd.ni_vp;
if ((fsflags & MNT_UPDATE) == 0) {
@ -1153,7 +1137,7 @@ sys_unmount(td, uap)
struct nameidata nd;
struct mount *mp;
char *pathbuf;
int error, id0, id1, vfslocked;
int error, id0, id1;
AUDIT_ARG_VALUE(uap->flags);
if (jailed(td->td_ucred) || usermount == 0) {
@ -1190,17 +1174,14 @@ sys_unmount(td, uap)
/*
* Try to find global path for path argument.
*/
NDINIT(&nd, LOOKUP,
FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_SYSSPACE, pathbuf, td);
if (namei(&nd) == 0) {
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = vn_path_to_global_path(td, nd.ni_vp, pathbuf,
MNAMELEN);
if (error == 0 || error == ENODEV)
vput(nd.ni_vp);
VFS_UNLOCK_GIANT(vfslocked);
}
mtx_lock(&mountlist_mtx);
TAILQ_FOREACH_REVERSE(mp, &mountlist, mntlist, mnt_list) {

7
sys/kern/vfs_mountroot.c
View File

@ -872,16 +872,14 @@ vfs_mountroot_readconf(struct thread *td, struct sbuf *sb)
struct nameidata nd;
off_t ofs;
ssize_t resid;
int error, flags, len, vfslocked;
int error, flags, len;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE,
"/.mount.conf", td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/.mount.conf", td);
flags = FREAD;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
return (error);
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
ofs = 0;
len = sizeof(buf) - 1;
@ -900,7 +898,6 @@ vfs_mountroot_readconf(struct thread *td, struct sbuf *sb)
VOP_UNLOCK(nd.ni_vp, 0);
vn_close(nd.ni_vp, FREAD, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

62
sys/kern/vfs_subr.c
View File

@ -93,9 +93,6 @@ __FBSDID("$FreeBSD$");
#include <ddb/ddb.h>
#endif
#define WI_MPSAFEQ 0
#define WI_GIANTQ 1
static void delmntque(struct vnode *vp);
static int flushbuflist(struct bufv *bufv, int flags, struct bufobj *bo,
int slpflag, int slptimeo);
@ -217,7 +214,7 @@ static uma_zone_t vnodepoll_zone;
static int syncer_delayno;
static long syncer_mask;
LIST_HEAD(synclist, bufobj);
static struct synclist *syncer_workitem_pending[2];
static struct synclist *syncer_workitem_pending;
/*
* The sync_mtx protects:
* bo->bo_synclist
@ -329,9 +326,7 @@ vntblinit(void *dummy __unused)
/*
* Initialize the filesystem syncer.
*/
syncer_workitem_pending[WI_MPSAFEQ] = hashinit(syncer_maxdelay, M_VNODE,
&syncer_mask);
syncer_workitem_pending[WI_GIANTQ] = hashinit(syncer_maxdelay, M_VNODE,
syncer_workitem_pending = hashinit(syncer_maxdelay, M_VNODE,
&syncer_mask);
syncer_maxdelay = syncer_mask + 1;
mtx_init(&sync_mtx, "Syncer mtx", NULL, MTX_DEF);
@ -761,7 +756,6 @@ static void
vnlru_free(int count)
{
struct vnode *vp;
int vfslocked;
mtx_assert(&vnode_free_list_mtx, MA_OWNED);
for (; count > 0; count--) {
@ -793,9 +787,7 @@ vnlru_free(int count)
vholdl(vp);
mtx_unlock(&vnode_free_list_mtx);
VI_UNLOCK(vp);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vtryrecycle(vp);
VFS_UNLOCK_GIANT(vfslocked);
/*
* If the recycled succeeded this vdrop will actually free
* the vnode. If not it will simply place it back on
@ -817,7 +809,7 @@ static void
vnlru_proc(void)
{
struct mount *mp, *nmp;
int done, vfslocked;
int done;
struct proc *p = vnlruproc;
EVENTHANDLER_REGISTER(shutdown_pre_sync, kproc_shutdown, p,
@ -843,9 +835,7 @@ vnlru_proc(void)
nmp = TAILQ_NEXT(mp, mnt_list);
continue;
}
vfslocked = VFS_LOCK_GIANT(mp);
done += vlrureclaim(mp);
VFS_UNLOCK_GIANT(vfslocked);
mtx_lock(&mountlist_mtx);
nmp = TAILQ_NEXT(mp, mnt_list);
vfs_unbusy(mp);
@ -1141,11 +1131,8 @@ insmntque1(struct vnode *vp, struct mount *mp,
KASSERT(vp->v_mount == NULL,
("insmntque: vnode already on per mount vnode list"));
VNASSERT(mp != NULL, vp, ("Don't call insmntque(foo, NULL)"));
#ifdef DEBUG_VFS_LOCKS
if (!VFS_NEEDSGIANT(mp))
ASSERT_VOP_ELOCKED(vp,
"insmntque: mp-safe fs and non-locked vp");
#endif
ASSERT_VOP_ELOCKED(vp, "insmntque: non-locked vp");
/*
* We acquire the vnode interlock early to ensure that the
* vnode cannot be recycled by another process releasing a
@ -1679,8 +1666,6 @@ bgetvp(struct vnode *vp, struct buf *bp)
("bgetvp: bp already attached! %p", bp));
vhold(vp);
if (VFS_NEEDSGIANT(vp->v_mount) || bo->bo_flag & BO_NEEDSGIANT)
bp->b_flags |= B_NEEDSGIANT;
bp->b_vp = vp;
bp->b_bufobj = bo;
/*
@ -1718,7 +1703,6 @@ brelvp(struct buf *bp)
syncer_worklist_len--;
mtx_unlock(&sync_mtx);
}
bp->b_flags &= ~B_NEEDSGIANT;
bp->b_vp = NULL;
bp->b_bufobj = NULL;
BO_UNLOCK(bo);
@ -1731,7 +1715,7 @@ brelvp(struct buf *bp)
static void
vn_syncer_add_to_worklist(struct bufobj *bo, int delay)
{
int queue, slot;
int slot;
ASSERT_BO_LOCKED(bo);
@ -1747,10 +1731,7 @@ vn_syncer_add_to_worklist(struct bufobj *bo, int delay)
delay = syncer_maxdelay - 2;
slot = (syncer_delayno + delay) & syncer_mask;
queue = VFS_NEEDSGIANT(bo->__bo_vnode->v_mount) ? WI_GIANTQ :
WI_MPSAFEQ;
LIST_INSERT_HEAD(&syncer_workitem_pending[queue][slot], bo,
bo_synclist);
LIST_INSERT_HEAD(&syncer_workitem_pending[slot], bo, bo_synclist);
mtx_unlock(&sync_mtx);
}
@ -1830,8 +1811,7 @@ sync_vnode(struct synclist *slp, struct bufobj **bo, struct thread *td)
static void
sched_sync(void)
{
struct synclist *gnext, *next;
struct synclist *gslp, *slp;
struct synclist *next, *slp;
struct bufobj *bo;
long starttime;
struct thread *td = curthread;
@ -1877,13 +1857,11 @@ sched_sync(void)
* Skip over empty worklist slots when shutting down.
*/
do {
slp = &syncer_workitem_pending[WI_MPSAFEQ][syncer_delayno];
gslp = &syncer_workitem_pending[WI_GIANTQ][syncer_delayno];
slp = &syncer_workitem_pending[syncer_delayno];
syncer_delayno += 1;
if (syncer_delayno == syncer_maxdelay)
syncer_delayno = 0;
next = &syncer_workitem_pending[WI_MPSAFEQ][syncer_delayno];
gnext = &syncer_workitem_pending[WI_GIANTQ][syncer_delayno];
next = &syncer_workitem_pending[syncer_delayno];
/*
* If the worklist has wrapped since the
* it was emptied of all but syncer vnodes,
@ -1897,7 +1875,7 @@ sched_sync(void)
syncer_final_iter = SYNCER_SHUTDOWN_SPEEDUP;
}
} while (syncer_state != SYNCER_RUNNING && LIST_EMPTY(slp) &&
LIST_EMPTY(gslp) && syncer_worklist_len > 0);
syncer_worklist_len > 0);
/*
* Keep track of the last time there was anything
@ -1921,21 +1899,6 @@ sched_sync(void)
wdog_kern_pat(WD_LASTVAL);
}
if (!LIST_EMPTY(gslp)) {
mtx_unlock(&sync_mtx);
mtx_lock(&Giant);
mtx_lock(&sync_mtx);
while (!LIST_EMPTY(gslp)) {
error = sync_vnode(gslp, &bo, td);
if (error == 1) {
LIST_REMOVE(bo, bo_synclist);
LIST_INSERT_HEAD(gnext, bo,
bo_synclist);
continue;
}
}
mtx_unlock(&Giant);
}
if (syncer_state == SYNCER_FINAL_DELAY && syncer_final_iter > 0)
syncer_final_iter--;
/*
@ -2196,7 +2159,6 @@ vget(struct vnode *vp, int flags, struct thread *td)
int error;
error = 0;
VFS_ASSERT_GIANT(vp->v_mount);
VNASSERT((flags & LK_TYPE_MASK) != 0, vp,
("vget: invalid lock operation"));
CTR3(KTR_VFS, "%s: vp %p with flags %d", __func__, vp, flags);
@ -2281,7 +2243,6 @@ vputx(struct vnode *vp, int func)
ASSERT_VOP_LOCKED(vp, "vput");
else
KASSERT(func == VPUTX_VRELE, ("vputx: wrong func"));
VFS_ASSERT_GIANT(vp->v_mount);
CTR2(KTR_VFS, "%s: vp %p", __func__, vp);
VI_LOCK(vp);
@ -4631,7 +4592,6 @@ vfs_mark_atime(struct vnode *vp, struct ucred *cred)
struct mount *mp;
mp = vp->v_mount;
VFS_ASSERT_GIANT(mp);
ASSERT_VOP_LOCKED(vp, "vfs_mark_atime");
if (mp != NULL && (mp->mnt_flag & (MNT_NOATIME | MNT_RDONLY)) == 0)
(void)VOP_MARKATIME(vp);

277
sys/kern/vfs_syscalls.c
View File

File diff suppressed because it is too large Load Diff

64
sys/kern/vfs_vnops.c
View File

@ -125,16 +125,12 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
struct vattr vat;
struct vattr *vap = &vat;
int fmode, error;
int vfslocked, mpsafe;
mpsafe = ndp->ni_cnd.cn_flags & MPSAFE;
restart:
vfslocked = 0;
fmode = *flagp;
if (fmode & O_CREAT) {
ndp->ni_cnd.cn_nameiop = CREATE;
ndp->ni_cnd.cn_flags = ISOPEN | LOCKPARENT | LOCKLEAF |
MPSAFE;
ndp->ni_cnd.cn_flags = ISOPEN | LOCKPARENT | LOCKLEAF;
if ((fmode & O_EXCL) == 0 && (fmode & O_NOFOLLOW) == 0)
ndp->ni_cnd.cn_flags |= FOLLOW;
if (!(vn_open_flags & VN_OPEN_NOAUDIT))
@ -142,9 +138,6 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
bwillwrite();
if ((error = namei(ndp)) != 0)
return (error);
vfslocked = NDHASGIANT(ndp);
if (!mpsafe)
ndp->ni_cnd.cn_flags &= ~MPSAFE;
if (ndp->ni_vp == NULL) {
VATTR_NULL(vap);
vap->va_type = VREG;
@ -154,7 +147,6 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
if (vn_start_write(ndp->ni_dvp, &mp, V_NOWAIT) != 0) {
NDFREE(ndp, NDF_ONLY_PNBUF);
vput(ndp->ni_dvp);
VFS_UNLOCK_GIANT(vfslocked);
if ((error = vn_start_write(NULL, &mp,
V_XSLEEP | PCATCH)) != 0)
return (error);
@ -170,7 +162,6 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
vput(ndp->ni_dvp);
vn_finished_write(mp);
if (error) {
VFS_UNLOCK_GIANT(vfslocked);
NDFREE(ndp, NDF_ONLY_PNBUF);
return (error);
}
@ -192,30 +183,23 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
} else {
ndp->ni_cnd.cn_nameiop = LOOKUP;
ndp->ni_cnd.cn_flags = ISOPEN |
((fmode & O_NOFOLLOW) ? NOFOLLOW : FOLLOW) |
LOCKLEAF | MPSAFE;
((fmode & O_NOFOLLOW) ? NOFOLLOW : FOLLOW) | LOCKLEAF;
if (!(fmode & FWRITE))
ndp->ni_cnd.cn_flags |= LOCKSHARED;
if (!(vn_open_flags & VN_OPEN_NOAUDIT))
ndp->ni_cnd.cn_flags |= AUDITVNODE1;
if ((error = namei(ndp)) != 0)
return (error);
if (!mpsafe)
ndp->ni_cnd.cn_flags &= ~MPSAFE;
vfslocked = NDHASGIANT(ndp);
vp = ndp->ni_vp;
}
error = vn_open_vnode(vp, fmode, cred, td, fp);
if (error)
goto bad;
*flagp = fmode;
if (!mpsafe)
VFS_UNLOCK_GIANT(vfslocked);
return (0);
bad:
NDFREE(ndp, NDF_ONLY_PNBUF);
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
*flagp = fmode;
ndp->ni_vp = NULL;
return (error);
@ -234,7 +218,6 @@ vn_open_vnode(struct vnode *vp, int fmode, struct ucred *cred,
struct flock lf;
int error, have_flock, lock_flags, type;
VFS_ASSERT_GIANT(vp->v_mount);
if (vp->v_type == VLNK)
return (EMLINK);
if (vp->v_type == VSOCK)
@ -367,8 +350,6 @@ vn_close(vp, flags, file_cred, td)
else
lock_flags = LK_EXCLUSIVE;
VFS_ASSERT_GIANT(vp->v_mount);
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, lock_flags | LK_RETRY);
if (flags & FWRITE) {
@ -441,8 +422,6 @@ vn_rdwr(enum uio_rw rw, struct vnode *vp, void *base, int len, off_t offset,
void *rl_cookie;
int error, lock_flags;
VFS_ASSERT_GIANT(vp->v_mount);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
aiov.iov_base = base;
@ -542,8 +521,6 @@ vn_rdwr_inchunks(rw, vp, base, len, offset, segflg, ioflg, active_cred,
int error = 0;
ssize_t iaresid;
VFS_ASSERT_GIANT(vp->v_mount);
do {
int chunk;
@ -692,7 +669,7 @@ vn_read(fp, uio, active_cred, flags, td)
struct vnode *vp;
struct mtx *mtxp;
int error, ioflag;
int advice, vfslocked;
int advice;
off_t offset, start, end;
KASSERT(uio->uio_td == td, ("uio_td %p is not td %p",
@ -705,7 +682,6 @@ vn_read(fp, uio, active_cred, flags, td)
if (fp->f_flag & O_DIRECT)
ioflag |= IO_DIRECT;
advice = get_advice(fp, uio);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
switch (advice) {
@ -761,7 +737,6 @@ vn_read(fp, uio, active_cred, flags, td)
mtx_unlock(mtxp);
error = VOP_ADVISE(vp, start, end, POSIX_FADV_DONTNEED);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -780,14 +755,13 @@ vn_write(fp, uio, active_cred, flags, td)
struct mount *mp;
struct mtx *mtxp;
int error, ioflag, lock_flags;
int advice, vfslocked;
int advice;
off_t offset, start, end;
KASSERT(uio->uio_td == td, ("uio_td %p is not td %p",
uio->uio_td, td));
KASSERT(flags & FOF_OFFSET, ("No FOF_OFFSET"));
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type == VREG)
bwillwrite();
ioflag = IO_UNIT;
@ -887,7 +861,6 @@ vn_write(fp, uio, active_cred, flags, td)
}
unlock:
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1155,7 +1128,6 @@ vn_truncate(struct file *fp, off_t length, struct ucred *active_cred,
struct mount *mp;
struct vnode *vp;
void *rl_cookie;
int vfslocked;
int error;
vp = fp->f_vnode;
@ -1165,7 +1137,6 @@ vn_truncate(struct file *fp, off_t length, struct ucred *active_cred,
* might happen partly before and partly after the truncation.
*/
rl_cookie = vn_rangelock_wlock(vp, 0, OFF_MAX);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
goto out1;
@ -1189,7 +1160,6 @@ vn_truncate(struct file *fp, off_t length, struct ucred *active_cred,
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
out1:
VFS_UNLOCK_GIANT(vfslocked);
vn_rangelock_unlock(vp, rl_cookie);
return (error);
}
@ -1205,14 +1175,11 @@ vn_statfile(fp, sb, active_cred, td)
struct thread *td;
{
struct vnode *vp = fp->f_vnode;
int vfslocked;
int error;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
error = vn_stat(vp, sb, active_cred, fp->f_cred, td);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1340,10 +1307,8 @@ vn_ioctl(fp, com, data, active_cred, td)
{
struct vnode *vp = fp->f_vnode;
struct vattr vattr;
int vfslocked;
int error;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = ENOTTY;
switch (vp->v_type) {
case VREG:
@ -1365,7 +1330,6 @@ vn_ioctl(fp, com, data, active_cred, td)
default:
break;
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1380,11 +1344,9 @@ vn_poll(fp, events, active_cred, td)
struct thread *td;
{
struct vnode *vp;
int vfslocked;
int error;
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
#ifdef MAC
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = mac_vnode_check_poll(active_cred, fp->f_cred, vp);
@ -1393,7 +1355,6 @@ vn_poll(fp, events, active_cred, td)
#endif
error = VOP_POLL(vp, events, fp->f_cred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1442,13 +1403,11 @@ vn_closefile(fp, td)
{
struct vnode *vp;
struct flock lf;
int vfslocked;
int error;
vp = fp->f_vnode;
fp->f_ops = &badfileops;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (fp->f_type == DTYPE_VNODE && fp->f_flag & FHASLOCK)
vref(vp);
@ -1462,7 +1421,6 @@ vn_closefile(fp, td)
(void) VOP_ADVLOCK(vp, fp, F_UNLCK, &lf, F_FLOCK);
vrele(vp);
}
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1702,14 +1660,10 @@ vfs_write_resume(mp)
static int
vn_kqfilter(struct file *fp, struct knote *kn)
{
int vfslocked;
int error;
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
error = VOP_KQFILTER(fp->f_vnode, kn);
VFS_UNLOCK_GIANT(vfslocked);
return error;
return (error);
}
/*
@ -1885,17 +1839,15 @@ vn_chmod(struct file *fp, mode_t mode, struct ucred *active_cred,
struct thread *td)
{
struct vnode *vp;
int error, vfslocked;
int error;
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
#ifdef AUDIT
vn_lock(vp, LK_SHARED | LK_RETRY);
AUDIT_ARG_VNODE1(vp);
VOP_UNLOCK(vp, 0);
#endif
error = setfmode(td, active_cred, vp, mode);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1904,17 +1856,15 @@ vn_chown(struct file *fp, uid_t uid, gid_t gid, struct ucred *active_cred,
struct thread *td)
{
struct vnode *vp;
int error, vfslocked;
int error;
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
#ifdef AUDIT
vn_lock(vp, LK_SHARED | LK_RETRY);
AUDIT_ARG_VNODE1(vp);
VOP_UNLOCK(vp, 0);
#endif
error = setfown(td, active_cred, vp, uid, gid);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

2
sys/nfsserver/nfs.h
View File

@ -268,7 +268,7 @@ int nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct mbuf **mrq);
int nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct mbuf **mrq);
int nfsrv_fhtovp(fhandle_t *, int, struct vnode **, int *,
int nfsrv_fhtovp(fhandle_t *, int, struct vnode **,
struct nfsrv_descript *, struct nfssvc_sock *, struct sockaddr *,
int *);
int nfsrv_setpublicfs(struct mount *, struct netexport *,

197
sys/nfsserver/nfs_serv.c
View File

@ -161,32 +161,6 @@ ndclear(struct nameidata *nd)
nd->ni_strictrelative = 0;
}
/*
* Takes two vfslocked integers and returns with at most one
* reference to giant. The return value indicates whether giant
* is held by either lock. This simplifies nfsrv ops by allowing
* them to track only one vfslocked var.
*/
static __inline int
nfsrv_lockedpair(int vfs1, int vfs2)
{
if (vfs1 && vfs2)
VFS_UNLOCK_GIANT(vfs2);
return (vfs1 | vfs2);
}
static __inline int
nfsrv_lockedpair_nd(int vfs1, struct nameidata *nd)
{
int vfs2;
vfs2 = NDHASGIANT(nd);
return nfsrv_lockedpair(vfs1, vfs2);
}
/*
* Heuristic to detect sequential operation.
*/
@ -265,16 +239,14 @@ nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct vattr vattr, *vap = &vattr;
u_long testmode, nfsmode;
int v3 = (nfsd->nd_flag & ND_NFSV3);
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
if (!v3)
panic("nfsrv3_access: v3 proc called on a v2 connection");
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
tl = nfsm_dissect_nonblock(u_int32_t *, NFSX_UNSIGNED);
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(NFSX_UNSIGNED);
nfsm_srvpostop_attr(1, NULL);
@ -310,7 +282,6 @@ nfsrv3_access(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -334,13 +305,11 @@ nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
caddr_t bpos;
int error = 0, rdonly;
struct mbuf *mb, *mreq;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(0);
error = 0;
@ -362,7 +331,6 @@ nfsrv_getattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -391,18 +359,14 @@ nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct mbuf *mb, *mreq;
struct timespec guard = { 0, 0 };
struct mount *mp = NULL;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
if ((mp = vfs_getvfs(&fhp->fh_fsid)) == NULL) {
error = ESTALE;
goto out;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
VATTR_NULL(vap);
@ -448,8 +412,7 @@ nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
/*
* Now that we have all the fields, lets do it.
*/
error = nfsrv_fhtovp(fhp, 0, &vp, &tvfslocked, nfsd, slp, nam, &rdonly);
vfslocked = nfsrv_lockedpair(vfslocked, tvfslocked);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(2 * NFSX_UNSIGNED);
if (v3)
@ -519,7 +482,6 @@ nfsrv_setattr(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (vp)
vput(vp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -544,12 +506,9 @@ nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
struct mbuf *mb, *mreq;
struct vattr va, dirattr, *vap = &va;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
@ -559,10 +518,9 @@ nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = LOOKUP;
nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART | MPSAFE;
nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART;
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirattr, &dirattr_ret, pubflag);
vfslocked = NDHASGIANT(&nd);
/*
* namei failure, only dirp to cleanup. Clear out garbarge from
@ -609,14 +567,8 @@ nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfs_pub.np_index;
ind.ni_startdir = nd.ni_vp;
VREF(ind.ni_startdir);
ind.ni_cnd.cn_flags &= ~GIANTHELD;
tvfslocked = VFS_LOCK_GIANT(ind.ni_startdir->v_mount);
if (tvfslocked)
nd.ni_cnd.cn_flags |= GIANTHELD;
error = lookup(&ind);
ind.ni_dvp = NULL;
vfslocked = nfsrv_lockedpair_nd(vfslocked, &ind);
ind.ni_cnd.cn_flags &= ~GIANTHELD;
if (error == 0) {
/*
@ -703,7 +655,6 @@ nfsrv_lookup(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(ndp->ni_startdir);
}
NDFREE(&nd, NDF_ONLY_PNBUF);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -731,10 +682,8 @@ nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh;
fhandle_t *fhp;
struct uio io, *uiop = &io;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
#ifndef nolint
mp = NULL;
#endif
@ -770,7 +719,7 @@ nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
uiop->uio_rw = UIO_READ;
uiop->uio_segflg = UIO_SYSSPACE;
uiop->uio_td = NULL;
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(2 * NFSX_UNSIGNED);
if (v3)
@ -809,7 +758,6 @@ nfsrv_readlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
m_freem(mp3);
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -843,11 +791,8 @@ nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct nfsheur *nh;
off_t off;
int ioflag = 0;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
if (v3) {
@ -865,7 +810,7 @@ nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
* as well.
*/
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
vp = NULL;
nfsm_reply(2 * NFSX_UNSIGNED);
@ -1004,7 +949,6 @@ nfsrv_read(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -1040,11 +984,8 @@ nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct uio io, *uiop = &io;
off_t off;
struct mount *mntp = NULL;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
if (mrep == NULL) {
*mrq = NULL;
error = 0;
@ -1056,7 +997,6 @@ nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mntp);
(void) vn_start_write(NULL, &mntp, V_WAIT);
vfs_rel(mntp); /* The write holds a ref. */
if (v3) {
@ -1112,8 +1052,7 @@ nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = 0;
goto nfsmout;
}
error = nfsrv_fhtovp(fhp, 0, &vp, &tvfslocked, nfsd, slp, nam, &rdonly);
vfslocked = nfsrv_lockedpair(vfslocked, tvfslocked);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
vp = NULL;
nfsm_reply(2 * NFSX_UNSIGNED);
@ -1226,7 +1165,6 @@ nfsrv_write(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (vp)
vput(vp);
vn_finished_write(mntp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -1258,11 +1196,8 @@ nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
u_quad_t tempsize;
struct timespec cverf;
struct mount *mp = NULL;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
#ifndef nolint
rdev = 0;
#endif
@ -1274,14 +1209,13 @@ nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = CREATE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
/*
* Call namei and do initial cleanup to get a few things
@ -1294,7 +1228,6 @@ nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
*/
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (dirp && !v3) {
vrele(dirp);
dirp = NULL;
@ -1430,13 +1363,8 @@ nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nd.ni_cnd.cn_flags &= ~(LOCKPARENT);
nd.ni_cnd.cn_thread = curthread;
nd.ni_cnd.cn_cred = cred;
tvfslocked = VFS_LOCK_GIANT(nd.ni_startdir->v_mount);
if (tvfslocked)
nd.ni_cnd.cn_flags |= GIANTHELD;
error = lookup(&nd);
nd.ni_dvp = NULL;
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
nd.ni_cnd.cn_flags &= ~GIANTHELD;
if (error)
goto ereply;
@ -1524,7 +1452,6 @@ nfsrv_create(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(dirp);
NDFREE(&nd, NDF_ONLY_PNBUF);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1554,11 +1481,8 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
fhandle_t *fhp;
struct mount *mp = NULL;
int v3 = (nfsd->nd_flag & ND_NFSV3);
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
if (!v3)
panic("nfsrv_mknod: v3 proc called on a v2 connection");
ndclear(&nd);
@ -1569,14 +1493,13 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = CREATE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
/*
* Handle nfs_namei() call. If an error occurs, the nd structure
@ -1586,7 +1509,6 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (error) {
nfsm_reply(NFSX_WCCDATA(1));
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
@ -1646,13 +1568,8 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nd.ni_cnd.cn_flags &= ~(LOCKPARENT);
nd.ni_cnd.cn_thread = td;
nd.ni_cnd.cn_cred = td->td_ucred;
tvfslocked = VFS_LOCK_GIANT(nd.ni_startdir->v_mount);
if (tvfslocked)
nd.ni_cnd.cn_flags |= GIANTHELD;
error = lookup(&nd);
nd.ni_dvp = NULL;
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
nd.ni_cnd.cn_flags &= ~GIANTHELD;
if (error)
goto out;
@ -1704,7 +1621,6 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
}
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (0);
nfsmout:
if (nd.ni_dvp) {
@ -1721,7 +1637,6 @@ nfsrv_mknod(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(nd.ni_startdir);
NDFREE(&nd, NDF_ONLY_PNBUF);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1746,11 +1661,9 @@ nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh;
fhandle_t *fhp;
struct mount *mp = NULL;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
@ -1758,17 +1671,15 @@ nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = DELETE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (dirp && !v3) {
vrele(dirp);
dirp = NULL;
@ -1830,7 +1741,6 @@ nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (nd.ni_vp)
vput(nd.ni_vp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -1858,10 +1768,8 @@ nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
fhandle_t *ffhp, *tfhp;
uid_t saved_uid;
struct mount *mp = NULL;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
#ifndef nolint
fvp = NULL;
#endif
@ -1880,7 +1788,6 @@ nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto out1;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
@ -1891,10 +1798,9 @@ nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
saved_uid = cred->cr_uid;
fromnd.ni_cnd.cn_cred = cred;
fromnd.ni_cnd.cn_nameiop = DELETE;
fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART | MPSAFE;
fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART;
error = nfs_namei(&fromnd, nfsd, ffhp, len, slp, nam, &md,
&dpos, &fdirp, v3, &fdirfor, &fdirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &fromnd);
if (fdirp && !v3) {
vrele(fdirp);
fdirp = NULL;
@ -1914,10 +1820,9 @@ nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
cred->cr_uid = saved_uid;
tond.ni_cnd.cn_cred = cred;
tond.ni_cnd.cn_nameiop = RENAME;
tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART | MPSAFE;
tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART;
error = nfs_namei(&tond, nfsd, tfhp, len2, slp, nam, &md,
&dpos, &tdirp, v3, &tdirfor, &tdirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &tond);
if (tdirp && !v3) {
vrele(tdirp);
tdirp = NULL;
@ -2063,7 +1968,6 @@ nfsrv_rename(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(fromnd.ni_vp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -2088,12 +1992,9 @@ nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh, dnfh;
fhandle_t *fhp, *dfhp;
struct mount *mp = NULL;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
dfhp = &dnfh.fh_generic;
@ -2102,14 +2003,12 @@ nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvmtofh(dfhp);
nfsm_srvnamesiz(len);
error = nfsrv_fhtovp(fhp, 0, &vp, &tvfslocked, nfsd, slp, nam, &rdonly);
vfslocked = nfsrv_lockedpair(vfslocked, tvfslocked);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
if (v3) {
@ -2129,10 +2028,9 @@ nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
VOP_UNLOCK(vp, 0);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = CREATE;
nd.ni_cnd.cn_flags = LOCKPARENT | MPSAFE | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT;
error = nfs_namei(&nd, nfsd, dfhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (dirp && !v3) {
vrele(dirp);
dirp = NULL;
@ -2210,7 +2108,6 @@ nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (nd.ni_vp)
vrele(nd.ni_vp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -2239,12 +2136,9 @@ nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh;
fhandle_t *fhp;
struct mount *mp = NULL;
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
@ -2252,16 +2146,14 @@ nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto out;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = CREATE;
nd.ni_cnd.cn_flags = LOCKPARENT | SAVESTART | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT | SAVESTART;
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (error == 0) {
VATTR_NULL(vap);
if (v3)
@ -2327,13 +2219,8 @@ nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nd.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
nd.ni_cnd.cn_thread = curthread;
nd.ni_cnd.cn_cred = cred;
tvfslocked = VFS_LOCK_GIANT(nd.ni_startdir->v_mount);
if (tvfslocked)
nd.ni_cnd.cn_flags |= GIANTHELD;
error = lookup(&nd);
nd.ni_dvp = NULL;
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
nd.ni_cnd.cn_flags &= ~GIANTHELD;
if (error == 0) {
bzero((caddr_t)fhp, sizeof(nfh));
@ -2393,7 +2280,6 @@ nfsrv_symlink(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
free(pathcp, M_TEMP);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -2422,11 +2308,9 @@ nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh;
fhandle_t *fhp;
struct mount *mp = NULL;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
@ -2434,17 +2318,15 @@ nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto out;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = CREATE;
nd.ni_cnd.cn_flags = LOCKPARENT | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT;
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (dirp && !v3) {
vrele(dirp);
dirp = NULL;
@ -2556,7 +2438,6 @@ nfsrv_mkdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (dirp)
vrele(dirp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -2581,11 +2462,9 @@ nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
fhandle_t *fhp;
struct nameidata nd;
struct mount *mp = NULL;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
ndclear(&nd);
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
@ -2593,16 +2472,14 @@ nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto out;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
nfsm_srvnamesiz(len);
nd.ni_cnd.cn_cred = cred;
nd.ni_cnd.cn_nameiop = DELETE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | MPSAFE;
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
error = nfs_namei(&nd, nfsd, fhp, len, slp, nam, &md, &dpos,
&dirp, v3, &dirfor, &dirfor_ret, FALSE);
vfslocked = nfsrv_lockedpair_nd(vfslocked, &nd);
if (dirp && !v3) {
vrele(dirp);
dirp = NULL;
@ -2680,7 +2557,6 @@ nfsrv_rmdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(dirp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -2749,10 +2625,9 @@ nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
int v3 = (nfsd->nd_flag & ND_NFSV3);
u_quad_t off, toff, verf;
u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
int vfslocked, not_zfs;
int not_zfs;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
if (v3) {
@ -2775,7 +2650,7 @@ nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (siz > xfer)
siz = xfer;
fullsiz = siz;
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (!error && vp->v_type != VDIR) {
error = ENOTDIR;
vput(vp);
@ -3015,7 +2890,6 @@ nfsrv_readdir(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vrele(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3049,13 +2923,12 @@ nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
u_quad_t off, toff, verf;
u_long *cookies = NULL, *cookiep; /* needs to be int64_t or off_t */
int v3 = (nfsd->nd_flag & ND_NFSV3);
int usevget = 1, vfslocked;
int usevget = 1;
struct componentname cn;
struct mount *mntp = NULL;
int not_zfs;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
vp_locked = 0;
if (!v3)
panic("nfsrv_readdirplus: v3 proc called on a v2 connection");
@ -3076,7 +2949,7 @@ nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (siz > xfer)
siz = xfer;
fullsiz = siz;
error = nfsrv_fhtovp(fhp, NFSRV_FLAG_BUSY, &vp, &vfslocked, nfsd, slp,
error = nfsrv_fhtovp(fhp, NFSRV_FLAG_BUSY, &vp, nfsd, slp,
nam, &rdonly);
if (!error) {
vp_locked = 1;
@ -3245,7 +3118,7 @@ nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
usevget = 0;
cn.cn_nameiop = LOOKUP;
cn.cn_flags = ISLASTCN | NOFOLLOW | \
LOCKSHARED | LOCKLEAF | MPSAFE;
LOCKSHARED | LOCKLEAF;
cn.cn_lkflags = LK_SHARED | LK_RETRY;
cn.cn_cred = cred;
cn.cn_thread = curthread;
@ -3393,7 +3266,6 @@ nfsrv_readdirplus(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
vrele(vp);
if (mntp)
vfs_unbusy(mntp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3419,11 +3291,8 @@ nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
u_quad_t off;
struct mount *mp = NULL;
int v3 = (nfsd->nd_flag & ND_NFSV3);
int tvfslocked;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
if (!v3)
panic("nfsrv_commit: v3 proc called on a v2 connection");
fhp = &nfh.fh_generic;
@ -3432,7 +3301,6 @@ nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
error = ESTALE;
goto ereply;
}
vfslocked = VFS_LOCK_GIANT(mp);
(void) vn_start_write(NULL, &mp, V_WAIT);
vfs_rel(mp); /* The write holds a ref. */
tl = nfsm_dissect_nonblock(u_int32_t *, 3 * NFSX_UNSIGNED);
@ -3444,8 +3312,7 @@ nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
off = fxdr_hyper(tl);
tl += 2;
cnt = fxdr_unsigned(int, *tl);
error = nfsrv_fhtovp(fhp, 0, &vp, &tvfslocked, nfsd, slp, nam, &rdonly);
vfslocked = nfsrv_lockedpair(vfslocked, tvfslocked);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(2 * NFSX_UNSIGNED);
nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
@ -3561,7 +3428,6 @@ nfsrv_commit(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (vp)
vput(vp);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3588,13 +3454,11 @@ nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
fhandle_t *fhp;
struct statfs statfs;
u_quad_t tval;
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(NFSX_UNSIGNED);
if (v3)
@ -3654,7 +3518,6 @@ nfsrv_statfs(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3680,15 +3543,13 @@ nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
u_quad_t maxfsize;
struct statfs sb;
int v3 = (nfsd->nd_flag & ND_NFSV3);
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
if (!v3)
panic("nfsrv_fsinfo: v3 proc called on a v2 connection");
fhp = &nfh.fh_generic;
vfslocked = 0;
nfsm_srvmtofh(fhp);
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(NFSX_UNSIGNED);
nfsm_srvpostop_attr(getret, &at);
@ -3729,7 +3590,6 @@ nfsrv_fsinfo(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3754,15 +3614,13 @@ nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsfh_t nfh;
fhandle_t *fhp;
int v3 = (nfsd->nd_flag & ND_NFSV3);
int vfslocked;
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
if (!v3)
panic("nfsrv_pathconf: v3 proc called on a v2 connection");
vfslocked = 0;
fhp = &nfh.fh_generic;
nfsm_srvmtofh(fhp);
error = nfsrv_fhtovp(fhp, 0, &vp, &vfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &vp, nfsd, slp, nam, &rdonly);
if (error) {
nfsm_reply(NFSX_UNSIGNED);
nfsm_srvpostop_attr(getret, &at);
@ -3802,7 +3660,6 @@ nfsrv_pathconf(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
nfsmout:
if (vp)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return(error);
}
@ -3871,8 +3728,6 @@ nfsrv_access(struct vnode *vp, accmode_t accmode, struct ucred *cred,
struct vattr vattr;
int error;
VFS_ASSERT_GIANT(vp->v_mount);
nfsdbprintf(("%s %d\n", __FILE__, __LINE__));
if (accmode & VWRITE) {

43
sys/nfsserver/nfs_srvsubs.c
View File

@ -594,11 +594,7 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
int error, rdonly, linklen;
struct componentname *cnp = &ndp->ni_cnd;
int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0;
int dvfslocked;
int vfslocked;
vfslocked = 0;
dvfslocked = 0;
*retdirp = NULL;
cnp->cn_flags |= NOMACCHECK;
cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK);
@ -645,10 +641,9 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
/*
* Extract and set starting directory.
*/
error = nfsrv_fhtovp(fhp, 0, &dp, &dvfslocked, nfsd, slp, nam, &rdonly);
error = nfsrv_fhtovp(fhp, 0, &dp, nfsd, slp, nam, &rdonly);
if (error)
goto out;
vfslocked = VFS_LOCK_GIANT(dp->v_mount);
if (dp->v_type != VDIR) {
vput(dp);
error = ENOTDIR;
@ -726,14 +721,9 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
if (pubflag) {
ndp->ni_rootdir = rootvnode;
ndp->ni_loopcnt = 0;
if (cnp->cn_pnbuf[0] == '/') {
int tvfslocked;
tvfslocked = VFS_LOCK_GIANT(rootvnode->v_mount);
VFS_UNLOCK_GIANT(vfslocked);
if (cnp->cn_pnbuf[0] == '/')
dp = rootvnode;
vfslocked = tvfslocked;
}
} else {
cnp->cn_flags |= NOCROSSMOUNT;
}
@ -758,11 +748,7 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
* In either case ni_startdir will be dereferenced and NULLed
* out.
*/
if (vfslocked)
ndp->ni_cnd.cn_flags |= GIANTHELD;
error = lookup(ndp);
vfslocked = (ndp->ni_cnd.cn_flags & GIANTHELD) != 0;
ndp->ni_cnd.cn_flags &= ~GIANTHELD;
if (error)
break;
@ -860,10 +846,6 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
}
if (!lockleaf)
cnp->cn_flags &= ~LOCKLEAF;
if (cnp->cn_flags & GIANTHELD) {
mtx_unlock(&Giant);
cnp->cn_flags &= ~GIANTHELD;
}
/*
* nfs_namei() guarentees that fields will not contain garbage
@ -877,21 +859,9 @@ nfs_namei(struct nameidata *ndp, struct nfsrv_descript *nfsd,
ndp->ni_dvp = NULL;
ndp->ni_startdir = NULL;
cnp->cn_flags &= ~HASBUF;
VFS_UNLOCK_GIANT(vfslocked);
vfslocked = 0;
} else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
ndp->ni_dvp = NULL;
}
/*
* This differs from normal namei() in that even on failure we may
* return with Giant held due to the dirp return. Make sure we only
* have not recursed however. The calling code only expects to drop
* one acquire.
*/
if (vfslocked || dvfslocked)
ndp->ni_cnd.cn_flags |= GIANTHELD;
if (vfslocked && dvfslocked)
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1055,7 +1025,7 @@ nfsm_srvfattr(struct nfsrv_descript *nfsd, struct vattr *vap,
* - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
*/
int
nfsrv_fhtovp(fhandle_t *fhp, int flags, struct vnode **vpp, int *vfslockedp,
nfsrv_fhtovp(fhandle_t *fhp, int flags, struct vnode **vpp,
struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
struct sockaddr *nam, int *rdonlyp)
{
@ -1067,13 +1037,11 @@ nfsrv_fhtovp(fhandle_t *fhp, int flags, struct vnode **vpp, int *vfslockedp,
struct sockaddr_int *saddr;
#endif
int credflavor;
int vfslocked;
int numsecflavors, *secflavors;
int authsys;
int v3 = nfsd->nd_flag & ND_NFSV3;
int mountreq;
*vfslockedp = 0;
*vpp = NULL;
if (nfs_ispublicfh(fhp)) {
@ -1085,7 +1053,6 @@ nfsrv_fhtovp(fhandle_t *fhp, int flags, struct vnode **vpp, int *vfslockedp,
mp = vfs_busyfs(&fhp->fh_fsid);
if (!mp)
return (ESTALE);
vfslocked = VFS_LOCK_GIANT(mp);
error = VFS_CHECKEXP(mp, nam, &exflags, &credanon,
&numsecflavors, &secflavors);
if (error) {
@ -1169,10 +1136,6 @@ nfsrv_fhtovp(fhandle_t *fhp, int flags, struct vnode **vpp, int *vfslockedp,
if (credanon != NULL)
crfree(credanon);
if (error)
VFS_UNLOCK_GIANT(vfslocked);
else
*vfslockedp = vfslocked;
return (error);
}

3
sys/nlm/nlm_prot_impl.c
View File

@ -1769,7 +1769,6 @@ nlm_convert_to_fhandle_t(fhandle_t *fhp, struct netobj *p)
struct vfs_state {
struct mount *vs_mp;
struct vnode *vs_vp;
int vs_vfslocked;
int vs_vnlocked;
};
@ -1786,7 +1785,6 @@ nlm_get_vfs_state(struct nlm_host *host, struct svc_req *rqstp,
if (!vs->vs_mp) {
return (ESTALE);
}
vs->vs_vfslocked = VFS_LOCK_GIANT(vs->vs_mp);
/* accmode == 0 means don't check, since it is an unlock. */
if (accmode != 0) {
@ -1862,7 +1860,6 @@ nlm_release_vfs_state(struct vfs_state *vs)
}
if (vs->vs_mp)
vfs_rel(vs->vs_mp);
VFS_UNLOCK_GIANT(vs->vs_vfslocked);
}
static nlm4_stats

11
sys/security/audit/audit_arg.c
View File

@ -651,7 +651,6 @@ audit_arg_file(struct proc *p, struct file *fp)
struct socket *so;
struct inpcb *pcb;
struct vnode *vp;
int vfslocked;
ar = currecord();
if (ar == NULL)
@ -664,11 +663,9 @@ audit_arg_file(struct proc *p, struct file *fp)
* XXXAUDIT: Only possibly to record as first vnode?
*/
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
audit_arg_vnode1(vp);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
break;
case DTYPE_SOCKET:
@ -768,11 +765,6 @@ audit_arg_vnode(struct vnode *vp, struct vnode_au_info *vnp)
struct vattr vattr;
int error;
/*
* Assume that if the caller is calling audit_arg_vnode() on a
* non-MPSAFE vnode, then it will have acquired Giant.
*/
VFS_ASSERT_GIANT(vp->v_mount);
ASSERT_VOP_LOCKED(vp, "audit_arg_vnode");
error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
@ -889,7 +881,6 @@ audit_sysclose(struct thread *td, int fd)
struct kaudit_record *ar;
struct vnode *vp;
struct file *fp;
int vfslocked;
KASSERT(td != NULL, ("audit_sysclose: td == NULL"));
@ -903,10 +894,8 @@ audit_sysclose(struct thread *td, int fd)
return;
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
audit_arg_vnode1(vp);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
}

8
sys/security/audit/audit_syscalls.c
View File

@ -749,7 +749,7 @@ sys_auditctl(struct thread *td, struct auditctl_args *uap)
struct ucred *cred;
struct vnode *vp;
int error = 0;
int flags, vfslocked;
int flags;
if (jailed(td->td_ucred))
return (ENOSYS);
@ -770,20 +770,18 @@ sys_auditctl(struct thread *td, struct auditctl_args *uap)
if (uap->path == NULL)
return (EINVAL);
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_USERSPACE, uap->path, td);
flags = AUDIT_OPEN_FLAGS;
error = vn_open(&nd, &flags, 0, NULL);
if (error)
return (error);
vfslocked = NDHASGIANT(&nd);
vp = nd.ni_vp;
#ifdef MAC
error = mac_system_check_auditctl(td->td_ucred, vp);
VOP_UNLOCK(vp, 0);
if (error) {
vn_close(vp, AUDIT_CLOSE_FLAGS, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
#else
@ -792,10 +790,8 @@ sys_auditctl(struct thread *td, struct auditctl_args *uap)
NDFREE(&nd, NDF_ONLY_PNBUF);
if (vp->v_type != VREG) {
vn_close(vp, AUDIT_CLOSE_FLAGS, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (EINVAL);
}
VFS_UNLOCK_GIANT(vfslocked);
cred = td->td_ucred;
crhold(cred);

8
sys/security/audit/audit_worker.c
View File

@ -113,7 +113,7 @@ audit_record_write(struct vnode *vp, struct ucred *cred, void *data,
static struct timeval last_fail;
static int cur_lowspace_trigger;
struct statfs *mnt_stat;
int error, vfslocked;
int error;
static int cur_fail;
struct vattr vattr;
long temp;
@ -124,7 +124,6 @@ audit_record_write(struct vnode *vp, struct ucred *cred, void *data,
return;
mnt_stat = &vp->v_mount->mnt_stat;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
/*
* First, gather statistics on the audit log file and file system so
@ -258,7 +257,6 @@ audit_record_write(struct vnode *vp, struct ucred *cred, void *data,
}
}
VFS_UNLOCK_GIANT(vfslocked);
return;
fail_enospc:
@ -289,7 +287,6 @@ audit_record_write(struct vnode *vp, struct ucred *cred, void *data,
panic("audit_worker: write error %d\n", error);
} else if (ppsratecheck(&last_fail, &cur_fail, 1))
printf("audit_worker: write error %d\n", error);
VFS_UNLOCK_GIANT(vfslocked);
}
/*
@ -451,7 +448,6 @@ audit_rotate_vnode(struct ucred *cred, struct vnode *vp)
{
struct ucred *old_audit_cred;
struct vnode *old_audit_vp;
int vfslocked;
KASSERT((cred != NULL && vp != NULL) || (cred == NULL && vp == NULL),
("audit_rotate_vnode: cred %p vp %p", cred, vp));
@ -473,10 +469,8 @@ audit_rotate_vnode(struct ucred *cred, struct vnode *vp)
* If there was an old vnode/credential, close and free.
*/
if (old_audit_vp != NULL) {
vfslocked = VFS_LOCK_GIANT(old_audit_vp->v_mount);
vn_close(old_audit_vp, AUDIT_CLOSE_FLAGS, old_audit_cred,
curthread);
VFS_UNLOCK_GIANT(vfslocked);
crfree(old_audit_cred);
}
}

8
sys/security/mac/mac_process.c
View File

@ -254,7 +254,7 @@ mac_proc_vm_revoke_recurse(struct thread *td, struct ucred *cred,
struct vm_map *map)
{
vm_map_entry_t vme;
int vfslocked, result;
int result;
vm_prot_t revokeperms;
vm_object_t backing_object, object;
vm_ooffset_t offset;
@ -300,7 +300,6 @@ mac_proc_vm_revoke_recurse(struct thread *td, struct ucred *cred,
if (object->type != OBJT_VNODE)
continue;
vp = (struct vnode *)object->handle;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
result = vme->max_protection;
mac_vnode_check_mmap_downgrade(cred, vp, &result);
@ -310,10 +309,8 @@ mac_proc_vm_revoke_recurse(struct thread *td, struct ucred *cred,
* but a policy needs to get removed.
*/
revokeperms = vme->max_protection & ~result;
if (!revokeperms) {
VFS_UNLOCK_GIANT(vfslocked);
if (!revokeperms)
continue;
}
printf("pid %ld: revoking %s perms from %#lx:%ld "
"(max %s/cur %s)\n", (long)td->td_proc->p_pid,
prot2str(revokeperms), (u_long)vme->start,
@ -369,7 +366,6 @@ mac_proc_vm_revoke_recurse(struct thread *td, struct ucred *cred,
vme->protection & ~revokeperms);
vm_map_simplify_entry(map, vme);
}
VFS_UNLOCK_GIANT(vfslocked);
}
vm_map_unlock(map);
}

33
sys/security/mac/mac_syscalls.c
View File

@ -230,7 +230,7 @@ sys___mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
struct pipe *pipe;
struct socket *so;
short label_type;
int vfslocked, error;
int error;
error = copyin(uap->mac_p, &mac, sizeof(mac));
if (error)
@ -262,11 +262,9 @@ sys___mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
}
vp = fp->f_vnode;
intlabel = mac_vnode_label_alloc();
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
mac_vnode_copy_label(vp->v_label, intlabel);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
error = mac_vnode_externalize_label(intlabel, elements,
buffer, mac.m_buflen);
mac_vnode_label_free(intlabel);
@ -322,7 +320,7 @@ sys___mac_get_file(struct thread *td, struct __mac_get_file_args *uap)
struct nameidata nd;
struct label *intlabel;
struct mac mac;
int vfslocked, error;
int error;
if (!(mac_labeled & MPC_OBJECT_VNODE))
return (EINVAL);
@ -343,20 +341,18 @@ sys___mac_get_file(struct thread *td, struct __mac_get_file_args *uap)
}
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
NDINIT(&nd, LOOKUP, MPSAFE | LOCKLEAF | FOLLOW, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE,
uap->path_p, td);
error = namei(&nd);
if (error)
goto out;
intlabel = mac_vnode_label_alloc();
vfslocked = NDHASGIANT(&nd);
mac_vnode_copy_label(nd.ni_vp->v_label, intlabel);
error = mac_vnode_externalize_label(intlabel, elements, buffer,
mac.m_buflen);
NDFREE(&nd, 0);
VFS_UNLOCK_GIANT(vfslocked);
mac_vnode_label_free(intlabel);
if (error == 0)
error = copyout(buffer, mac.m_string, strlen(buffer)+1);
@ -375,7 +371,7 @@ sys___mac_get_link(struct thread *td, struct __mac_get_link_args *uap)
struct nameidata nd;
struct label *intlabel;
struct mac mac;
int vfslocked, error;
int error;
if (!(mac_labeled & MPC_OBJECT_VNODE))
return (EINVAL);
@ -396,19 +392,17 @@ sys___mac_get_link(struct thread *td, struct __mac_get_link_args *uap)
}
buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
NDINIT(&nd, LOOKUP, MPSAFE | LOCKLEAF | NOFOLLOW, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, LOCKLEAF | NOFOLLOW, UIO_USERSPACE,
uap->path_p, td);
error = namei(&nd);
if (error)
goto out;
intlabel = mac_vnode_label_alloc();
vfslocked = NDHASGIANT(&nd);
mac_vnode_copy_label(nd.ni_vp->v_label, intlabel);
error = mac_vnode_externalize_label(intlabel, elements, buffer,
mac.m_buflen);
NDFREE(&nd, 0);
VFS_UNLOCK_GIANT(vfslocked);
mac_vnode_label_free(intlabel);
if (error == 0)
@ -432,7 +426,7 @@ sys___mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
struct vnode *vp;
struct mac mac;
char *buffer;
int error, vfslocked;
int error;
error = copyin(uap->mac_p, &mac, sizeof(mac));
if (error)
@ -467,10 +461,8 @@ sys___mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
break;
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error != 0) {
VFS_UNLOCK_GIANT(vfslocked);
mac_vnode_label_free(intlabel);
break;
}
@ -478,7 +470,6 @@ sys___mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
error = vn_setlabel(vp, intlabel, td->td_ucred);
VOP_UNLOCK(vp, 0);
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
mac_vnode_label_free(intlabel);
break;
@ -532,7 +523,7 @@ sys___mac_set_file(struct thread *td, struct __mac_set_file_args *uap)
struct mount *mp;
struct mac mac;
char *buffer;
int vfslocked, error;
int error;
if (!(mac_labeled & MPC_OBJECT_VNODE))
return (EINVAL);
@ -558,10 +549,9 @@ sys___mac_set_file(struct thread *td, struct __mac_set_file_args *uap)
if (error)
goto out;
NDINIT(&nd, LOOKUP, MPSAFE | LOCKLEAF | FOLLOW, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE,
uap->path_p, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH);
if (error == 0) {
@ -572,7 +562,6 @@ sys___mac_set_file(struct thread *td, struct __mac_set_file_args *uap)
}
NDFREE(&nd, 0);
VFS_UNLOCK_GIANT(vfslocked);
out:
mac_vnode_label_free(intlabel);
return (error);
@ -586,7 +575,7 @@ sys___mac_set_link(struct thread *td, struct __mac_set_link_args *uap)
struct mount *mp;
struct mac mac;
char *buffer;
int vfslocked, error;
int error;
if (!(mac_labeled & MPC_OBJECT_VNODE))
return (EINVAL);
@ -612,10 +601,9 @@ sys___mac_set_link(struct thread *td, struct __mac_set_link_args *uap)
if (error)
goto out;
NDINIT(&nd, LOOKUP, MPSAFE | LOCKLEAF | NOFOLLOW, UIO_USERSPACE,
NDINIT(&nd, LOOKUP, LOCKLEAF | NOFOLLOW, UIO_USERSPACE,
uap->path_p, td);
error = namei(&nd);
vfslocked = NDHASGIANT(&nd);
if (error == 0) {
error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH);
if (error == 0) {
@ -626,7 +614,6 @@ sys___mac_set_link(struct thread *td, struct __mac_set_link_args *uap)
}
NDFREE(&nd, 0);
VFS_UNLOCK_GIANT(vfslocked);
out:
mac_vnode_label_free(intlabel);
return (error);

2
sys/sys/buf.h
View File

@ -216,7 +216,7 @@ struct buf {
#define B_RELBUF 0x00400000 /* Release VMIO buffer. */
#define B_00800000 0x00800000 /* Available flag. */
#define B_NOCOPY 0x01000000 /* Don't copy-on-write this buf. */
#define B_NEEDSGIANT 0x02000000 /* Buffer's vnode needs giant. */
#define B_02000000 0x02000000 /* Available flag. */
#define B_PAGING 0x04000000 /* volatile paging I/O -- bypass VMIO */
#define B_MANAGED 0x08000000 /* Managed by FS. */
#define B_RAM 0x10000000 /* Read ahead mark (flag) */

1
sys/sys/bufobj.h
View File

@ -111,7 +111,6 @@ struct bufobj {
*/
#define BO_ONWORKLST (1 << 0) /* On syncer work-list */
#define BO_WWAIT (1 << 1) /* Wait for output to complete */
#define BO_NEEDSGIANT (1 << 2) /* Require giant for child buffers. */
#define BO_MTX(bo) (&(bo)->bo_mtx)
#define BO_LOCK(bo) mtx_lock(BO_MTX((bo)))

38
sys/sys/mount.h
View File

@ -682,41 +682,6 @@ vfs_statfs_t __vfs_statfs;
({if (*(MP)->mnt_op->vfs_reclaim_lowervp != NULL) \
(*(MP)->mnt_op->vfs_reclaim_lowervp)((MP), (VP)); })
#define VFS_NEEDSGIANT_(MP) \
((MP) != NULL && ((MP)->mnt_kern_flag & MNTK_MPSAFE) == 0)
#define VFS_NEEDSGIANT(MP) __extension__ \
({ \
struct mount *_mp; \
_mp = (MP); \
VFS_NEEDSGIANT_(_mp); \
})
#define VFS_LOCK_GIANT(MP) __extension__ \
({ \
int _locked; \
struct mount *_mp; \
_mp = (MP); \
if (VFS_NEEDSGIANT_(_mp)) { \
mtx_lock(&Giant); \
_locked = 1; \
} else \
_locked = 0; \
_locked; \
})
#define VFS_UNLOCK_GIANT(locked) do \
{ \
if ((locked)) \
mtx_unlock(&Giant); \
} while (0)
#define VFS_ASSERT_GIANT(MP) do \
{ \
struct mount *_mp; \
_mp = (MP); \
if (VFS_NEEDSGIANT_(_mp)) \
mtx_assert(&Giant, MA_OWNED); \
} while (0)
#define VFS_KNOTE_LOCKED(vp, hint) do \
{ \
if (((vp)->v_vflag & VV_NOKNOTE) == 0) \
@ -735,7 +700,8 @@ vfs_statfs_t __vfs_statfs;
* Version numbers.
*/
#define VFS_VERSION_00 0x19660120
#define VFS_VERSION VFS_VERSION_00
#define VFS_VERSION_01 0x20121030
#define VFS_VERSION VFS_VERSION_01
#define VFS_SET(vfsops, fsname, flags) \
static struct vfsconf fsname ## _vfsconf = { \

4
sys/sys/namei.h
View File

@ -144,15 +144,11 @@ struct nameidata {
#define ISOPEN 0x00200000 /* caller is opening; return a real vnode. */
#define NOCROSSMOUNT 0x00400000 /* do not cross mount points */
#define NOMACCHECK 0x00800000 /* do not perform MAC checks */
#define MPSAFE 0x01000000 /* namei() must acquire Giant if needed. */
#define GIANTHELD 0x02000000 /* namei() is holding giant. */
#define AUDITVNODE1 0x04000000 /* audit the looked up vnode information */
#define AUDITVNODE2 0x08000000 /* audit the looked up vnode information */
#define TRAILINGSLASH 0x10000000 /* path ended in a slash */
#define PARAMASK 0x1ffffe00 /* mask of parameter descriptors */
#define NDHASGIANT(NDP) (((NDP)->ni_cnd.cn_flags & GIANTHELD) != 0)
/*
* Initialization of a nameidata structure.
*/

14
sys/ufs/ffs/ffs_alloc.c
View File

@ -2465,7 +2465,7 @@ sysctl_ffs_fsck(SYSCTL_HANDLER_ARGS)
long blkcnt, blksize;
struct filedesc *fdp;
struct file *fp, *vfp;
int vfslocked, filetype, error;
int filetype, error;
static struct fileops *origops, bufferedops;
if (req->newlen > sizeof cmd)
@ -2670,23 +2670,18 @@ sysctl_ffs_fsck(SYSCTL_HANDLER_ARGS)
#endif /* DEBUG */
if ((error = ffs_vget(mp, (ino_t)cmd.value, LK_SHARED, &vp)))
break;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
AUDIT_ARG_VNODE1(vp);
if ((error = change_dir(vp, td)) != 0) {
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
break;
}
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdp = td->td_proc->p_fd;
FILEDESC_XLOCK(fdp);
vpold = fdp->fd_cdir;
fdp->fd_cdir = vp;
FILEDESC_XUNLOCK(fdp);
vfslocked = VFS_LOCK_GIANT(vpold->v_mount);
vrele(vpold);
VFS_UNLOCK_GIANT(vfslocked);
break;
case FFS_SET_DOTDOT:
@ -2759,7 +2754,6 @@ sysctl_ffs_fsck(SYSCTL_HANDLER_ARGS)
#endif /* DEBUG */
if ((error = ffs_vget(mp, (ino_t)cmd.value, LK_EXCLUSIVE, &vp)))
break;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
AUDIT_ARG_VNODE1(vp);
ip = VTOI(vp);
if (ip->i_ump->um_fstype == UFS1)
@ -2770,13 +2764,11 @@ sysctl_ffs_fsck(SYSCTL_HANDLER_ARGS)
sizeof(struct ufs2_dinode));
if (error) {
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
break;
}
ip->i_flag |= IN_CHANGE | IN_MODIFIED;
error = ffs_update(vp, 1);
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
break;
case FFS_SET_BUFOUTPUT:
@ -2853,7 +2845,7 @@ buffered_write(fp, uio, active_cred, flags, td)
struct inode *ip;
struct buf *bp;
struct fs *fs;
int error, vfslocked;
int error;
daddr_t lbn;
/*
@ -2868,7 +2860,6 @@ buffered_write(fp, uio, active_cred, flags, td)
return (EINVAL);
fs = ip->i_fs;
foffset_lock_uio(fp, uio, flags);
vfslocked = VFS_LOCK_GIANT(ip->i_vnode->v_mount);
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
#ifdef DEBUG
if (fsckcmds) {
@ -2896,7 +2887,6 @@ buffered_write(fp, uio, active_cred, flags, td)
error = bwrite(bp);
out:
VOP_UNLOCK(devvp, 0);
VFS_UNLOCK_GIANT(vfslocked);
foffset_unlock_uio(fp, uio, flags | FOF_NEXTOFF);
return (error);
}

5
sys/ufs/ffs/ffs_softdep.c
View File

@ -1338,14 +1338,12 @@ softdep_flush(void)
struct thread *td;
int remaining;
int progress;
int vfslocked;
td = curthread;
td->td_pflags |= TDP_NORUNNINGBUF;
for (;;) {
kproc_suspend_check(softdepproc);
vfslocked = VFS_LOCK_GIANT((struct mount *)NULL);
ACQUIRE_LOCK(&lk);
/*
* If requested, try removing inode or removal dependencies.
@ -1361,7 +1359,6 @@ softdep_flush(void)
wakeup_one(&proc_waiting);
}
FREE_LOCK(&lk);
VFS_UNLOCK_GIANT(vfslocked);
remaining = progress = 0;
mtx_lock(&mountlist_mtx);
for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
@ -1370,11 +1367,9 @@ softdep_flush(void)
continue;
if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK))
continue;
vfslocked = VFS_LOCK_GIANT(mp);
progress += softdep_process_worklist(mp, 0);
ump = VFSTOUFS(mp);
remaining += ump->softdep_on_worklist;
VFS_UNLOCK_GIANT(vfslocked);
mtx_lock(&mountlist_mtx);
nmp = TAILQ_NEXT(mp, mnt_list);
vfs_unbusy(mp);

29
sys/ufs/ufs/ufs_quota.c
View File

@ -497,7 +497,7 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
struct vnode *vp, **vpp;
struct vnode *mvp;
struct dquot *dq;
int error, flags, vfslocked;
int error, flags;
struct nameidata nd;
error = priv_check(td, PRIV_UFS_QUOTAON);
@ -510,7 +510,7 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
ump = VFSTOUFS(mp);
dq = NODQUOT;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, fname, td);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, fname, td);
flags = FREAD | FWRITE;
vfs_ref(mp);
vfs_unbusy(mp);
@ -519,7 +519,6 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
vfs_rel(mp);
return (error);
}
vfslocked = NDHASGIANT(&nd);
NDFREE(&nd, NDF_ONLY_PNBUF);
vp = nd.ni_vp;
error = vfs_busy(mp, MBF_NOWAIT);
@ -533,7 +532,6 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
if (error != 0) {
VOP_UNLOCK(vp, 0);
(void) vn_close(vp, FREAD|FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -542,7 +540,6 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
UFS_UNLOCK(ump);
VOP_UNLOCK(vp, 0);
(void) vn_close(vp, FREAD|FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
vfs_unbusy(mp);
return (EALREADY);
}
@ -554,7 +551,6 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
ump->um_qflags[type] &= ~(QTF_OPENING|QTF_CLOSING);
UFS_UNLOCK(ump);
(void) vn_close(vp, FREAD|FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
vfs_unbusy(mp);
return (error);
}
@ -571,7 +567,6 @@ quotaon(struct thread *td, struct mount *mp, int type, void *fname)
vp->v_vflag |= VV_SYSTEM;
VOP_UNLOCK(vp, 0);
*vpp = vp;
VFS_UNLOCK_GIANT(vfslocked);
/*
* Save the credential of the process that turned on quotas.
* Set up the time limits for this quota.
@ -643,7 +638,6 @@ quotaoff1(struct thread *td, struct mount *mp, int type)
struct dquot *dq;
struct inode *ip;
struct ucred *cr;
int vfslocked;
int error;
ump = VFSTOUFS(mp);
@ -689,12 +683,10 @@ quotaoff1(struct thread *td, struct mount *mp, int type)
ump->um_cred[type] = NOCRED;
UFS_UNLOCK(ump);
vfslocked = VFS_LOCK_GIANT(qvp->v_mount);
vn_lock(qvp, LK_EXCLUSIVE | LK_RETRY);
qvp->v_vflag &= ~VV_SYSTEM;
VOP_UNLOCK(qvp, 0);
error = vn_close(qvp, FREAD|FWRITE, td->td_ucred, td);
VFS_UNLOCK_GIANT(vfslocked);
crfree(cr);
return (error);
@ -1246,7 +1238,7 @@ dqget(struct vnode *vp, u_long id, struct ufsmount *ump, int type,
struct vnode *dqvp;
struct iovec aiov;
struct uio auio;
int vfslocked, dqvplocked, error;
int dqvplocked, error;
#ifdef DEBUG_VFS_LOCKS
if (vp != NULLVP)
@ -1292,12 +1284,10 @@ hfound: DQI_LOCK(dq);
error = EIO;
}
*dqp = dq;
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
if (dqvplocked)
vput(dqvp);
else
vrele(dqvp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}
@ -1350,12 +1340,10 @@ hfound: DQI_LOCK(dq);
DQH_UNLOCK();
tablefull("dquot");
*dqp = NODQUOT;
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
if (dqvplocked)
vput(dqvp);
else
vrele(dqvp);
VFS_UNLOCK_GIANT(vfslocked);
return (EUSERS);
}
if (dq->dq_cnt || (dq->dq_flags & DQ_MOD))
@ -1398,7 +1386,6 @@ hfound: DQI_LOCK(dq);
auio.uio_rw = UIO_READ;
auio.uio_td = (struct thread *)0;
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
error = VOP_READ(dqvp, &auio, 0, ump->um_cred[type]);
if (auio.uio_resid == recsize && error == 0) {
bzero(&dq->dq_dqb, sizeof(dq->dq_dqb));
@ -1412,7 +1399,6 @@ hfound: DQI_LOCK(dq);
vput(dqvp);
else
vrele(dqvp);
VFS_UNLOCK_GIANT(vfslocked);
/*
* I/O error in reading quota file, release
* quota structure and reflect problem to caller.
@ -1525,7 +1511,7 @@ dqsync(struct vnode *vp, struct dquot *dq)
struct vnode *dqvp;
struct iovec aiov;
struct uio auio;
int vfslocked, error;
int error;
struct mount *mp;
struct ufsmount *ump;
@ -1546,12 +1532,10 @@ dqsync(struct vnode *vp, struct dquot *dq)
vref(dqvp);
UFS_UNLOCK(ump);
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
DQI_LOCK(dq);
if ((dq->dq_flags & DQ_MOD) == 0) {
DQI_UNLOCK(dq);
vrele(dqvp);
VFS_UNLOCK_GIANT(vfslocked);
return (0);
}
DQI_UNLOCK(dq);
@ -1560,7 +1544,6 @@ dqsync(struct vnode *vp, struct dquot *dq)
if (vp != dqvp)
vn_lock(dqvp, LK_EXCLUSIVE | LK_RETRY);
VFS_UNLOCK_GIANT(vfslocked);
DQI_LOCK(dq);
DQI_WAIT(dq, PINOD+2, "dqsync");
if ((dq->dq_flags & DQ_MOD) == 0)
@ -1591,9 +1574,7 @@ dqsync(struct vnode *vp, struct dquot *dq)
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_WRITE;
auio.uio_td = (struct thread *)0;
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
error = VOP_WRITE(dqvp, &auio, 0, dq->dq_ump->um_cred[dq->dq_type]);
VFS_UNLOCK_GIANT(vfslocked);
if (auio.uio_resid && error == 0)
error = EIO;
@ -1602,13 +1583,11 @@ dqsync(struct vnode *vp, struct dquot *dq)
dq->dq_flags &= ~DQ_MOD;
out:
DQI_UNLOCK(dq);
vfslocked = VFS_LOCK_GIANT(dqvp->v_mount);
if (vp != dqvp)
vput(dqvp);
else
vrele(dqvp);
vn_finished_secondary_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

21
sys/vm/vm_fault.c
View File

@ -102,8 +102,6 @@ __FBSDID("$FreeBSD$");
#include <vm/vm_pager.h>
#include <vm/vm_extern.h>
#include <sys/mount.h> /* XXX Temporary for VFS_LOCK_GIANT() */
#define PFBAK 4
#define PFFOR 4
#define PAGEORDER_SIZE (PFBAK+PFFOR)
@ -135,7 +133,6 @@ struct faultstate {
vm_map_entry_t entry;
int lookup_still_valid;
struct vnode *vp;
int vfslocked;
};
static void vm_fault_cache_behind(const struct faultstate *fs, int distance);
@ -182,8 +179,6 @@ unlock_and_deallocate(struct faultstate *fs)
vput(fs->vp);
fs->vp = NULL;
}
VFS_UNLOCK_GIANT(fs->vfslocked);
fs->vfslocked = 0;
}
/*
@ -255,7 +250,6 @@ vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
growstack = TRUE;
PCPU_INC(cnt.v_vm_faults);
fs.vp = NULL;
fs.vfslocked = 0;
faultcount = reqpage = 0;
RetryFault:;
@ -513,7 +507,6 @@ RetryFault:;
*/
unlock_map(&fs);
vnode_lock:
if (fs.object->type == OBJT_VNODE) {
vp = fs.object->handle;
if (vp == fs.vp)
@ -524,25 +517,12 @@ RetryFault:;
}
locked = VOP_ISLOCKED(vp);
if (VFS_NEEDSGIANT(vp->v_mount) && !fs.vfslocked) {
fs.vfslocked = 1;
if (!mtx_trylock(&Giant)) {
VM_OBJECT_UNLOCK(fs.object);
mtx_lock(&Giant);
VM_OBJECT_LOCK(fs.object);
goto vnode_lock;
}
}
if (locked != LK_EXCLUSIVE)
locked = LK_SHARED;
/* Do not sleep for vnode lock while fs.m is busy */
error = vget(vp, locked | LK_CANRECURSE |
LK_NOWAIT, curthread);
if (error != 0) {
int vfslocked;
vfslocked = fs.vfslocked;
fs.vfslocked = 0; /* Keep Giant */
vhold(vp);
release_page(&fs);
unlock_and_deallocate(&fs);
@ -550,7 +530,6 @@ RetryFault:;
LK_CANRECURSE, curthread);
vdrop(vp);
fs.vp = vp;
fs.vfslocked = vfslocked;
KASSERT(error == 0,
("vm_fault: vget failed"));
goto RetryFault;

12
sys/vm/vm_mmap.c
View File

@ -1256,7 +1256,7 @@ vm_mmap_vnode(struct thread *td, vm_size_t objsize,
vm_offset_t foff;
struct mount *mp;
struct ucred *cred;
int error, flags, locktype, vfslocked;
int error, flags, locktype;
mp = vp->v_mount;
cred = td->td_ucred;
@ -1264,11 +1264,8 @@ vm_mmap_vnode(struct thread *td, vm_size_t objsize,
locktype = LK_EXCLUSIVE;
else
locktype = LK_SHARED;
vfslocked = VFS_LOCK_GIANT(mp);
if ((error = vget(vp, locktype, td)) != 0) {
VFS_UNLOCK_GIANT(vfslocked);
if ((error = vget(vp, locktype, td)) != 0)
return (error);
}
foff = *foffp;
flags = *flagsp;
obj = vp->v_object;
@ -1288,10 +1285,8 @@ vm_mmap_vnode(struct thread *td, vm_size_t objsize,
* underlying fs.
*/
error = vget(vp, locktype, td);
if (error != 0) {
VFS_UNLOCK_GIANT(vfslocked);
if (error != 0)
return (error);
}
}
if (locktype == LK_EXCLUSIVE) {
*writecounted = TRUE;
@ -1344,7 +1339,6 @@ vm_mmap_vnode(struct thread *td, vm_size_t objsize,
done:
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
return (error);
}

33
sys/vm/vm_object.c
View File

@ -427,7 +427,6 @@ vm_object_vndeallocate(vm_object_t object)
{
struct vnode *vp = (struct vnode *) object->handle;
VFS_ASSERT_GIANT(vp->v_mount);
VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
KASSERT(object->type == OBJT_VNODE,
("vm_object_vndeallocate: not a vnode object"));
@ -480,38 +479,11 @@ vm_object_deallocate(vm_object_t object)
vm_object_t temp;
while (object != NULL) {
int vfslocked;
vfslocked = 0;
restart:
VM_OBJECT_LOCK(object);
if (object->type == OBJT_VNODE) {
struct vnode *vp = (struct vnode *) object->handle;
/*
* Conditionally acquire Giant for a vnode-backed
* object. We have to be careful since the type of
* a vnode object can change while the object is
* unlocked.
*/
if (VFS_NEEDSGIANT(vp->v_mount) && !vfslocked) {
vfslocked = 1;
if (!mtx_trylock(&Giant)) {
VM_OBJECT_UNLOCK(object);
mtx_lock(&Giant);
goto restart;
}
}
vm_object_vndeallocate(object);
VFS_UNLOCK_GIANT(vfslocked);
return;
} else
/*
* This is to handle the case that the object
* changed type while we dropped its lock to
* obtain Giant.
*/
VFS_UNLOCK_GIANT(vfslocked);
}
KASSERT(object->ref_count != 0,
("vm_object_deallocate: object deallocated too many times: %d", object->type));
@ -987,11 +959,9 @@ vm_object_sync(vm_object_t object, vm_ooffset_t offset, vm_size_t size,
*/
if (object->type == OBJT_VNODE &&
(object->flags & OBJ_MIGHTBEDIRTY) != 0) {
int vfslocked;
vp = object->handle;
VM_OBJECT_UNLOCK(object);
(void) vn_start_write(vp, &mp, V_WAIT);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
if (syncio && !invalidate && offset == 0 &&
OFF_TO_IDX(size) == object->size) {
@ -1015,7 +985,6 @@ vm_object_sync(vm_object_t object, vm_ooffset_t offset, vm_size_t size,
if (fsync_after)
error = VOP_FSYNC(vp, MNT_WAIT, curthread);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
vn_finished_write(mp);
if (error != 0)
res = FALSE;

7
sys/vm/vm_pageout.c
View File

@ -569,7 +569,6 @@ vm_pageout_launder(int queue, int tries, vm_paddr_t low, vm_paddr_t high)
vm_object_t object;
vm_paddr_t pa;
vm_page_t m, m_tmp, next;
int vfslocked;
vm_page_lock_queues();
TAILQ_FOREACH_SAFE(m, &vm_page_queues[queue].pl, pageq, next) {
@ -609,13 +608,11 @@ vm_pageout_launder(int queue, int tries, vm_paddr_t low, vm_paddr_t high)
vm_object_reference_locked(object);
VM_OBJECT_UNLOCK(object);
(void)vn_start_write(vp, &mp, V_WAIT);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
VM_OBJECT_LOCK(object);
vm_object_page_clean(object, 0, 0, OBJPC_SYNC);
VM_OBJECT_UNLOCK(object);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
vm_object_deallocate(object);
vn_finished_write(mp);
return (TRUE);
@ -1127,7 +1124,7 @@ vm_pageout_scan(int pass)
* pressure where there are insufficient clean pages
* on the inactive queue, we may have to go all out.
*/
int swap_pageouts_ok, vfslocked = 0;
int swap_pageouts_ok;
struct vnode *vp = NULL;
struct mount *mp = NULL;
@ -1191,7 +1188,6 @@ vm_pageout_scan(int pass)
("vp %p with NULL v_mount", vp));
vm_object_reference_locked(object);
VM_OBJECT_UNLOCK(object);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vget(vp, LK_EXCLUSIVE | LK_TIMELOCK,
curthread)) {
VM_OBJECT_LOCK(object);
@ -1270,7 +1266,6 @@ vm_pageout_scan(int pass)
}
if (vp != NULL)
vput(vp);
VFS_UNLOCK_GIANT(vfslocked);
vm_object_deallocate(object);
vn_finished_write(mp);
}

9
sys/vm/vnode_pager.c
View File

@ -298,7 +298,6 @@ vnode_pager_haspage(object, pindex, before, after)
int poff;
int bsize;
int pagesperblock, blocksperpage;
int vfslocked;
VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
/*
@ -324,9 +323,7 @@ vnode_pager_haspage(object, pindex, before, after)
reqblock = pindex * blocksperpage;
}
VM_OBJECT_UNLOCK(object);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
err = VOP_BMAP(vp, reqblock, NULL, &bn, after, before);
VFS_UNLOCK_GIANT(vfslocked);
VM_OBJECT_LOCK(object);
if (err)
return TRUE;
@ -670,15 +667,12 @@ vnode_pager_getpages(object, m, count, reqpage)
int rtval;
struct vnode *vp;
int bytes = count * PAGE_SIZE;
int vfslocked;
vp = object->handle;
VM_OBJECT_UNLOCK(object);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
rtval = VOP_GETPAGES(vp, m, bytes, reqpage, 0);
KASSERT(rtval != EOPNOTSUPP,
("vnode_pager: FS getpages not implemented\n"));
VFS_UNLOCK_GIANT(vfslocked);
VM_OBJECT_LOCK(object);
return rtval;
}
@ -1237,7 +1231,6 @@ vnode_pager_release_writecount(vm_object_t object, vm_offset_t start,
struct vnode *vp;
struct mount *mp;
vm_offset_t inc;
int vfslocked;
VM_OBJECT_LOCK(object);
@ -1264,7 +1257,6 @@ vnode_pager_release_writecount(vm_object_t object, vm_offset_t start,
vp = object->handle;
vhold(vp);
VM_OBJECT_UNLOCK(object);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
mp = NULL;
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
@ -1280,5 +1272,4 @@ vnode_pager_release_writecount(vm_object_t object, vm_offset_t start,
vdrop(vp);
if (mp != NULL)
vn_finished_write(mp);
VFS_UNLOCK_GIANT(vfslocked);
}