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Make VOP_BMAP return a struct bufobj for the underlying storage device

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instead of a vnode for it.

The vnode_pager does not and should not have any interest in what
the filesystem uses for backend.

(vfs_cluster doesn't use the backing store argument.)
This commit is contained in:
Poul-Henning Kamp 2004-11-15 09:18:27 +00:00
parent 5c6e573ffb
commit 9c83534dd8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=137726
15 changed files with 53 additions and 51 deletions
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8
sys/coda/coda_vnops.c
View File

@ -1679,7 +1679,7 @@ coda_bmap(v)
struct vop_bmap_args *ap = v;
struct vnode *vp __attribute__((unused)) = ap->a_vp; /* file's vnode */
daddr_t bn __attribute__((unused)) = ap->a_bn; /* fs block number */
struct vnode **vpp = ap->a_vpp; /* RETURN vp of device */
struct bufobj **bop = ap->a_bop; /* RETURN bufobj of device */
daddr_t *bnp __attribute__((unused)) = ap->a_bnp; /* RETURN device block number */
struct thread *td __attribute__((unused)) = curthread;
/* upcall decl */
@ -1691,10 +1691,10 @@ coda_bmap(v)
cp = VTOC(vp);
if (cp->c_ovp) {
return EINVAL;
ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb);
ret = VOP_BMAP(cp->c_ovp, bn, bop, bnp, ap->a_runp, ap->a_runb);
#if 0
printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %lld, ap->a_runp %p, ap->a_runb %p) = %d\n",
cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret);
printf("VOP_BMAP(cp->c_ovp %p, bn %p, bop %p, bnp %lld, ap->a_runp %p, ap->a_runb %p) = %d\n",
cp->c_ovp, bn, bop, bnp, ap->a_runp, ap->a_runb, ret);
#endif
return ret;
} else {

6
sys/fs/cd9660/cd9660_bmap.c
View File

@ -55,7 +55,7 @@ cd9660_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -69,8 +69,8 @@ cd9660_bmap(ap)
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = ip->i_mnt->im_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &ip->i_mnt->im_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);

8
sys/fs/coda/coda_vnops.c
View File

@ -1679,7 +1679,7 @@ coda_bmap(v)
struct vop_bmap_args *ap = v;
struct vnode *vp __attribute__((unused)) = ap->a_vp; /* file's vnode */
daddr_t bn __attribute__((unused)) = ap->a_bn; /* fs block number */
struct vnode **vpp = ap->a_vpp; /* RETURN vp of device */
struct bufobj **bop = ap->a_bop; /* RETURN bufobj of device */
daddr_t *bnp __attribute__((unused)) = ap->a_bnp; /* RETURN device block number */
struct thread *td __attribute__((unused)) = curthread;
/* upcall decl */
@ -1691,10 +1691,10 @@ coda_bmap(v)
cp = VTOC(vp);
if (cp->c_ovp) {
return EINVAL;
ret = VOP_BMAP(cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb);
ret = VOP_BMAP(cp->c_ovp, bn, bop, bnp, ap->a_runp, ap->a_runb);
#if 0
printf("VOP_BMAP(cp->c_ovp %p, bn %p, vpp %p, bnp %lld, ap->a_runp %p, ap->a_runb %p) = %d\n",
cp->c_ovp, bn, vpp, bnp, ap->a_runp, ap->a_runb, ret);
printf("VOP_BMAP(cp->c_ovp %p, bn %p, bop %p, bnp %lld, ap->a_runp %p, ap->a_runb %p) = %d\n",
cp->c_ovp, bn, bop, bnp, ap->a_runp, ap->a_runb, ret);
#endif
return ret;
} else {

4
sys/fs/deadfs/dead_vnops.c
View File

@ -220,7 +220,7 @@ dead_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -229,7 +229,7 @@ dead_bmap(ap)
if (!chkvnlock(ap->a_vp))
return (EIO);
return (VOP_BMAP(ap->a_vp, ap->a_bn, ap->a_vpp, ap->a_bnp, ap->a_runp, ap->a_runb));
return (VOP_BMAP(ap->a_vp, ap->a_bn, ap->a_bop, ap->a_bnp, ap->a_runp, ap->a_runb));
}
/*

6
sys/fs/hpfs/hpfs_vnops.c
View File

@ -240,7 +240,7 @@ hpfs_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -250,8 +250,8 @@ hpfs_bmap(ap)
daddr_t blkno;
int error;
if (ap->a_vpp != NULL)
*ap->a_vpp = hp->h_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &hp->h_devvp->v_bufobj;
if (ap->a_runb != NULL)
*ap->a_runb = 0;
if (ap->a_bnp == NULL)

6
sys/fs/msdosfs/msdosfs_vnops.c
View File

@ -1736,7 +1736,7 @@ msdosfs_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -1746,8 +1746,8 @@ msdosfs_bmap(ap)
daddr_t blkno;
int error;
if (ap->a_vpp != NULL)
*ap->a_vpp = dep->de_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &dep->de_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);
if (ap->a_runp) {

6
sys/fs/ntfs/ntfs_vnops.c
View File

@ -91,15 +91,15 @@ ntfs_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
} */ *ap;
{
dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
if (ap->a_vpp != NULL)
*ap->a_vpp = ap->a_vp;
if (ap->a_bop != NULL)
*ap->a_bop = &ap->a_vp->v_bufobj;
if (ap->a_bnp != NULL)
*ap->a_bnp = ap->a_bn;
if (ap->a_runp != NULL)

4
sys/fs/udf/udf_vnops.c
View File

@ -867,8 +867,8 @@ udf_bmap(struct vop_bmap_args *a)
node = VTON(a->a_vp);
if (a->a_vpp != NULL)
*a->a_vpp = node->i_devvp;
if (a->a_bop != NULL)
*a->a_bop = &node->i_devvp->v_bufobj;
if (a->a_bnp == NULL)
return (0);
if (a->a_runb)

6
sys/gnu/ext2fs/ext2_bmap.c
View File

@ -61,7 +61,7 @@ ext2_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -74,8 +74,8 @@ ext2_bmap(ap)
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = VTOI(ap->a_vp)->i_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &VTOI(ap->a_vp)->i_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);

6
sys/gnu/fs/ext2fs/ext2_bmap.c
View File

@ -61,7 +61,7 @@ ext2_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -74,8 +74,8 @@ ext2_bmap(ap)
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = VTOI(ap->a_vp)->i_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &VTOI(ap->a_vp)->i_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);

6
sys/isofs/cd9660/cd9660_bmap.c
View File

@ -55,7 +55,7 @@ cd9660_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -69,8 +69,8 @@ cd9660_bmap(ap)
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = ip->i_mnt->im_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &ip->i_mnt->im_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);

6
sys/kern/vfs_default.c
View File

@ -508,15 +508,15 @@ vop_stdbmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
} */ *ap;
{
if (ap->a_vpp != NULL)
*ap->a_vpp = ap->a_vp;
if (ap->a_bop != NULL)
*ap->a_bop = &ap->a_vp->v_bufobj;
if (ap->a_bnp != NULL)
*ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
if (ap->a_runp != NULL)

3
sys/kern/vnode_if.src
View File

@ -382,12 +382,11 @@ vop_unlock {
#
#% bmap vp L L L
#% bmap vpp - U -
#
vop_bmap {
IN struct vnode *vp;
IN daddr_t bn;
OUT struct vnode **vpp;
OUT struct bufobj **bop;
IN daddr_t *bnp;
OUT int *runp;
OUT int *runb;

6
sys/ufs/ufs/ufs_bmap.c
View File

@ -63,7 +63,7 @@ ufs_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
struct bufobj **a_bop;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
@ -76,8 +76,8 @@ ufs_bmap(ap)
* Check for underlying vnode requests and ensure that logical
* to physical mapping is requested.
*/
if (ap->a_vpp != NULL)
*ap->a_vpp = VTOI(ap->a_vp)->i_devvp;
if (ap->a_bop != NULL)
*ap->a_bop = &VTOI(ap->a_vp)->i_devvp->v_bufobj;
if (ap->a_bnp == NULL)
return (0);

23
sys/vm/vnode_pager.c
View File

@ -433,7 +433,8 @@ vnode_pager_input_smlfs(object, m)
vm_page_t m;
{
int i;
struct vnode *dp, *vp;
struct vnode *vp;
struct bufobj *bo;
struct buf *bp;
struct sf_buf *sf;
int fileaddr;
@ -448,7 +449,7 @@ vnode_pager_input_smlfs(object, m)
bsize = vp->v_mount->mnt_stat.f_iosize;
VOP_BMAP(vp, 0, &dp, 0, NULL, NULL);
VOP_BMAP(vp, 0, &bo, 0, NULL, NULL);
sf = sf_buf_alloc(m, 0);
@ -476,7 +477,7 @@ vnode_pager_input_smlfs(object, m)
bp->b_wcred = crhold(curthread->td_ucred);
bp->b_data = (caddr_t)sf_buf_kva(sf) + i * bsize;
bp->b_blkno = fileaddr;
pbgetvp(dp, bp);
pbgetbo(bo, bp);
bp->b_bcount = bsize;
bp->b_bufsize = bsize;
bp->b_runningbufspace = bp->b_bufsize;
@ -496,7 +497,7 @@ vnode_pager_input_smlfs(object, m)
/*
* free the buffer header back to the swap buffer pool
*/
pbrelvp(bp);
pbrelbo(bp);
relpbuf(bp, &vnode_pbuf_freecnt);
if (error)
break;
@ -645,7 +646,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
vm_offset_t kva;
off_t foff, tfoff, nextoff;
int i, j, size, bsize, first, firstaddr;
struct vnode *dp;
struct bufobj *bo;
int runpg;
int runend;
struct buf *bp;
@ -656,6 +657,8 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
object = vp->v_object;
count = bytecount / PAGE_SIZE;
KASSERT(vp->v_type != VCHR && vp->v_type != VBLK,
("vnode_pager_generic_getpages does not support devices"));
if (vp->v_mount == NULL)
return VM_PAGER_BAD;
@ -672,7 +675,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
/*
* if we can't bmap, use old VOP code
*/
if (VOP_BMAP(vp, 0, &dp, 0, NULL, NULL)) {
if (VOP_BMAP(vp, 0, &bo, 0, NULL, NULL)) {
VM_OBJECT_LOCK(object);
vm_page_lock_queues();
for (i = 0; i < count; i++)
@ -803,8 +806,8 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
/*
* round up physical size for real devices.
*/
if (dp->v_type == VBLK || dp->v_type == VCHR) {
int secmask = dp->v_bufobj.bo_bsize - 1;
if (1) {
int secmask = bo->bo_bsize - 1;
KASSERT(secmask < PAGE_SIZE && secmask > 0,
("vnode_pager_generic_getpages: sector size %d too large",
secmask + 1));
@ -827,7 +830,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
bp->b_rcred = crhold(curthread->td_ucred);
bp->b_wcred = crhold(curthread->td_ucred);
bp->b_blkno = firstaddr;
pbgetvp(dp, bp);
pbgetbo(bo, bp);
bp->b_bcount = size;
bp->b_bufsize = size;
bp->b_runningbufspace = bp->b_bufsize;
@ -854,7 +857,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
/*
* free the buffer header back to the swap buffer pool
*/
pbrelvp(bp);
pbrelbo(bp);
relpbuf(bp, &vnode_pbuf_freecnt);
VM_OBJECT_LOCK(object);