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- Add a 'flags' parameter to VFS_ROOT(). This is intended to allow

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lookup to do shared locks on the root.  Filesystems are free to ignore
   flags and instead acquire an exclusive lock if they do not support
   shared locks.

Sponsored by:	Isilon Systems, Inc.
This commit is contained in:
Jeff Roberson 2005-03-24 07:29:23 +00:00
parent 5d14d29912
commit 35f19cdc6c
1 changed files with 4 additions and 2 deletions
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6
sys/sys/mount.h
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@ -466,7 +466,8 @@ struct mntarg;
typedef int vfs_cmount_t(struct mntarg *ma, void *data, int flags, struct thread *td);
typedef int vfs_unmount_t(struct mount *mp, int mntflags, struct thread *td);
typedef int vfs_root_t(struct mount *mp, struct vnode **vpp, struct thread *td);
typedef int vfs_root_t(struct mount *mp, int flags, struct vnode **vpp,
struct thread *td);
typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid,
caddr_t arg, struct thread *td);
typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
@ -509,7 +510,8 @@ vfs_statfs_t __vfs_statfs;
#define VFS_MOUNT(MP, P) (*(MP)->mnt_op->vfs_mount)(MP, P)
#define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
#define VFS_ROOT(MP, VPP, P) (*(MP)->mnt_op->vfs_root)(MP, VPP, P)
#define VFS_ROOT(MP, FLAGS, VPP, P) \
(*(MP)->mnt_op->vfs_root)(MP, FLAGS, VPP, P)
#define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
#define VFS_STATFS(MP, SBP, P) __vfs_statfs((MP), (SBP), (P))
#define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P)