diff options
author | Jeff Roberson <jeff@FreeBSD.org> | 2002-08-04 10:29:36 +0000 |
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committer | Jeff Roberson <jeff@FreeBSD.org> | 2002-08-04 10:29:36 +0000 |
commit | e6e370a7fe930e04cec38bcc2e06be127ed7ee02 (patch) | |
tree | e889f56910bf98cbee3be239655a9e4bbb928b2e /sys/kern/vfs_cache.c | |
parent | f75bb0aa25847511ed461bccb4d3fc247ab6b1d5 (diff) | |
download | src-e6e370a7fe930e04cec38bcc2e06be127ed7ee02.tar.gz src-e6e370a7fe930e04cec38bcc2e06be127ed7ee02.zip |
- Replace v_flag with v_iflag and v_vflag
- v_vflag is protected by the vnode lock and is used when synchronization
with VOP calls is needed.
- v_iflag is protected by interlock and is used for dealing with vnode
management issues. These flags include X/O LOCK, FREE, DOOMED, etc.
- All accesses to v_iflag and v_vflag have either been locked or marked with
mp_fixme's.
- Many ASSERT_VOP_LOCKED calls have been added where the locking was not
clear.
- Many functions in vfs_subr.c were restructured to provide for stronger
locking.
Idea stolen from: BSD/OS
Notes
Notes:
svn path=/head/; revision=101308
Diffstat (limited to 'sys/kern/vfs_cache.c')
-rw-r--r-- | sys/kern/vfs_cache.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index be79fc2756af..6e68c2f9b963 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -726,8 +726,9 @@ __getcwd(td, uap) fdp = td->td_proc->p_fd; slash_prefixed = 0; FILEDESC_LOCK(fdp); + mp_fixme("No vnode locking done!"); for (vp = fdp->fd_cdir; vp != fdp->fd_rdir && vp != rootvnode;) { - if (vp->v_flag & VROOT) { + if (vp->v_vflag & VV_ROOT) { if (vp->v_mount == NULL) { /* forced unmount */ FILEDESC_UNLOCK(fdp); free(buf, M_TEMP); @@ -827,6 +828,7 @@ vn_fullpath(struct thread *td, struct vnode *vn, char **retbuf, char **freebuf) return (ENODEV); if (vn == NULL) return (EINVAL); + ASSERT_VOP_LOCKED(vp, "vn_fullpath"); buf = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); bp = buf + MAXPATHLEN - 1; *bp = '\0'; @@ -834,7 +836,7 @@ vn_fullpath(struct thread *td, struct vnode *vn, char **retbuf, char **freebuf) slash_prefixed = 0; FILEDESC_LOCK(fdp); for (vp = vn; vp != fdp->fd_rdir && vp != rootvnode;) { - if (vp->v_flag & VROOT) { + if (vp->v_vflag & VV_ROOT) { if (vp->v_mount == NULL) { /* forced unmount */ FILEDESC_UNLOCK(fdp); free(buf, M_TEMP); |