diff options
| author | jeff <jeff@FreeBSD.org> | 2002-08-04 10:29:36 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2002-08-04 10:29:36 +0000 |
| commit | 02517b6731ab2da44ce9b49260429744cf0114d5 (patch) | |
| tree | e889f56910bf98cbee3be239655a9e4bbb928b2e /sys/kern/vfs_cache.c | |
| parent | a03ca02ee99a255a2c14a75ff8eb488960b13ea7 (diff) | |
| download | FreeBSD-src-02517b6731ab2da44ce9b49260429744cf0114d5.zip FreeBSD-src-02517b6731ab2da44ce9b49260429744cf0114d5.tar.gz | |
- 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
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 be79fc2..6e68c2f 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); |
