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- Since we don't hold a usecount in pfs_exit we have to get a holdcnt

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prior to calling vgone() to prevent any races.

Sponsored by:	Isilon Systems, Inc.
Approved by:	re (vfs blanket)
This commit is contained in:
Jeff Roberson 2005-07-07 07:33:10 +00:00
parent c687e6de5b
commit 8b3676f1a1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=147809
1 changed files with 4 additions and 0 deletions
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4
sys/fs/pseudofs/pseudofs_vncache.c
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@ -250,10 +250,12 @@ pfs_exit(void *arg, struct proc *p)
while (pvd != NULL) {
if (pvd->pvd_pid == p->p_pid) {
vnp = pvd->pvd_vnode;
vhold(vnp);
mtx_unlock(&pfs_vncache_mutex);
VOP_LOCK(vnp, LK_EXCLUSIVE, curthread);
vgone(vnp);
VOP_UNLOCK(vnp, 0, curthread);
vdrop(vnp);
mtx_lock(&pfs_vncache_mutex);
pvd = pfs_vncache;
} else {
@ -282,10 +284,12 @@ pfs_disable(struct pfs_node *pn)
while (pvd != NULL) {
if (pvd->pvd_pn == pn) {
vnp = pvd->pvd_vnode;
vhold(vnp);
mtx_unlock(&pfs_vncache_mutex);
VOP_LOCK(vnp, LK_EXCLUSIVE, curthread);
vgone(vnp);
VOP_UNLOCK(vnp, 0, curthread);
vdrop(vnp);
mtx_lock(&pfs_vncache_mutex);
pvd = pfs_vncache;
} else {