d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Only unlock if the lock is exclusive.

Browse Source 
Reported by:	Subbsd <subbsd gmail com>
Discussed with:	kib
This commit is contained in:
Peter Holm 2011-10-24 10:35:37 +00:00
parent c779dc1485
commit 9ce7379778
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/fs/nullfs/null_vfsops.c
View File

@ -104,11 +104,10 @@ nullfs_mount(struct mount *mp)
return (EINVAL);
/*
* Unlock lower node to avoid deadlock.
* (XXX) VOP_ISLOCKED is needed?
* Unlock lower node to avoid possible deadlock.
*/
if ((mp->mnt_vnodecovered->v_op == &null_vnodeops) &&
VOP_ISLOCKED(mp->mnt_vnodecovered)) {
VOP_ISLOCKED(mp->mnt_vnodecovered) == LK_EXCLUSIVE) {
VOP_UNLOCK(mp->mnt_vnodecovered, 0);
isvnunlocked = 1;
}