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

Force nullfs vnode reclaim after unlinking, to potentially unlink

Browse Source 
lower vnode.  Otherwise, reference to the lower vnode from the upper
one prevents final unlink.

PR:	178238
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2015-12-30 19:49:22 +00:00
parent 258527a372
commit 6f73b583d9
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/fs/nullfs/null_vnops.c
View File

@ -568,14 +568,16 @@ static int
null_remove(struct vop_remove_args *ap)
{
int retval, vreleit;
struct vnode *lvp;
struct vnode *lvp, *vp;
if (vrefcnt(ap->a_vp) > 1) {
lvp = NULLVPTOLOWERVP(ap->a_vp);
vp = ap->a_vp;
if (vrefcnt(vp) > 1) {
lvp = NULLVPTOLOWERVP(vp);
VREF(lvp);
vreleit = 1;
} else
vreleit = 0;
VTONULL(vp)->null_flags |= NULLV_DROP;
retval = null_bypass(&ap->a_gen);
if (vreleit != 0)
vrele(lvp);