diff options
| author | jeff <jeff@FreeBSD.org> | 2005-03-31 05:22:45 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2005-03-31 05:22:45 +0000 |
| commit | e4d4b610ba46c67741445dba97004a3acf77973d (patch) | |
| tree | 608f481969550a332d278ecd165c72eaced61742 /sys/kern | |
| parent | f13ee4b8f22cddc38cdb5c5b16cd6f8f3cf1a8dd (diff) | |
| download | FreeBSD-src-e4d4b610ba46c67741445dba97004a3acf77973d.zip FreeBSD-src-e4d4b610ba46c67741445dba97004a3acf77973d.tar.gz | |
- Disable vfs shared locks by default. They must be specifically enabled
on filesystems which safely support them. It appears that many
network filesystems specifically are not shared lock safe.
Sponsored by: Isilon Systems, Inc.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/vfs_subr.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 09fc95f..7cb1ac4 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -831,7 +831,11 @@ getnewvnode(tag, mp, vops, vpp) */ vp->v_vnlock = &vp->v_lock; mtx_init(&vp->v_interlock, "vnode interlock", NULL, MTX_DEF); - lockinit(vp->v_vnlock, PVFS, tag, VLKTIMEOUT, 0); + /* + * By default, don't allow shared locks unless filesystems + * opt-in. + */ + lockinit(vp->v_vnlock, PVFS, tag, VLKTIMEOUT, LK_NOSHARE); /* * Initialize bufobj. */ |
