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- Disable vfs shared locks by default. They must be specifically enabled

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on filesystems which safely support them.  It appears that many
   network filesystems specifically are not shared lock safe.

Sponsored by:	Isilon Systems, Inc.
This commit is contained in:
Jeff Roberson 2005-03-31 05:22:45 +00:00
parent ec3db02a3e
commit e451d879a1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=144374
1 changed files with 5 additions and 1 deletions
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6
sys/kern/vfs_subr.c
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@ -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.
*/