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Code Issues Releases Activity

Move vnode MAC label initialization to after the release of the vnode

Browse Source 
interlock in getnewvnode() to avoid possible sleeps while holding
the mutex.  Note that the warning from Witness is a slight false
positive since we know there will be no contention on the interlock
since we haven't made the vnode available for use yet, but the theory
is not a bad one.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
This commit is contained in:
Robert Watson 2002-09-30 20:51:48 +00:00
parent c031391bd5
commit 0626774f08
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=104237
1 changed files with 3 additions and 3 deletions
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6
sys/kern/vfs_subr.c
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@ -990,14 +990,14 @@ getnewvnode(tag, mp, vops, vpp)
vp->v_tag = tag;
vp->v_op = vops;
lockinit(&vp->v_lock, PVFS, "vnlock", VLKTIMEOUT, LK_NOPAUSE);
#ifdef MAC
mac_init_vnode(vp);
#endif
*vpp = vp;
vp->v_usecount = 1;
vp->v_data = 0;
vp->v_cachedid = -1;
VI_UNLOCK(vp);
#ifdef MAC
mac_init_vnode(vp);
#endif
insmntque(vp, mp);
return (0);