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Back out r1.653; it turns out that the race (or at least the printf) is

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actually not hard to trigger, and it can cause a lot of console spam.

Approved by:	kan
This commit is contained in:
Kris Kennaway 2006-01-28 03:06:35 +00:00
parent 52a3a1928e
commit d5e5528afe
1 changed files with 0 additions and 20 deletions
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20
sys/kern/vfs_subr.c
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@ -1920,7 +1920,6 @@ vget( struct vnode *vp, int flags, struct thread *td)
{
int oweinact;
int oldflags;
int usecount;
int error;
error = 0;
@ -1942,7 +1941,6 @@ vget( struct vnode *vp, int flags, struct thread *td)
flags |= LK_EXCLUSIVE;
oweinact = 1;
}
usecount = vp->v_usecount;
v_incr_usecount(vp);
if ((error = vn_lock(vp, flags | LK_INTERLOCK, td)) != 0) {
VI_LOCK(vp);
@ -1953,24 +1951,6 @@ vget( struct vnode *vp, int flags, struct thread *td)
* active.
*/
v_decr_usecount(vp);
/*
* Print warning when race below occur:
*
* thread1 thread2
* ------- -------
* v_usecount=0
* vref(vp) v_usecount=1
* vget(vp)
* v_incr_usecount(vp) v_usecount=2
* vn_lock(vp)
* vrele(vp) v_usecount=1
* v_decr_usecount(vp) v_usecount=0
*
* In such situation VOP_INACTIVE() will not be called for
* the vnode vp.
*/
if (usecount > 0 && vp->v_usecount == 0)
printf("vinactive() won't be called for vp=%p\n", vp);
return (error);
}
if (vp->v_iflag & VI_DOOMED && (flags & LK_RETRY) == 0)