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- Only the xlock holder should be calling VOP_LOCK on a vp once VI_XLOCK

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has been set.  Assert that this is the case so that we catch filesystems
   who are using naked VOP_LOCKs in illegal cases.

Sponsored by:	Isilon Systems, Inc.
This commit is contained in:
Jeff Roberson 2005-02-23 00:11:14 +00:00
parent 4c11620bb9
commit d8a7c99a1c
1 changed files with 5 additions and 0 deletions
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5
sys/kern/vfs_subr.c
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@ -3511,6 +3511,11 @@ vop_lock_pre(void *ap)
{
struct vop_lock_args *a = ap;
if (a->a_vp->v_iflag & VI_XLOCK &&
a->a_vp->v_vxthread != curthread) {
vprint("vop_lock_pre:", a->a_vp);
panic("vop_lock_pre: locked while xlock held.\n");
}
if ((a->a_flags & LK_INTERLOCK) == 0)
ASSERT_VI_UNLOCKED(a->a_vp, "VOP_LOCK");
else