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From: David Xu <davidxu@FreeBSD.org>
Date: Sun, 29 Aug 2010 08:15:57 +0000 (UTC)
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Subject: svn commit: r211960 - stable/8/lib/libthr/thread
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Author: davidxu
Date: Sun Aug 29 08:15:57 2010
New Revision: 211960
URL: http://svn.freebsd.org/changeset/base/211960

Log:
  MFC r211833: Decrease rdlock count only when thread unlocked
  a reader lock.

Modified:
  stable/8/lib/libthr/thread/thr_rtld.c

Modified: stable/8/lib/libthr/thread/thr_rtld.c
==============================================================================
--- stable/8/lib/libthr/thread/thr_rtld.c	Sun Aug 29 08:10:34 2010	(r211959)
+++ stable/8/lib/libthr/thread/thr_rtld.c	Sun Aug 29 08:15:57 2010	(r211960)
@@ -149,8 +149,8 @@ _thr_rtld_lock_release(void *lock)
 	
 	state = l->lock.rw_state;
 	if (_thr_rwlock_unlock(&l->lock) == 0) {
-		curthread->rdlock_count--;
 		if ((state & URWLOCK_WRITE_OWNER) == 0) {
+			curthread->rdlock_count--;
 			THR_CRITICAL_LEAVE(curthread);
 		} else {
 			_thr_signal_unblock(curthread);