Commit 0c7a531a authored Apr 30, 2009 by Steven Whitehouse

GFS2: Fix glock ref counting bug



Depending on the ordering of events as we go around the
glock shrinker loop, it is possible to drop the ref count
of a glock incorrectly. It doesn't happen very often. This
patch corrects the got_ref variable, fixing the problem.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

parent 091bf762

fs/gfs2/glock.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1304,6 +1304,7 @@ static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
		nr--;
		if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
		gfs2_glock_put(gl);
		got_ref = 0;
		}
		spin_lock(&lru_lock);
		if (may_demote)