From 698d71d3d474e7de7d562a61eb23cbf9ac25888c Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Fri, 16 Oct 2009 23:18:16 +0100
Subject: [PATCH] --- yaml --- r: 167669 b: refs/heads/master c:
 4c6fff445d7aa753957856278d4d93bcad6e2c14 h: refs/heads/master i:   167667:
 0a90d2de4ae7191081794660bdeff76f2d45d793 v: v3

---
 [refs]                     | 2 +-
 trunk/drivers/md/dm-snap.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 2436bae97259..e31de21802a5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0e8c4e4e3ebb15756ddc4170a88149a2cd323cfe
+refs/heads/master: 4c6fff445d7aa753957856278d4d93bcad6e2c14
diff --git a/trunk/drivers/md/dm-snap.c b/trunk/drivers/md/dm-snap.c
index 9cb392b3e920..9bc814aa2bbd 100644
--- a/trunk/drivers/md/dm-snap.c
+++ b/trunk/drivers/md/dm-snap.c
@@ -1152,6 +1152,8 @@ static int snapshot_status(struct dm_target *ti, status_type_t type,
 	unsigned sz = 0;
 	struct dm_snapshot *snap = ti->private;
 
+	down_write(&snap->lock);
+
 	switch (type) {
 	case STATUSTYPE_INFO:
 		if (!snap->valid)
@@ -1183,6 +1185,8 @@ static int snapshot_status(struct dm_target *ti, status_type_t type,
 		break;
 	}
 
+	up_write(&snap->lock);
+
 	return 0;
 }