[PATCH] dm snapshot: fix invalidation ENOMEM

Fix ENOMEM error sign.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/md/dm-snap.c

diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 1d0fafd..7c14867 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1034,7 +1034,7 @@
 
 		pe = __find_pending_exception(snap, bio);
 		if (!pe) {
-			__invalidate_snapshot(snap, pe, ENOMEM);
+			__invalidate_snapshot(snap, pe, -ENOMEM);
 			goto next_snapshot;
 		}