From 9f705501afe6e906ce339b38f6d635c4e2f73eb3 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Mon, 14 Feb 2011 12:52:08 -0500
Subject: [PATCH] --- yaml --- r: 233231 b: refs/heads/master c:
 e3f24cc521cb7ba60ac137abd1939e4e03435e80 h: refs/heads/master i:   233229:
 2d19a502d5bc45ad724c1c5978ad79600080d90c   233227:
 b5bd79ea8367a27456f139e0ad0c7af785e85ab7   233223:
 74b4a5ca77122a2b067e26c9434dd4772d3f525e   233215:
 aee49e238ff6655936a0d52d12800afa667474bf v: v3

---
 [refs]                     |  2 +-
 trunk/fs/btrfs/extent_io.c | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index ccdd3690837b..47c2faacc9f9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: eb14ab8ed24a0405fd056068b28c33a1cd846024
+refs/heads/master: e3f24cc521cb7ba60ac137abd1939e4e03435e80
diff --git a/trunk/fs/btrfs/extent_io.c b/trunk/fs/btrfs/extent_io.c
index 0418bf2c9757..e7aeba242701 100644
--- a/trunk/fs/btrfs/extent_io.c
+++ b/trunk/fs/btrfs/extent_io.c
@@ -2822,9 +2822,17 @@ int try_release_extent_state(struct extent_map_tree *map,
 		 * at this point we can safely clear everything except the
 		 * locked bit and the nodatasum bit
 		 */
-		clear_extent_bit(tree, start, end,
+		ret = clear_extent_bit(tree, start, end,
 				 ~(EXTENT_LOCKED | EXTENT_NODATASUM),
 				 0, 0, NULL, mask);
+
+		/* if clear_extent_bit failed for enomem reasons,
+		 * we can't allow the release to continue.
+		 */
+		if (ret < 0)
+			ret = 0;
+		else
+			ret = 1;
 	}
 	return ret;
 }