From 153a4ec1f1b958c72c20276809682340b01b6675 Mon Sep 17 00:00:00 2001
From: Josef Bacik <josef@redhat.com>
Date: Tue, 25 Jan 2011 22:11:54 +0000
Subject: [PATCH] --- yaml --- r: 233002 b: refs/heads/master c:
 7adf5dfbb3af65a00e20b3ead224c3a1b40e4ec4 h: refs/heads/master v: v3

---
 [refs]                | 2 +-
 trunk/fs/btrfs/file.c | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 848aa74623d4..a6a47293199c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ad0397a7a97f55fd7f70998ec208c5d8b90310ff
+refs/heads/master: 7adf5dfbb3af65a00e20b3ead224c3a1b40e4ec4
diff --git a/trunk/fs/btrfs/file.c b/trunk/fs/btrfs/file.c
index 65b2424a4116..9e097fbfc78d 100644
--- a/trunk/fs/btrfs/file.c
+++ b/trunk/fs/btrfs/file.c
@@ -792,8 +792,12 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
 	for (i = 0; i < num_pages; i++) {
 		pages[i] = grab_cache_page(inode->i_mapping, index + i);
 		if (!pages[i]) {
-			err = -ENOMEM;
-			BUG_ON(1);
+			int c;
+			for (c = i - 1; c >= 0; c--) {
+				unlock_page(pages[c]);
+				page_cache_release(pages[c]);
+			}
+			return -ENOMEM;
 		}
 		wait_on_page_writeback(pages[i]);
 	}