[34-longterm 013/179] ext4: release page cache in ext4_mb_load_buddy error path

[Paul Gortmaker]

From: Yang Ruirui <ruirui.r.yang@xxxxxxxxx>

                   -------------------
    This is a commit scheduled for the next v2.6.34 longterm release.
    http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
    If you see a problem with using this for longterm, please comment.
                   -------------------

commit 26626f1172fb4f3f323239a6a5cf4e082643fa46 upstream.

Add missing page_cache_release in the error path of ext4_mb_load_buddy

Signed-off-by: Yang Ruirui <ruirui.r.yang@xxxxxxxxx>
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
 fs/ext4/mballoc.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 917fe78..f1c9a84 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1173,6 +1173,8 @@ repeat_load_buddy:
 	return 0;
 
 err:
+	if (page)
+		page_cache_release(page);
 	if (e4b->bd_bitmap_page)
 		page_cache_release(e4b->bd_bitmap_page);
 	if (e4b->bd_buddy_page)
-- 
1.7.9.6

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