From: Liu Bo <bo.li.liu@oracle.com>
Date: Mon, 25 May 2015 09:30:14 +0000 (+0800)
Subject: Btrfs: add missing free_extent_buffer
X-Git-Tag: v4.2-rc1~65^2~33
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8635eda91ee11690bd8f73b2504ee19431fd6380;p=linux.git

Btrfs: add missing free_extent_buffer

read_tree_block may take a reference on the 'eb', a following
free_extent_buffer is necessary.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e78ab29f8f1b..076fd7484a82 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7981,6 +7981,7 @@ static int account_shared_subtree(struct btrfs_trans_handle *trans,
 			eb = read_tree_block(root, child_bytenr, child_gen);
 			if (!eb || !extent_buffer_uptodate(eb)) {
 				ret = -EIO;
+				free_extent_buffer(eb);
 				goto out;
 			}