[131/272] ext4: fix memory leak in ext4_free_branches

Greg KH
2011-02-16T01:29:37Z

From: Theodore Ts'o <tytso@mit.edu>

commit 1c5b9e9065567876c2d4a7a16d78f0fed154a5bf upstream.

Commit 40389687 moved a call to ext4_forget() out of
ext4_free_branches and let ext4_free_blocks() handle calling
bforget(). But that change unfortunately did not replace the call to
ext4_forget() with brelse(), which was needed to drop the in-use count
of the indirect block's buffer head, which lead to a memory leak when
deleting files that used indirect blocks. Fix this.

Thanks to Hugh Dickins for pointing this out.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
fs/ext4/inode.c | 1 +
1 file changed, 1 insertion(+)

--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4349,6 +4349,7 @@ static void ext4_free_branches(handle_t
(__le32 *) bh->b_data,
(__le32 *) bh->b_data + addr_per_block,
depth);
+ brelse(bh);

/*
* Everything below this this pointer has been