From: Vasily Averin <vvs@virtuozzo.com>
Date: Sat, 3 Nov 2018 20:50:08 +0000 (-0400)
Subject: ext4: add missing brelse() add_new_gdb_meta_bg()'s error path
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=61a9c11e5e7a0dab5381afa5d9d4dd5ebf18f7a0;p=openwrt%2Fstaging%2Fblogic.git

ext4: add missing brelse() add_new_gdb_meta_bg()'s error path

Fixes: 01f795f9e0d6 ("ext4: add online resizing support for meta_bg ...")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org # 3.7
---

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 0a4dc6217e78..7131f35b62d9 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -922,6 +922,7 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
 				     sizeof(struct buffer_head *),
 				     GFP_NOFS);
 	if (!n_group_desc) {
+		brelse(gdb_bh);
 		err = -ENOMEM;
 		ext4_warning(sb, "not enough memory for %lu groups",
 			     gdb_num + 1);
@@ -937,8 +938,6 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
 	kvfree(o_group_desc);
 	BUFFER_TRACE(gdb_bh, "get_write_access");
 	err = ext4_journal_get_write_access(handle, gdb_bh);
-	if (unlikely(err))
-		brelse(gdb_bh);
 	return err;
 }