[PATCH 4.14 075/124] ext4: add missing brelse() add_new_gdb_meta_bg()s error path

Greg Kroah-Hartman
2018-11-19T17:38:09Z

From: Vasily Averin <vvs@virtuozzo.com>

commit 61a9c11e5e7a0dab5381afa5d9d4dd5ebf18f7a0 upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
fs/ext4/resize.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -901,6 +901,7 @@ static int add_new_gdb_meta_bg(struct su
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);
@@ -916,8 +917,6 @@ static int add_new_gdb_meta_bg(struct su
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;
}