[PATCH 3.16 136/305] ext4: add missing brelse() in set_flexbg_block_bitmap()'s error path

[Ben Hutchings]

3.16.63-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Vasily Averin <v...@virtuozzo.com>

commit cea5794122125bf67559906a0762186cf417099c upstream.

Fixes: 33afdcc5402d ("ext4: add a function which sets up group blocks ...")
Signed-off-by: Vasily Averin <v...@virtuozzo.com>
Signed-off-by: Theodore Ts'o <ty...@mit.edu>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 fs/ext4/resize.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -442,16 +442,18 @@ static int set_flexbg_block_bitmap(struc
 
                BUFFER_TRACE(bh, "get_write_access");
                err = ext4_journal_get_write_access(handle, bh);
-               if (err)
+               if (err) {
+                       brelse(bh);
                        return err;
+               }
                ext4_debug("mark block bitmap %#04llx (+%llu/%u)\n", block,
                           block - start, count2);
                ext4_set_bits(bh->b_data, block - start, count2);
 
                err = ext4_handle_dirty_metadata(handle, NULL, bh);
+               brelse(bh);
                if (unlikely(err))
                        return err;
-               brelse(bh);
        }
 
        return 0;