linux-kernel - [PATCH 2/7] ext4 resize: missing brelse() after errors in set_flexbg_block

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Date:   Mon, 29 Oct 2018 18:25:11 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>
Cc:     Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-kernel@...r.kernel.org,
        Yongqiang Yang <xiaoqiangnk@...il.com>,
        Yongqiang Yang <xiaoqiangnk@...il.com>
Subject: [PATCH 2/7] ext4 resize: missing brelse() after errors in
 set_flexbg_block_bitmap()

Fixes 33afdcc5402d ("ext4: add a function which sets up group blocks ...")
#? cc: stable@...r.kernel.org # 3.3+

Signed-off-by: Vasily Averin <vvs@...nvz.org>
---
 fs/ext4/resize.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index c3fa30878ca8..0a4dc6217e78 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -459,16 +459,18 @@ static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle,
 
 		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",
 			   first_cluster, first_cluster - start, count2);
 		ext4_set_bits(bh->b_data, first_cluster - start, count2);
 
 		err = ext4_handle_dirty_metadata(handle, NULL, bh);
+		brelse(bh);
 		if (unlikely(err))
 			return err;
-		brelse(bh);
 	}
 
 	return 0;
-- 
2.17.1