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authorChengguang Xu <cgxu519@mykernel.net>2019-10-22 17:17:38 +0800
committerJan Kara <jack@suse.cz>2019-10-22 11:24:48 +0200
commitba1af2e47446ac353395b4c274408944284ceeaa (patch)
treefc3a0fed5f1fcc5de6195fccb45697df6fb4de37 /fs/ext2
parent158be76c01172f4ffa3f10e2b4b433b3e496c75d (diff)
downloadlinux-ba1af2e47446ac353395b4c274408944284ceeaa.tar.bz2
ext2: add missing brelse in ext2_new_blocks()
Fix missing brelse of bitmap_bh in the case of retry. Link: https://lore.kernel.org/r/20191022091738.9160-1-cgxu519@mykernel.net Signed-off-by: Chengguang Xu <cgxu519@mykernel.net> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/balloc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 924c1c765306..4664d324567c 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1313,6 +1313,13 @@ retry_alloc:
if (free_blocks > 0) {
grp_target_blk = ((goal - le32_to_cpu(es->s_first_data_block)) %
EXT2_BLOCKS_PER_GROUP(sb));
+ /*
+ * In case we retry allocation (due to fs reservation not
+ * working out or fs corruption), the bitmap_bh is non-null
+ * pointer and we have to release it before calling
+ * read_block_bitmap().
+ */
+ brelse(bitmap_bh);
bitmap_bh = read_block_bitmap(sb, group_no);
if (!bitmap_bh)
goto io_error;