[PATCH] ext3: Fix missed mutex unlock

Missed unlock_super()call is added in error condition code path.
Signed-off-by: NLeonid Ananiev <leonid.i.ananiev@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/ext3/resize.c

@@ -974,6 +974,7 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
 	if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) {
 		ext3_warning(sb, __FUNCTION__,
 			     "multiple resizers run on filesystem!");
+		unlock_super(sb);
 		err = -EBUSY;
 		goto exit_put;
 	}