Btrfs: fix memory leak in start_transaction()

This patch fixes memory leak of the transaction handle which happened when starting transaction failed on a freezed fs. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
git-mirror · Oct 9, 2012 · e8830e6 · e8830e6
1 parent d24bec3
commit e8830e6
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
@@ -351,8 +351,10 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
 	 */
 	if (type != TRANS_JOIN_NOLOCK &&
 	    !__sb_start_write(root->fs_info->sb, SB_FREEZE_FS, false)) {
-		if (type == TRANS_JOIN_FREEZE)
+		if (type == TRANS_JOIN_FREEZE) {
+			kmem_cache_free(btrfs_trans_handle_cachep, h);
 			return ERR_PTR(-EPERM);
+		}
 		sb_start_intwrite(root->fs_info->sb);
 	}