Btrfs: fix subvol_sem leak in btrfs_rename()
btrfs_rename() does not release the subvol_sem if the transaction failed to start.
Signed-off-by: Johann Lombardi <johann@whamcloud.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 62ae9d5..1ca3e68 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6961,8 +6961,10 @@
* should cover the worst case number of items we'll modify.
*/
trans = btrfs_start_transaction(root, 20);
- if (IS_ERR(trans))
- return PTR_ERR(trans);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ goto out_notrans;
+ }
btrfs_set_trans_block_group(trans, new_dir);
@@ -7062,7 +7064,7 @@
}
out_fail:
btrfs_end_transaction_throttle(trans, root);
-
+out_notrans:
if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
up_read(&root->fs_info->subvol_sem);