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Commit b44c59a8 authored by Johann Lombardi's avatar Johann Lombardi Committed by Chris Mason
Browse files

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: default avatarJohann Lombardi <johann@whamcloud.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent fe3f566c

fs/btrfs/inode.c

+5 −3
Original line number Diff line number Diff line
@@ -6961,8 +6961,10 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, 
	 * 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 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, 
	}

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);