From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 12 Mar 2021 15:25:06 -0500
Subject: btrfs: handle btrfs_record_root_in_trans failure in create_subvol
Git-commit: 221581e485751811db3b43148177be2a0bdb2f3c
Patch-mainline: v5.13-rc1
References: bsc#1187833

btrfs_record_root_in_trans will return errors in the future, so handle
the error properly in create_subvol.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/ioctl.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -581,7 +581,11 @@ static noinline int create_subvol(struct
 		goto fail;
 	}
 
-	btrfs_record_root_in_trans(trans, new_root);
+	ret = btrfs_record_root_in_trans(trans, new_root);
+	if (ret) {
+		btrfs_abort_transaction(trans, ret);
+		goto fail;
+	}
 
 	ret = btrfs_create_subvol_root(trans, new_root, root, new_dirid);
 	if (ret) {