Even if the slot is already read out, we may still need to re-balance
the tree, thus it can cause error in that btrfs_del_item() call.

Link: https://lore.kernel.org/linux-btrfs/9b45f60f-c849-e072-64ef-298937e6a8a3@suse.com/T/#t

Signed-off-by: void0red <void0red@gmail.com>
---
 fs/btrfs/delayed-inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index cac5169eaf8d..88a5d893972d 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1043,7 +1043,7 @@ static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans,
 	 * so there is only one iref. The case that several irefs are
 	 * in the same item doesn't exist.
 	 */
-	btrfs_del_item(trans, root, path);
+	ret = btrfs_del_item(trans, root, path);
 out:
 	btrfs_release_delayed_iref(node);
 	btrfs_release_path(path);
-- 
2.34.1

On Sat, Feb 18, 2023 at 12:36:48PM +0800, void0red wrote:
> Even if the slot is already read out, we may still need to re-balance
> the tree, thus it can cause error in that btrfs_del_item() call.
> 
> Link: https://lore.kernel.org/linux-btrfs/9b45f60f-c849-e072-64ef-298937e6a8a3@suse.com/T/#t
> 
> Signed-off-by: void0red <void0red@gmail.com>

Added to misc-next, thanks.

On 2023/2/18 12:36, void0red wrote:
> Even if the slot is already read out, we may still need to re-balance
> the tree, thus it can cause error in that btrfs_del_item() call.
> 
> Link: https://lore.kernel.org/linux-btrfs/9b45f60f-c849-e072-64ef-298937e6a8a3@suse.com/T/#t
> 
> Signed-off-by: void0red <void0red@gmail.com>

Reviewed-by: Qu Wenruo <wqu@suse.com>

Thanks,
Qu

> ---
>   fs/btrfs/delayed-inode.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
> index cac5169eaf8d..88a5d893972d 100644
> --- a/fs/btrfs/delayed-inode.c
> +++ b/fs/btrfs/delayed-inode.c
> @@ -1043,7 +1043,7 @@ static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans,
>   	 * so there is only one iref. The case that several irefs are
>   	 * in the same item doesn't exist.
>   	 */
> -	btrfs_del_item(trans, root, path);
> +	ret = btrfs_del_item(trans, root, path);
>   out:
>   	btrfs_release_delayed_iref(node);
>   	btrfs_release_path(path);