linux-kernel - Re: [PATCH] btrfs: handle btrfs_del_item errors in __btrfs_update_delayed

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Message-ID: <a9afdba6-0175-abdc-6445-62bd0704346c@gmx.com>
Date:   Sat, 18 Feb 2023 12:41:06 +0800
From:   Qu Wenruo <quwenruo.btrfs@....com>
To:     void0red <void0red@...il.com>, dsterba@...e.com
Cc:     linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: handle btrfs_del_item errors in
 __btrfs_update_delayed_inode



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@...il.com>

Reviewed-by: Qu Wenruo <wqu@...e.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);