linux-kernel - Re: [PATCH] btrfs: list usage cleanup

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Message-ID: <20180927184704.GA29754@vader>
Date:   Thu, 27 Sep 2018 11:47:04 -0700
From:   Omar Sandoval <osandov@...ndov.com>
To:     zhong jiang <zhongjiang@...wei.com>
Cc:     dsterba@...e.com, jbacik@...com, clm@...com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: list usage cleanup

On Wed, Sep 26, 2018 at 04:35:45PM +0800, zhong jiang wrote:
> Trival cleanup, list_move_tail will implement the same function that
> list_del() + list_add_tail() will do. hence just replace them.
> 
> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
> ---
>  fs/btrfs/send.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
> index 094cc144..d87f416 100644
> --- a/fs/btrfs/send.c
> +++ b/fs/btrfs/send.c
> @@ -2075,8 +2075,7 @@ static struct name_cache_entry *name_cache_search(struct send_ctx *sctx,
>   */
>  static void name_cache_used(struct send_ctx *sctx, struct name_cache_entry *nce)
>  {
> -	list_del(&nce->list);
> -	list_add_tail(&nce->list, &sctx->name_cache_list);
> +	list_move_tail(&nce->list, &sctx->name_cache_list);
>  }

At that point do we even need such a trivial helper, considering that
this is only called in one place?