linux-kernel - Re: [PATCH] nfsd: Simplify the allocation of slab caches in nfsd_drc_slab

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Date: Fri, 02 Feb 2024 09:13:21 -0500
From: Benjamin Coddington <bcodding@...hat.com>
To: Kunwu Chan <chentao@...inos.cn>
Cc: chuck.lever@...cle.com, jlayton@...nel.org, neilb@...e.de,
 kolga@...app.com, Dai.Ngo@...cle.com, tom@...pey.com,
 linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nfsd: Simplify the allocation of slab caches in
 nfsd_drc_slab_create

On 1 Feb 2024, at 3:19, Kunwu Chan wrote:

> Use the new KMEM_CACHE() macro instead of direct kmem_cache_create
> to simplify the creation of SLAB caches.
> Make the code cleaner and more readable.
>
> Signed-off-by: Kunwu Chan <chentao@...inos.cn>
> ---
>  fs/nfsd/nfscache.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
> index 5c1a4a0aa605..64ce0cc22197 100644
> --- a/fs/nfsd/nfscache.c
> +++ b/fs/nfsd/nfscache.c
> @@ -166,8 +166,7 @@ nfsd_reply_cache_free(struct nfsd_drc_bucket *b, struct nfsd_cacherep *rp,
>
>  int nfsd_drc_slab_create(void)
>  {
> -	drc_slab = kmem_cache_create("nfsd_drc",
> -				sizeof(struct nfsd_cacherep), 0, 0, NULL);
> +	drc_slab = KMEM_CACHE(nfsd_cacherep, 0);
>  	return drc_slab ? 0: -ENOMEM;
>  }
>
> -- 
> 2.39.2

I don't agree that the code is cleaner or more readable like this.  I really
dislike having to parse through the extra "simplification" to see what's
actually being called and sent.

Just my .02 worth.

Ben