netdev - Re: [PATCH linux-next v2] SUNRPC: Change list definition method

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Message-Id: <9fd4fded-abee-45ab-8654-359f98846ba2@app.fastmail.com>
Date: Wed, 10 Dec 2025 08:56:33 -0500
From: "Chuck Lever" <cel@...nel.org>
To: "Chenguang Zhao" <zhaochenguang@...inos.cn>,
 "Trond Myklebust" <trondmy@...nel.org>, "Anna Schumaker" <anna@...nel.org>,
 "Chuck Lever" <chuck.lever@...cle.com>, "Jeff Layton" <jlayton@...nel.org>,
 NeilBrown <neil@...wn.name>, "Olga Kornievskaia" <okorniev@...hat.com>,
 "Dai Ngo" <Dai.Ngo@...cle.com>, "Tom Talpey" <tom@...pey.com>,
 "David S. Miller" <davem@...emloft.net>,
 "Eric Dumazet" <edumazet@...gle.com>, "Jakub Kicinski" <kuba@...nel.org>,
 "Paolo Abeni" <pabeni@...hat.com>, "Simon Horman" <horms@...nel.org>
Cc: linux-nfs@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-next v2] SUNRPC: Change list definition method

On Mon, Dec 8, 2025, at 3:53 AM, Chenguang Zhao wrote:
> The LIST_HEAD macro can both define a linked list and initialize
> it in one step. To simplify code, we replace the separate operations
> of linked list definition and manual initialization with the LIST_HEAD
> macro.
>
> Signed-off-by: Chenguang Zhao <zhaochenguang@...inos.cn>
> ---
> v2:
>  - Modify the commit message according to Chuck's suggestion
> 
>  net/sunrpc/backchannel_rqst.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
> index caa94cf57123..949022c5574c 100644
> --- a/net/sunrpc/backchannel_rqst.c
> +++ b/net/sunrpc/backchannel_rqst.c
> @@ -131,7 +131,7 @@ EXPORT_SYMBOL_GPL(xprt_setup_backchannel);
>  int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs)
>  {
>  	struct rpc_rqst *req;
> -	struct list_head tmp_list;
> +	LIST_HEAD(tmp_list);
>  	int i;
> 
>  	dprintk("RPC:       setup backchannel transport\n");
> @@ -147,7 +147,6 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned 
> int min_reqs)
>  	 * lock is held on the rpc_xprt struct.  It also makes cleanup
>  	 * easier in case of memory allocation errors.
>  	 */
> -	INIT_LIST_HEAD(&tmp_list);
>  	for (i = 0; i < min_reqs; i++) {
>  		/* Pre-allocate one backchannel rpc_rqst */
>  		req = xprt_alloc_bc_req(xprt);
> -- 
> 2.25.1

backchannel_rqst.c looks like a client-side file, so I defer to my
colleagues who maintain the Linux NFS client.

Reviewed-by: Chuck Lever <chuck.lever@...cle.com>

-- 
Chuck Lever