linux-kernel - Re: [PATCH 03/32] block: use extensible_ioctl

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Message-ID: <g4wrfq6kcejrgpf4twsku55pe2xfl34nxekg2y73esodxhprnk@gavy3kiw27sz>
Date: Wed, 10 Sep 2025 17:34:37 +0200
From: Jan Kara <jack@...e.cz>
To: Christian Brauner <brauner@...nel.org>
Cc: Jan Kara <jack@...e.cz>, Amir Goldstein <amir73il@...il.com>, 
	linux-fsdevel@...r.kernel.org, Josef Bacik <josef@...icpanda.com>, 
	Jeff Layton <jlayton@...nel.org>, Mike Yuan <me@...dnzj.com>, 
	Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>, Lennart Poettering <mzxreary@...inter.de>, 
	Daan De Meyer <daan.j.demeyer@...il.com>, Aleksa Sarai <cyphar@...har.com>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Jens Axboe <axboe@...nel.dk>, Tejun Heo <tj@...nel.org>, 
	Johannes Weiner <hannes@...xchg.org>, Michal Koutný <mkoutny@...e.com>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
	Chuck Lever <chuck.lever@...cle.com>, linux-nfs@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, 
	netdev@...r.kernel.org
Subject: Re: [PATCH 03/32] block: use extensible_ioctl_valid()

On Wed 10-09-25 16:36:48, Christian Brauner wrote:
> Use the new extensible_ioctl_valid() helper which is equivalent to what
> is done here.
> 
> Signed-off-by: Christian Brauner <brauner@...nel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  block/blk-integrity.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/block/blk-integrity.c b/block/blk-integrity.c
> index 056b8948369d..609d75d6a39b 100644
> --- a/block/blk-integrity.c
> +++ b/block/blk-integrity.c
> @@ -58,16 +58,14 @@ int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *bio)
>  int blk_get_meta_cap(struct block_device *bdev, unsigned int cmd,
>  		     struct logical_block_metadata_cap __user *argp)
>  {
> -	struct blk_integrity *bi = blk_get_integrity(bdev->bd_disk);
> +	struct blk_integrity *bi;
>  	struct logical_block_metadata_cap meta_cap = {};
>  	size_t usize = _IOC_SIZE(cmd);
>  
> -	if (_IOC_DIR(cmd)  != _IOC_DIR(FS_IOC_GETLBMD_CAP) ||
> -	    _IOC_TYPE(cmd) != _IOC_TYPE(FS_IOC_GETLBMD_CAP) ||
> -	    _IOC_NR(cmd)   != _IOC_NR(FS_IOC_GETLBMD_CAP) ||
> -	    _IOC_SIZE(cmd) < LBMD_SIZE_VER0)
> +	if (extensible_ioctl_valid(cmd, FS_IOC_GETLBMD_CAP, LBMD_SIZE_VER0))
>  		return -ENOIOCTLCMD;
>  
> +	bi = blk_get_integrity(bdev->bd_disk);
>  	if (!bi)
>  		goto out;
>  
> 
> -- 
> 2.47.3
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR