mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com>
To: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>,
	Philipp Reisner <philipp.reisner@linbit.com>,
	Lars Ellenberg <lars.ellenberg@linbit.com>,
	Jens Axboe <axboe@kernel.dk>, Denis Efremov <efremov@linux.com>,
	Yuho Choi <dbgh9129@gmail.com>, Peng Fan <peng.fan@nxp.com>,
	Hongyan Xu <getshell@seu.edu.cn>,
	Mateusz Nowicki <mateusz.nowicki@posteo.net>
Cc: linux-kernel@vger.kernel.org, drbd-dev@lists.linux.dev,
	linux-block@vger.kernel.org
Subject: Re: [PATCH] block: use assign_bit() where applicable
Date: Mon, 21 Sep 2026 13:46:04 +0200	[thread overview]
Message-ID: <b0ec8c92-cf1b-4e71-81ee-cbed5db56365@linbit.com> (raw)
In-Reply-To: <20260918141609.3022848-1-peng.fan@oss.nxp.com>

On 9/18/26 16:16, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> Convert open-coded if/else with set_bit/clear_bit and their
> non-atomic __set_bit/__clear_bit variants to the assign_bit/__assign_bit
> API.
> 
> Done with Coccinelle semantic patch:
>      // set_bit -> clear_bit => assign_bit
> 
>      @@
>      expression cond, bit, addr;
>      @@
> 
>      -if (cond)
>      -        set_bit(bit, addr);
>      -else
>      -        clear_bit(bit, addr);
>      +assign_bit(bit, addr, cond);
> 
>      // clear_bit -> set_bit => assign_bit
> 
>      @@
>      expression cond, bit, addr;
>      @@
> 
>      -if (cond)
>      -        clear_bit(bit, addr);
>      -else
>      -        set_bit(bit, addr);
>      +assign_bit(bit, addr, !cond);
> 
>      // __set_bit -> __clear_bit => __assign_bit
> 
>      @@
>      expression cond, bit, addr;
>      @@
> 
>      -if (cond)
>      -        __set_bit(bit, addr);
>      -else
>      -        __clear_bit(bit, addr);
>      +__assign_bit(bit, addr, cond);
> 
>      // __clear_bit -> __set_bit => __assign_bit
> 
>      @@
>      expression cond, bit, addr;
>      @@
> 
>      -if (cond)
>      -        __clear_bit(bit, addr);
>      -else
>      -        __set_bit(bit, addr);
>      +__assign_bit(bit, addr, !cond);
> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>   drivers/block/drbd/drbd_nl.c       | 16 ++++------------
>   drivers/block/drbd/drbd_receiver.c |  5 +----
>   drivers/block/floppy.c             |  8 ++------
>   drivers/block/mtip32xx/mtip32xx.c  |  6 ++----
>   4 files changed, 9 insertions(+), 26 deletions(-)
For DRBD:

Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>

Regards,
Christoph

      reply	other threads:[~2026-09-21 11:46 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-18 14:16 Peng Fan (OSS)
2026-09-21 11:46 ` Christoph Böhmwalder [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=b0ec8c92-cf1b-4e71-81ee-cbed5db56365@linbit.com \
    --to=christoph.boehmwalder@linbit.com \
    --cc=axboe@kernel.dk \
    --cc=dbgh9129@gmail.com \
    --cc=drbd-dev@lists.linux.dev \
    --cc=efremov@linux.com \
    --cc=getshell@seu.edu.cn \
    --cc=lars.ellenberg@linbit.com \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mateusz.nowicki@posteo.net \
    --cc=peng.fan@nxp.com \
    --cc=peng.fan@oss.nxp.com \
    --cc=philipp.reisner@linbit.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®