From: sashiko-bot@kernel.org
To: "Jinjie Ruan" <ruanjinjie@huawei.com>
Cc: tytso@mit.edu, linux-ext4@vger.kernel.org
Subject: Re: [PATCH v3 2/8] lib/vsprintf: Use acquire/release for ptr_key publication
Date: Wed, 02 Sep 2026 07:52:04 +0000 [thread overview]
Message-ID: <20260902075205.578161F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260902074805.398540-3-ruanjinjie@huawei.com>
> Replace the smp_wmb() + WRITE_ONCE() and READ_ONCE() + smp_rmb() barrier
> pair with smp_store_release()/smp_load_acquire() on filled_random_ptr_key.
>
> This expresses the publish/subscribe pattern more clearly and allows
> architectures with native acquire/release instructions (e.g. arm64's
> STLR/LDAR) to avoid the cost of full one-way barriers (DMB ISHST/ISHLD).
>
> No functional change intended.
>
> Cc: Petr Mladek <pmladek@suse.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Assisted-by: DeepSeek:DeepSeek-V3
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260902074805.398540-1-ruanjinjie@huawei.com?part=2
next prev parent reply other threads:[~2026-09-02 7:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 7:47 [PATCH v3 0/8] Convert barrier pairs to acquire/release for better performance Jinjie Ruan
2026-09-02 7:47 ` [PATCH v3 1/8] user_namespace: Use acquire/release for nr_extents synchronization Jinjie Ruan
2026-09-02 7:53 ` sashiko-bot
2026-09-02 10:09 ` Bradley Morgan
2026-09-02 13:03 ` Andy Shevchenko
2026-09-02 13:04 ` Andy Shevchenko
2026-09-03 1:42 ` Jinjie Ruan
2026-09-02 7:47 ` [PATCH v3 2/8] lib/vsprintf: Use acquire/release for ptr_key publication Jinjie Ruan
2026-09-02 7:52 ` sashiko-bot [this message]
2026-09-02 7:48 ` [PATCH v3 3/8] fs: aio: Use acquire/release for ring->tail publication Jinjie Ruan
2026-09-02 7:57 ` sashiko-bot
2026-09-02 7:48 ` [PATCH v3 4/8] fs: Use acquire/release for fdtable resize synchronization Jinjie Ruan
2026-09-02 7:53 ` sashiko-bot
2026-09-02 7:48 ` [PATCH v3 5/8] pidfs: Use test_bit_acquire() for attr flag tests Jinjie Ruan
2026-09-02 7:55 ` sashiko-bot
2026-09-02 7:48 ` [PATCH v3 6/8] super: Use acquire for SB_BORN check in super_cache_count() Jinjie Ruan
2026-09-02 7:58 ` sashiko-bot
2026-09-02 7:48 ` [PATCH v3 7/8] ext4: Fix out-of-bounds read in ext4_get_group_info() Jinjie Ruan
2026-09-02 8:01 ` sashiko-bot
2026-09-02 7:48 ` [PATCH v3 8/8] ext4: Convert group-count barrier protocol to acquire/release Jinjie Ruan
2026-09-02 7:58 ` sashiko-bot
2026-09-02 14:19 ` [PATCH v3 0/8] Convert barrier pairs to acquire/release for better performance Theodore Tso
2026-09-02 14:56 ` Jan Kara
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=20260902075205.578161F000E9@smtp.kernel.org \
--to=sashiko-bot@kernel.org \
--cc=linux-ext4@vger.kernel.org \
--cc=ruanjinjie@huawei.com \
--cc=sashiko-reviews@lists.linux.dev \
--cc=tytso@mit.edu \
/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