From: sashiko-bot@kernel.org
To: "Jinjie Ruan" <ruanjinjie@huawei.com>
Cc: tytso@mit.edu, linux-ext4@vger.kernel.org
Subject: Re: [PATCH v3 1/8] user_namespace: Use acquire/release for nr_extents synchronization
Date: Wed, 02 Sep 2026 07:53:26 +0000 [thread overview]
Message-ID: <20260902075326.8C9571F00A3A@smtp.kernel.org> (raw)
In-Reply-To: <20260902074805.398540-2-ruanjinjie@huawei.com>
> Replace smp_wmb()/smp_rmb() with smp_store_release()/smp_load_acquire()
> when publishing and consuming `nr_extents`. 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: Alexander Viro <viro@zeniv.linux.org.uk>
> Cc: Christian Brauner <brauner@kernel.org>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Seth Forshee <sforshee@kernel.org>
> Cc: Kees Cook <kees@kernel.org>
> Cc: Aleksa Sarai <cyphar@cyphar.com>
> 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=1
next prev parent reply other threads:[~2026-09-02 7:53 UTC|newest]
Thread overview: 34+ 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 [this message]
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
2026-09-03 2:16 ` 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
2026-09-04 13:13 ` Petr Mladek
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
2026-09-04 7:20 ` Jinjie Ruan
2026-09-04 12:28 ` Petr Mladek
2026-09-04 12:28 ` Petr Mladek
2026-09-07 11:29 ` Jinjie Ruan
2026-09-07 11:29 ` Jinjie Ruan
2026-09-07 12:59 ` David Laight
2026-09-07 12:59 ` David Laight
2026-09-09 7:11 ` Jinjie Ruan
2026-09-09 7:11 ` Jinjie Ruan
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