From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 18EC92248AF for ; Mon, 11 May 2026 01:42:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778463724; cv=none; b=lYI8BPss49tUu9/7excbtBcvOALGJzNZTPLkk+TXMKCHtYnZSV4q2V6uNVASPaVCC7R7h+UJS1s77f90Opjmk+ZmD02tN6eeLayB+wXDrbgQ64rTM6jeEe7UzG2OPh4iCz0PyMHqcrLKuJPzwvWIcd3KUvejrDcwY4e5wisl7t0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778463724; c=relaxed/simple; bh=664IJjAnAygTswmMXcF4pR+ZLCEzxvR7rupLK9cmhDc=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=fDzgzxT0kC8Y+5CRFDXA0wsHEL9GKKU/OKFtD13NW98iQWJV+4zh1xS4tz9KzEWU1OCpKvCeF+m4JvMZG2hhg7Li1N4hOn82UHy+jWsNqlfSBS6vLrjOvOj3T/KxW2sEv5zMstX6q+Z7xtHlJ7YmX7RD+zA6uK9GgriWalZ82cI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eSOqaTlC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eSOqaTlC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E070FC2BCF6; Mon, 11 May 2026 01:42:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778463723; bh=664IJjAnAygTswmMXcF4pR+ZLCEzxvR7rupLK9cmhDc=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=eSOqaTlCgVRKrAN3+Rh4c/kO+h9bEdRH9q6nZZbzMilQwr11cf2fsetVGQ9MTb86d 5F96/Njjr0v58HvCY3RVHeYfE13tKGa/HY03rwl+TGr+UhB622vTe26lLdeurtJEIP So+slAx8KtmQ0IQX1LccFv7iZt9iHJlF2S8g7cfZM+6vtMwdxK8LFQK0TpQaFiTWzx v90uPaZv8S777qMWPq2BeiJX0nUQED7sPS8JeVPU0bfNGuRyTGRWkvSaFqT90IrvXH XUxC/nG3f7wAomFdr9h8iNKgqPFJ5xBORlDt3uLSVNfQnmL2AY9zG4prHw1JVKwn3l fk7x5BWNk+hWw== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3FD373930039; Mon, 11 May 2026 01:41:12 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [f2fs-dev] [PATCH] f2fs: annotate lockless last_time[] accesses From: patchwork-bot+f2fs@kernel.org Message-Id: <177846367082.1975880.2219593075807380790.git-patchwork-notify@kernel.org> Date: Mon, 11 May 2026 01:41:10 +0000 References: <20260506010709.3287111-1-zzzccc427@gmail.com> In-Reply-To: <20260506010709.3287111-1-zzzccc427@gmail.com> To: Cen Zhang Cc: jaegeuk@kernel.org, chao@kernel.org, baijiaju1990@gmail.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Hello: This patch was applied to jaegeuk/f2fs.git (dev) by Jaegeuk Kim : On Wed, 6 May 2026 09:07:09 +0800 you wrote: > f2fs stores mount-wide activity timestamps in sbi->last_time[] and > samples them from background discard, GC, and balance paths without a > dedicated lock. The timestamps are used as best-effort heuristics to > decide whether background work should run now or sleep a bit longer. > > The current helpers use plain loads and stores, so KCSAN can report races > between frequent foreground updates and background readers. Exact > freshness is not required here, but the intentional lockless accesses > should be marked explicitly. > > [...] Here is the summary with links: - [f2fs-dev] f2fs: annotate lockless last_time[] accesses https://git.kernel.org/jaegeuk/f2fs/c/c4bbbc96e530 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html