From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793294041; b=aUT6+d8lcUluFDhb/01V3+xhroXXk5rkEHMcJLLrbvVSS/y2Xt09lX0+/BHP56aEklqq AADTHbeZrIyZRbDeWJNvAPobcohq34wuCzigq4oUkp/LmaCIkX/lGnDuJ9/8Bx2oRK1VD kUsq2dWr2Q09bAbqYR3soomJ0NdazsIOVsS+GuOigLo9d9rWePmYNVKktGcGVAlAytWE/ PL9eQaBBZ/d5PiHBuW2VZLmB5mrJcnNM+KAPQKX5a0AXzOrC+Cv74vMAxlhSUimbK1Umx dMxLFDaSG1d5uwuy4Y5JpC2HTP//5+BIkokxgPPs+oSsDhDo5mDP3v3NplD1T/o7mFA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793294041; h=Received:DKIM-Signature:Date:Message-ID:From:To:Cc:Subject: In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=S3Gl2OroIqDa23QeZD7GwfXWPordKgg+mwTbLTbPPpU=; b=3oU4jVI70EQNrQrGbBn0T5LEDrTkgzTFKwS1jNMSTldLBruE6jvJw8eYzL7JNk5NglEE Pp/gAdAPuof2m5EM3UQlpYTsVrVraIrVlbGPJDjFjiuejz1roTbwHdmrPuFDH6ikGi8dE bk8bqpb71FAoOdIdguDUfO2W/CFaiFuS+fx/8Gypl609X4U//6jbM94OdfgcQymxdiyTS g4sSRLWjcEPfH8ZEnrGdER/RGgIBfSUl0eLavYI77poX0C5sbThhi4nvaPsUGnvj8c9aK URs57Jx8cGbf613jG/UXbkYvaAklYIReTYzoMAarS3zvwGv6We4vpKEG7Un7vTQzgdA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="dklw/hck"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12A90606A31A; Thu, 29 Oct 2026 17:14:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=dklw/hck Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F0D51F01824; Thu, 29 Oct 2026 17:14:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793294040; bh=S3Gl2OroIqDa23QeZD7GwfXWPordKgg+mwTbLTbPPpU=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=dklw/hckDPqsP3hbKsG8Z0lkLe3LYbM85KdYJM5+G3JM7SDYhNoXiSjJ/atqqiN7p EToWWos9Xpco8uzVCQXZQLnGAwTdSA3urq7yTrD43sQsWT/rbVgnpIt+prM+mwHz5o Lq48GClWoVIB/Bivil290QKWWKFoDpIyswQGAP2qqn9ZdC5+P14Nl2hG1lTw78xCDE AIdNPRv/gvPNDZW5eC4Lf1hLpyMLegSLhvin7u/WbrrbChurosRJHtyhmDXP7dE1Xn Fi9Sor2YHrpwjF+/t/1lm1saU8O0JcoI01y3jrD/F985awygGl/umaZ7EZtlNewoTd dz5TkdeAGwetw== Date: Thu, 29 Oct 2026 07:13:59 -1000 Message-ID: <1aa24cac216bd57faf861684ed93edc8@kernel.org> From: Tejun Heo To: Zhe Liu Cc: josef@toxicpanda.com, axboe@kernel.dk, cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] blk-iocost: account flush sequence latency only once In-Reply-To: <20261029092424.764545-1-liuzhe1@kylinos.cn> References: <20261029092424.764545-1-liuzhe1@kylinos.cn> X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit On Thu, Oct 29, 2026 at 05:24:24PM +0800, Zhe Liu wrote: > + if (rq->rq_flags & RQF_FLUSH_SEQ) > + return; Can you please wrap the test in unlikely()? Acked-by: Tejun Heo Thanks. -- tejun