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 11DC614D6F6 for ; Tue, 17 Dec 2024 23:36:08 +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=1734478569; cv=none; b=Xf9n9ArD5Z6/Nik00817WjnqaBFJpbEM6Z68u1ryTPpjJ/adyBDiIxWcjVBYqt8urfCksFHNSgZJnGV1vnKep2sh52dKOoZt1G+y7OULvwXpqvbv2xWgJKFjWcCIR4lLJ4PkFn7n7OEmpHP/NGjT+ItjwWbMC225WlVo7lwZZLc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734478569; c=relaxed/simple; bh=5YSOiXqnMKmHRsUb5rF6O3kDJUKqV2swSpSQ0hyR2a0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Jq9IP397z9YB95aUQggQ8jOs/yjWrfs/JVV9JUArDsZss242K7OqBZqEWwhq+SH/6sCpc8TF7X1YTJPFVLV201VFMQE0CpgMi3TZqFtU9AkEYs+C/m0O4t+OTalP7fU3VO83i8dg3NCUx7dpHowgz7uHnm8xXMFw4h+MFxROpsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=neH84RaY; 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="neH84RaY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73AC0C4CED3; Tue, 17 Dec 2024 23:36:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734478568; bh=5YSOiXqnMKmHRsUb5rF6O3kDJUKqV2swSpSQ0hyR2a0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=neH84RaYHAQstBjubkwdNiH9FMM+wgAHs2FPnlug/NKK3T9EKpcYsoIXELonXd3KZ 4x7zQzLlnXDAau80q+ZkG0sY6IWN6XhiYlsF4fXMTJDcoI/5FjUQL1JTvcSGDg11EL dptYADhrDckDMbB0wGaUIn41HJwbvIQbifcbte+4NHN5JjlVynNS8wrP3EiwqW/V2B P57me+KwWJLKnSyczc4jNC9Lpl22HUlzRVyiYHzRyNlyMLT7uJej4dSnw0sN/FI+P9 cBEQXc8Zt9BV8jYum7zN82A3yk4oXeZ2YhPBqQAUwnqkbG5CIk/QMDzWA9hhCfxamb srRyVpjtneHKQ== Message-ID: <791f68de-3636-48ad-b35c-fca9bf88f1e9@kernel.org> Date: Tue, 17 Dec 2024 15:36:08 -0800 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/3] block: Optimize blk_mq_submit_bio() for the cache hit scenario To: Bart Van Assche , Jens Axboe Cc: linux-block@vger.kernel.org, Christoph Hellwig References: <20241217223809.683035-1-bvanassche@acm.org> <20241217223809.683035-2-bvanassche@acm.org> Content-Language: en-US From: Damien Le Moal Organization: Western Digital Research In-Reply-To: <20241217223809.683035-2-bvanassche@acm.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 2024/12/17 14:38, Bart Van Assche wrote: > Help the CPU branch predictor in case of a cache hit by handling the cache > hit scenario first. > > Cc: Damien Le Moal > Cc: Christoph Hellwig > Signed-off-by: Bart Van Assche Looks OK to me. Reviewed-by: Damien Le Moal -- Damien Le Moal Western Digital Research