From nobody Tue Dec 2 02:06:37 2025 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 B0FB52F7AC0; Fri, 21 Nov 2025 05:14:18 +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=1763702058; cv=none; b=P790OFLopvsU/tgi9vffHzkRvs8PZejDcR6vICRL1JY9yTGtLhwSeN9+M0iB9OcgrF1KG7kMj6RLjHAwXbbrtTzCpGzK03gCbZ1Ch3WfutQWZWneszWQc2SVWi6E/nFmp5Ew406kfNRXBXRLmis7gSadg10o1wwvQ4fRarTVeWY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763702058; c=relaxed/simple; bh=JonqufBwustNHiKnuFEj+bemyGyDGnChMvxlDXMgQDE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cK6SWKYB1a1dPIlTVKXSKJvJNTOoSXtQlUzxiRrjEODE0zgge+CeT+G6BfaAUY3pFplAuel3P6zG+pt/SuiTcfnJur4px9mqhfM37HsHMd5DKepiQXn+doKWRXWuL+hI3kIs5qTO92lTXgfzsqp4fpNXF5jSqlCUTePmH22N7v0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2883C116D0; Fri, 21 Nov 2025 05:14:16 +0000 (UTC) From: Yu Kuai To: song@kernel.org, yukuai@fnnas.com Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, linan122@huawei.com, xni@redhat.com Subject: [PATCH 4/7] md: add a helper md_config_align_limits() Date: Fri, 21 Nov 2025 13:14:03 +0800 Message-ID: <20251121051406.1316884-6-yukuai@fnnas.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251121051406.1316884-1-yukuai@fnnas.com> References: <20251121051406.1316884-1-yukuai@fnnas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This helper will be used by personalities that want to align bio to io_opt to get best IO bandwidth. Signed-off-by: Yu Kuai --- drivers/md/md.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/md/md.h b/drivers/md/md.h index 1ed90fd85ac4..c8190cf02701 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -1088,6 +1088,17 @@ static inline bool rdev_blocked(struct md_rdev *rdev) return false; } =20 +static inline void md_config_align_limits(struct mddev *mddev, + struct queue_limits *lim) +{ + if ((lim->max_hw_sectors << 9) < lim->io_opt) + lim->max_hw_sectors =3D lim->io_opt >> 9; + else + lim->max_hw_sectors =3D rounddown(lim->max_hw_sectors, + lim->io_opt >> 9); + mddev->bio_align_to_limits =3D true; +} + #define mddev_add_trace_msg(mddev, fmt, args...) \ do { \ if (!mddev_is_dm(mddev)) \ --=20 2.51.0