From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 2C4D927511F; Mon, 1 Sep 2025 03:41:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756698090; cv=none; b=ee9UjIe3RJ+ph0mBWudtK5eSkJ03rOk9RDuQqTPteqW5kmyBO7YCPzlL5GjEB3q4TsA1FgoSYmr1fN5uXJwtvnXibaAg/O6ceuss+5+Bkmh7Clrhmgk5+KBYR608Sthx23cuy9u3vmeFHBXDFb+EDpV1xqG17ckz6lt5Le9cZWE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756698090; c=relaxed/simple; bh=e6ASAQ0p3Or4SsNcKiAo9WTNRL/bapViX4/aO+PPlfw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=erXIagUvSlc1K8wFKJD3IqSwzTZuwOTvCX4yXjXeB0CPwvtFExTFvBSQMQnlC0xGME+AsiEaDhrvfEJhievGIqN4jBygSSV4iuCnwlebMGccrx3Z99prwtDuw/K6H+na0lqLrO5gb8uidQQTZnbTjVTXxaG4/5uto4lfz015X1k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4cFZRW4Y0XzKHMdm; Mon, 1 Sep 2025 11:41:27 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 6F4F21A159E; Mon, 1 Sep 2025 11:41:27 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAncIzWFbVotmf1Aw--.38057S19; Mon, 01 Sep 2025 11:41:27 +0800 (CST) From: Yu Kuai To: hch@infradead.org, colyli@kernel.org, hare@suse.de, dlemoal@kernel.org, tieren@fnnas.com, axboe@kernel.dk, tj@kernel.org, josef@toxicpanda.com, song@kernel.org, kmo@daterainc.com, satyat@google.com, ebiggers@google.com, neil@brown.name, akpm@linux-foundation.org Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-raid@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH RFC v3 15/15] md/raid0: convert raid0_make_request() to use bio_submit_split_bioset() Date: Mon, 1 Sep 2025 11:32:20 +0800 Message-Id: <20250901033220.42982-16-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250901033220.42982-1-yukuai1@huaweicloud.com> References: <20250901033220.42982-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgAncIzWFbVotmf1Aw--.38057S19 X-Coremail-Antispam: 1UD129KBjvJXoW7JFy5Kr4DArWrWr43Ww15urg_yoW8JF1kpw sxWFWav3yUJFZYgwsrJasFyas5GFyYgrWUCFZ3Xw1kXrn2vrnFkw4Fq3yFqFy5ArWrC3s8 Jw1qkrsxC3W5JrDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUma14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr1j6r xdM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0D M2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx v20xvE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l F7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2 IY04v7MxkF7I0En4kS14v26r4a6rW5MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY 6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17 CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r4j6ryUMIIF 0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCw CI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsG vfC2KfnxnUUI43ZEXa7sRRtCztUUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai Currently, raid0_make_request() will remap the original bio to underlying disks to prevent disordered IO. Now that bio_submit_split_bioset() will put original bio to the head of current->bio_list, it's safe converting to use this helper and bio will still be ordered. CC: Jan Kara Signed-off-by: Yu Kuai --- drivers/md/raid0.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 99f7839b4e96..857adc487962 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -607,19 +607,10 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio) : sector_div(sector, chunk_sects)); if (sectors < bio_sectors(bio)) { - struct bio *split = bio_split(bio, sectors, GFP_NOIO, + bio = bio_submit_split_bioset(bio, sectors, &mddev->bio_set); - - if (IS_ERR(split)) { - bio->bi_status = errno_to_blk_status(PTR_ERR(split)); - bio_endio(bio); + if (!bio) return true; - } - - bio_chain(split, bio); - trace_block_split(split, bio->bi_iter.bi_sector); - raid0_map_submit_bio(mddev, bio); - bio = split; } raid0_map_submit_bio(mddev, bio); -- 2.39.2