From nobody Mon Nov 25 04:28:43 2024 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (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 DC63A12B63; Fri, 11 Oct 2024 01:18:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728609513; cv=none; b=GSdSn0UegQQffWUieDrObPcZJ1q8VFuAa56kUS9YAKSODAeYfxmjKNJU0ask0D9hB8vmpwbmukL73bWxJFUjeuXvdrPNZ0JP3Y0z2khKIUxHA0eXqKgRNDzPLtU2w5rjc2we+ipy4Ki8sFxtPXi+ZP+IkftuM7wDgqLLKy0LkH8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728609513; c=relaxed/simple; bh=GzHGS1fXHtKwf9nPn00WkzzL2JUbJjrz3B4xPPfZFf4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ap1HStP47K66EC1gU2RDEABml6g7vvwpbXEAnXUsBgyEQxdRTZn4CxzmPrq2E6G7XifWm7vey77Idr8MCdmwUefAmZ3Tjw54l0Sf88co8FEeHze3k1JhwbF1BOFU7c9cbLFRcQJKiylH4dht/htmv/LS6ybcI4uXwVSciIrs90Y= 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=45.249.212.51 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 dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4XPpfC1Tr9z4f3kw5; Fri, 11 Oct 2024 09:18:11 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id D23D41A092F; Fri, 11 Oct 2024 09:18:28 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgDH+sbefAhnm9MFDw--.55490S10; Fri, 11 Oct 2024 09:18:28 +0800 (CST) From: Yu Kuai To: song@kernel.org, mariusz.tkaczyk@intel.com Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH v2 6/7] md/raid10: don't wait for Faulty rdev in wait_blocked_rdev() Date: Fri, 11 Oct 2024 09:16:29 +0800 Message-Id: <20241011011630.2002803-7-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241011011630.2002803-1-yukuai1@huaweicloud.com> References: <20241011011630.2002803-1-yukuai1@huaweicloud.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 X-CM-TRANSID: gCh0CgDH+sbefAhnm9MFDw--.55490S10 X-Coremail-Antispam: 1UD129KBjvJXoW7AFWDZF48uw13Aw45Gw1rJFb_yoW8Kr4fpa 9xGFySyFW8GF47WF1DJr4UG3WYv34xKrW2yrZrJ34rX3y3Kr98GF48JryrJryrAFZxZr43 WF15GrW7CayYyFUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPj14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY1x0262kKe7AKxVWUAV WUtwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v2 6r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2 Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_ Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8Jw CI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUYcTQUUUU U X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai Faulty rdev should never be accessed anymore, hence there is no point to wait for bad block to be acknowledged in this case while handling write request. Signed-off-by: Yu Kuai --- drivers/md/raid10.c | 40 ++++++++++++++++++---------------------- 1 file changed, 18 insertions(+), 22 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index f3bf1116794a..ff73db2f6c41 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1285,9 +1285,9 @@ static void raid10_write_one_disk(struct mddev *mddev= , struct r10bio *r10_bio, =20 static void wait_blocked_dev(struct mddev *mddev, struct r10bio *r10_bio) { - int i; struct r10conf *conf =3D mddev->private; struct md_rdev *blocked_rdev; + int i; =20 retry_wait: blocked_rdev =3D NULL; @@ -1295,40 +1295,36 @@ static void wait_blocked_dev(struct mddev *mddev, s= truct r10bio *r10_bio) struct md_rdev *rdev, *rrdev; =20 rdev =3D conf->mirrors[i].rdev; - rrdev =3D conf->mirrors[i].replacement; - if (rdev && unlikely(test_bit(Blocked, &rdev->flags))) { - atomic_inc(&rdev->nr_pending); - blocked_rdev =3D rdev; - break; - } - if (rrdev && unlikely(test_bit(Blocked, &rrdev->flags))) { - atomic_inc(&rrdev->nr_pending); - blocked_rdev =3D rrdev; - break; - } - - if (rdev && test_bit(WriteErrorSeen, &rdev->flags)) { + if (rdev) { sector_t dev_sector =3D r10_bio->devs[i].addr; =20 /* * Discard request doesn't care the write result * so it doesn't need to wait blocked disk here. */ - if (!r10_bio->sectors) - continue; - - if (rdev_has_badblock(rdev, dev_sector, - r10_bio->sectors) < 0) { + if (test_bit(WriteErrorSeen, &rdev->flags) && + r10_bio->sectors && + rdev_has_badblock(rdev, dev_sector, + r10_bio->sectors) < 0) /* - * Mustn't write here until the bad block - * is acknowledged + * Mustn't write here until the bad + * block is acknowledged */ - atomic_inc(&rdev->nr_pending); set_bit(BlockedBadBlocks, &rdev->flags); + + if (rdev_blocked(rdev)) { blocked_rdev =3D rdev; + atomic_inc(&rdev->nr_pending); break; } } + + rrdev =3D conf->mirrors[i].replacement; + if (rrdev && rdev_blocked(rrdev)) { + atomic_inc(&rrdev->nr_pending); + blocked_rdev =3D rrdev; + break; + } } =20 if (unlikely(blocked_rdev)) { --=20 2.39.2