From patchwork Fri Apr 18 01:09:38 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 14056474 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 3B5A038DDB; Fri, 18 Apr 2025 01:16:51 +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=1744939014; cv=none; b=SqP7549DQWwd+y5u0tVmNspJSVx6inPpYEQahpnms97QDrzKeTpG8c9a3DQ8z7jVBrFEvLRkmlnRv2BxiKO2kS3HZlzsC59rZfDVdBjpCe3cNiTLJoSiJ55WwvtQjWm7/CrdSm2J26tETfIHBMFepC6+w0meZB/7uR7z7c2T3xQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744939014; c=relaxed/simple; bh=Ubf9NVVxVgXVJwynH42c+GpCfZfjXZQYOXILtxUffBM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=CcxJ6ZdQu7QqQYB/hO3IqeK7jduYSA4iAikoRWwZC8YlJRBOkjMnWjOFdkMwgjIjP/26/NUihN2LK3mr9vgxmacNFKYpepObJH1p28M05GhjyFLv4S/J1i/mWXVuofodGk79j6TcpfXUgWlar6SJPbq6Fwx9XOjysIJmtueJ+y8= 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 [172.19.163.235]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Zdxfw68rMz4f3kFB; Fri, 18 Apr 2025 09:16:24 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 987CD1A058E; Fri, 18 Apr 2025 09:16:48 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgDHK2D8pwFoK5w2Jw--.18201S6; Fri, 18 Apr 2025 09:16:48 +0800 (CST) From: Yu Kuai To: axboe@kernel.dk, xni@redhat.com, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org, yukuai3@huawei.com, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, nadav.amit@gmail.com, ubizjak@gmail.com, cl@linux.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH v2 2/5] md: record dm-raid gendisk in mddev Date: Fri, 18 Apr 2025 09:09:38 +0800 Message-Id: <20250418010941.667138-3-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250418010941.667138-1-yukuai1@huaweicloud.com> References: <20250418010941.667138-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgDHK2D8pwFoK5w2Jw--.18201S6 X-Coremail-Antispam: 1UD129KBjvJXoW7AFy8Gw4xtF1kGF4rCr1ftFb_yoW8Wryrpa 1DA3yrArW5A39Fq3WDJr4DZa45X3WqqryrKF9xCaySvayavF98Ww1kGF42qr4DGrZIgFnx ur4jvws8Kry0yrJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmY14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jryl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCY1x0262kKe7AKxVW8ZVWrXwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWU JVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42 IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIev Ja73UjIFyTuYvjTRNiSHDUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai Following patch will use gendisk to check if there are normal IO completed or inflight, to fix a problem in mdraid that foreground IO can be starved by background sync IO in later patches. Signed-off-by: Yu Kuai --- drivers/md/dm-raid.c | 3 +++ drivers/md/md.h | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 6adc55fd90d3..127138c61be5 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -14,6 +14,7 @@ #include "raid5.h" #include "raid10.h" #include "md-bitmap.h" +#include "dm-core.h" #include @@ -3308,6 +3309,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv) /* Disable/enable discard support on raid set. */ configure_discard_support(rs); + rs->md.dm_gendisk = ti->table->md->disk; mddev_unlock(&rs->md); return 0; @@ -3327,6 +3329,7 @@ static void raid_dtr(struct dm_target *ti) mddev_lock_nointr(&rs->md); md_stop(&rs->md); + rs->md.dm_gendisk = NULL; mddev_unlock(&rs->md); if (work_pending(&rs->md.event_work)) diff --git a/drivers/md/md.h b/drivers/md/md.h index 1cf00a04bcdd..9d55b4630077 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -404,7 +404,8 @@ struct mddev { * are happening, so run/ * takeover/stop are not safe */ - struct gendisk *gendisk; + struct gendisk *gendisk; /* mdraid gendisk */ + struct gendisk *dm_gendisk; /* dm-raid gendisk */ struct kobject kobj; int hold_active;