From patchwork Tue Sep 15 15:18:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11778165 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 63CA1618 for ; Tue, 15 Sep 2020 22:51:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46C0E20795 for ; Tue, 15 Sep 2020 22:51:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="G85gpntu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727493AbgIOWu4 (ORCPT ); Tue, 15 Sep 2020 18:50:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727452AbgIOPmw (ORCPT ); Tue, 15 Sep 2020 11:42:52 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9FCA2C061353; Tue, 15 Sep 2020 08:31:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=H8hk1GyqLuto/InuvfMfeFX2w3KpymgO3wY2UL3PIN8=; b=G85gpntu6gkjqAxPzbBXn1TPsU y11SY7sUSuhngSFcPYtVr/LZm+YJCo6Voqylqfh8sLAltG9meKHeUczvlbpd7wKr6OOTNvsyqpmz9 0GQe9y16/yEDKxBMwekgvxO/KE73wqtrNWAbwUq7VtI2wfnbSpwqZvXXZTksF22Eg+yJQ7FPyz8WL aJgbgJidFZvWIy+orSJEqJMD1mQ1Dcujo0yNas/kP9SrXBCWhDEEs8cu6jIXn9ysXG18fXzt6inRR xWGFTImCzlHIVuNpZym8vogQqMCNCWgFwbjf1MFBTR21XiqPG6jLkCEsSqt5cHz/Dpg6u8hMFD00p 2+fF8gGQ==; Received: from 089144214092.atnat0023.highway.a1.net ([89.144.214.92] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kICvj-0001kM-3D; Tue, 15 Sep 2020 15:31:39 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , Johannes Thumshirn , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 05/12] md: update the optimal I/O size on reshape Date: Tue, 15 Sep 2020 17:18:22 +0200 Message-Id: <20200915151829.1767176-6-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200915151829.1767176-1-hch@lst.de> References: <20200915151829.1767176-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The raid5 and raid10 drivers currently update the read-ahead size, but not the optimal I/O size on reshape. To prepare for deriving the read-ahead size from the optimal I/O size make sure it is updated as well. Signed-off-by: Christoph Hellwig Acked-by: Song Liu Reviewed-by: Johannes Thumshirn --- drivers/md/raid10.c | 22 ++++++++++++++-------- drivers/md/raid5.c | 10 ++++++++-- 2 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index e8fa327339171c..9956a04ac13bd6 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3703,10 +3703,20 @@ static struct r10conf *setup_conf(struct mddev *mddev) return ERR_PTR(err); } +static void raid10_set_io_opt(struct r10conf *conf) +{ + int raid_disks = conf->geo.raid_disks; + + if (!(conf->geo.raid_disks % conf->geo.near_copies)) + raid_disks /= conf->geo.near_copies; + blk_queue_io_opt(conf->mddev->queue, (conf->mddev->chunk_sectors << 9) * + raid_disks); +} + static int raid10_run(struct mddev *mddev) { struct r10conf *conf; - int i, disk_idx, chunk_size; + int i, disk_idx; struct raid10_info *disk; struct md_rdev *rdev; sector_t size; @@ -3742,18 +3752,13 @@ static int raid10_run(struct mddev *mddev) mddev->thread = conf->thread; conf->thread = NULL; - chunk_size = mddev->chunk_sectors << 9; if (mddev->queue) { blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors); blk_queue_max_write_same_sectors(mddev->queue, 0); blk_queue_max_write_zeroes_sectors(mddev->queue, 0); - blk_queue_io_min(mddev->queue, chunk_size); - if (conf->geo.raid_disks % conf->geo.near_copies) - blk_queue_io_opt(mddev->queue, chunk_size * conf->geo.raid_disks); - else - blk_queue_io_opt(mddev->queue, chunk_size * - (conf->geo.raid_disks / conf->geo.near_copies)); + blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9); + raid10_set_io_opt(conf); } rdev_for_each(rdev, mddev) { @@ -4727,6 +4732,7 @@ static void end_reshape(struct r10conf *conf) stripe /= conf->geo.near_copies; if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + raid10_set_io_opt(conf); } conf->fullsync = 0; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 225380efd1e24f..9a7d1250894ef1 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7232,6 +7232,12 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded return 0; } +static void raid5_set_io_opt(struct r5conf *conf) +{ + blk_queue_io_opt(conf->mddev->queue, (conf->chunk_sectors << 9) * + (conf->raid_disks - conf->max_degraded)); +} + static int raid5_run(struct mddev *mddev) { struct r5conf *conf; @@ -7521,8 +7527,7 @@ static int raid5_run(struct mddev *mddev) chunk_size = mddev->chunk_sectors << 9; blk_queue_io_min(mddev->queue, chunk_size); - blk_queue_io_opt(mddev->queue, chunk_size * - (conf->raid_disks - conf->max_degraded)); + raid5_set_io_opt(conf); mddev->queue->limits.raid_partial_stripes_expensive = 1; /* * We can only discard a whole stripe. It doesn't make sense to @@ -8115,6 +8120,7 @@ static void end_reshape(struct r5conf *conf) / PAGE_SIZE); if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + raid5_set_io_opt(conf); } } }