From patchwork Wed Jun 21 16:51:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13286881 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 72490C001DE for ; Wed, 21 Jun 2023 08:53:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231805AbjFUIxH (ORCPT ); Wed, 21 Jun 2023 04:53:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231760AbjFUIws (ORCPT ); Wed, 21 Jun 2023 04:52:48 -0400 Received: from dggsgout12.his.huawei.com (unknown [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A718FE60; Wed, 21 Jun 2023 01:52:46 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4QmHMD4gMLz4f3ys0; Wed, 21 Jun 2023 16:52:40 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgD3rLBWupJkbVnFMA--.53622S9; Wed, 21 Jun 2023 16:52:42 +0800 (CST) From: Yu Kuai To: song@kernel.org, xni@redhat.com, pmenzel@molgen.mpg.de 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 5/8] md/raid10: switch to use md_account_bio() for io accounting Date: Thu, 22 Jun 2023 00:51:07 +0800 Message-Id: <20230621165110.1498313-6-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230621165110.1498313-1-yukuai1@huaweicloud.com> References: <20230621165110.1498313-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgD3rLBWupJkbVnFMA--.53622S9 X-Coremail-Antispam: 1UD129KBjvJXoWxCF1DCFW5ZFy5Gry8Wr4DArb_yoW5tr4fp3 yDCa4rArW5J3yUuw1DJFWDuwnYyayvq3yayrWxJw13A3W3XF98KF18XFWFqrn8ZFZ5ur9r Z3Z09rsrCwsrtFDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUP214x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_JF0E3s1l82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0 rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6x IIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xv wVC2z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFc xC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_ Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2 IErcIFxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JV WxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7sRiVb yDUUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org From: Yu Kuai Make sure that 'active_io' will represent inflight io instead of io that is dispatching, and io accounting from all levels will be consistent. Signed-off-by: Yu Kuai Reviewed-by: Xiao Ni --- drivers/md/raid10.c | 20 +++++++++----------- drivers/md/raid10.h | 1 - 2 files changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 79067769e44b..69f6d7b1e600 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -325,8 +325,6 @@ static void raid_end_bio_io(struct r10bio *r10_bio) if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) bio->bi_status = BLK_STS_IOERR; - if (r10_bio->start_time) - bio_end_io_acct(bio, r10_bio->start_time); bio_endio(bio); /* * Wake up any possible resync thread that waits for the device @@ -1172,7 +1170,7 @@ static bool regular_request_wait(struct mddev *mddev, struct r10conf *conf, } static void raid10_read_request(struct mddev *mddev, struct bio *bio, - struct r10bio *r10_bio) + struct r10bio *r10_bio, bool io_accounting) { struct r10conf *conf = mddev->private; struct bio *read_bio; @@ -1243,9 +1241,10 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio, } slot = r10_bio->read_slot; - if (!r10_bio->start_time && - blk_queue_io_stat(bio->bi_bdev->bd_disk->queue)) - r10_bio->start_time = bio_start_io_acct(bio); + if (io_accounting) { + md_account_bio(mddev, &bio); + r10_bio->master_bio = bio; + } read_bio = bio_alloc_clone(rdev->bdev, bio, gfp, &mddev->bio_set); r10_bio->devs[slot].bio = read_bio; @@ -1543,8 +1542,8 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, r10_bio->master_bio = bio; } - if (blk_queue_io_stat(bio->bi_bdev->bd_disk->queue)) - r10_bio->start_time = bio_start_io_acct(bio); + md_account_bio(mddev, &bio); + r10_bio->master_bio = bio; atomic_set(&r10_bio->remaining, 1); md_bitmap_startwrite(mddev->bitmap, r10_bio->sector, r10_bio->sectors, 0); @@ -1571,12 +1570,11 @@ static void __make_request(struct mddev *mddev, struct bio *bio, int sectors) r10_bio->sector = bio->bi_iter.bi_sector; r10_bio->state = 0; r10_bio->read_slot = -1; - r10_bio->start_time = 0; memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * conf->geo.raid_disks); if (bio_data_dir(bio) == READ) - raid10_read_request(mddev, bio, r10_bio); + raid10_read_request(mddev, bio, r10_bio, true); else raid10_write_request(mddev, bio, r10_bio); } @@ -2985,7 +2983,7 @@ static void handle_read_error(struct mddev *mddev, struct r10bio *r10_bio) rdev_dec_pending(rdev, mddev); r10_bio->state = 0; - raid10_read_request(mddev, r10_bio->master_bio, r10_bio); + raid10_read_request(mddev, r10_bio->master_bio, r10_bio, false); /* * allow_barrier after re-submit to ensure no sync io * can be issued while regular io pending. diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h index 63e48b11b552..2e75e88d0802 100644 --- a/drivers/md/raid10.h +++ b/drivers/md/raid10.h @@ -123,7 +123,6 @@ struct r10bio { sector_t sector; /* virtual sector number */ int sectors; unsigned long state; - unsigned long start_time; struct mddev *mddev; /* * original bio going to /dev/mdx