linux-kernel - [PATCH v2 6/8] md/md-multipath: enable io accounting

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Message-Id: <20230621165110.1498313-7-yukuai1@huaweicloud.com>
Date:   Thu, 22 Jun 2023 00:51:08 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     song@...nel.org, xni@...hat.com, pmenzel@...gen.mpg.de
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yukuai1@...weicloud.com, yi.zhang@...wei.com,
        yangerkun@...wei.com
Subject: [PATCH v2 6/8] md/md-multipath: enable io accounting

From: Yu Kuai <yukuai3@...wei.com>

use md_account_bio() to enable io accounting, also make sure
mddev_suspend() will wait for all io to be done.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
Reviewed-by: Xiao Ni <xni@...hat.com>
---
 drivers/md/md-multipath.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/md-multipath.c b/drivers/md/md-multipath.c
index 92c45be203d7..d22276870283 100644
--- a/drivers/md/md-multipath.c
+++ b/drivers/md/md-multipath.c
@@ -107,6 +107,7 @@ static bool multipath_make_request(struct mddev *mddev, struct bio * bio)
 	    && md_flush_request(mddev, bio))
 		return true;
 
+	md_account_bio(mddev, &bio);
 	mp_bh = mempool_alloc(&conf->pool, GFP_NOIO);
 
 	mp_bh->master_bio = bio;
-- 
2.39.2