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md/md-multipath: enable io accounting

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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@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230621165110.1498313-7-yukuai1@huaweicloud.com
This commit is contained in:
Yu Kuai 2023-06-22 00:51:08 +08:00 committed by Song Liu
parent 8204552383
commit bdf2b52136
1 changed files with 1 additions and 0 deletions
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drivers/md/md-multipath.c
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@ -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;