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md/raid10: submit bio directly to replacement disk
Commit 57c67df(md/raid10: submit IO from originating thread instead of md thread) submits bio directly for normal disks but not for replacement disks. There is no point we shouldn't do this for replacement disks. Cc: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
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commit
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1 changed files with 16 additions and 3 deletions
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@ -1477,11 +1477,24 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
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mbio->bi_bdev = (void*)rdev;
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atomic_inc(&r10_bio->remaining);
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cb = blk_check_plugged(raid10_unplug, mddev,
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sizeof(*plug));
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if (cb)
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plug = container_of(cb, struct raid10_plug_cb,
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cb);
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else
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plug = NULL;
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spin_lock_irqsave(&conf->device_lock, flags);
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bio_list_add(&conf->pending_bio_list, mbio);
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conf->pending_count++;
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if (plug) {
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bio_list_add(&plug->pending, mbio);
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plug->pending_cnt++;
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} else {
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bio_list_add(&conf->pending_bio_list, mbio);
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conf->pending_count++;
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}
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spin_unlock_irqrestore(&conf->device_lock, flags);
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if (!mddev_check_plugged(mddev))
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if (!plug)
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md_wakeup_thread(mddev->thread);
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}
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}
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