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authorShaohua Li <shli@fb.com>2017-02-23 12:26:41 -0800
committerShaohua Li <shli@fb.com>2017-03-09 09:01:14 -0800
commit6d399783e9d4e9bd44931501948059d24ad96ff8 (patch)
tree729d60ef731b8f042666df7bf434932dcfec5da9 /drivers/md
parentea6200e84182989a3cce9687cf79a23ac44ec4db (diff)
downloadlinux-6d399783e9d4e9bd44931501948059d24ad96ff8.tar.bz2
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/raid10.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 063c43d83b72..1443305613c5 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1477,11 +1477,24 @@ retry_write:
mbio->bi_bdev = (void*)rdev;
atomic_inc(&r10_bio->remaining);
+
+ cb = blk_check_plugged(raid10_unplug, mddev,
+ sizeof(*plug));
+ if (cb)
+ plug = container_of(cb, struct raid10_plug_cb,
+ cb);
+ else
+ plug = NULL;
spin_lock_irqsave(&conf->device_lock, flags);
- bio_list_add(&conf->pending_bio_list, mbio);
- conf->pending_count++;
+ if (plug) {
+ bio_list_add(&plug->pending, mbio);
+ plug->pending_cnt++;
+ } else {
+ bio_list_add(&conf->pending_bio_list, mbio);
+ conf->pending_count++;
+ }
spin_unlock_irqrestore(&conf->device_lock, flags);
- if (!mddev_check_plugged(mddev))
+ if (!plug)
md_wakeup_thread(mddev->thread);
}
}