Commit cf25ae78 authored Apr 17, 2017 by Guoqing Jiang Committed by Shaohua Li Apr 20, 2017

md/raid10: wait up frozen array in handle_write_completed



Since nr_queued is changed, we need to call wake_up here
if the array is already frozen and waiting for condition
"nr_pending == nr_queued + extra" to be true.

And commit 824e47da ("RAID1: avoid unnecessary spin
locks in I/O barrier code") which has already added the
wake_up for raid1.

Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

parent fc6d2a3c

drivers/md/raid10.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -2704,6 +2704,11 @@ static void handle_write_completed(struct r10conf conf, struct r10bio r10_bio)
		list_add(&r10_bio->retry_list, &conf->bio_end_io_list);
		conf->nr_queued++;
		spin_unlock_irq(&conf->device_lock);
		/*
		* In case freeze_array() is waiting for condition
		* nr_pending == nr_queued + extra to be true.
		*/
		wake_up(&conf->wait_barrier);
		md_wakeup_thread(conf->mddev->thread);
		} else {
		if (test_bit(R10BIO_WriteError,

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