From: Guoqing Jiang Date: Mon, 17 Apr 2017 09:11:05 +0000 (+0800) Subject: md/raid10: wait up frozen array in handle_write_completed X-Git-Tag: v4.12-rc1~121^2^2~5 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cf25ae78fc50010f66b9be945017796da34c434d;p=karo-tx-linux.git 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 824e47daddbf ("RAID1: avoid unnecessary spin locks in I/O barrier code") which has already added the wake_up for raid1. Signed-off-by: Guoqing Jiang Reviewed-by: NeilBrown Signed-off-by: Shaohua Li --- diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 4167091eff9a..acb3f46f522f 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -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,