From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guoqing Jiang Subject: [PATCH] md/raid10: wait up frozen array in handle_write_completed Date: Mon, 17 Apr 2017 17:11:05 +0800 Message-ID: <20170417091105.27180-1-gqjiang@suse.com> Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: shli@kernel.org, neilb@suse.com List-Id: linux-raid.ids 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 --- drivers/md/raid10.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 4167091..acb3f46 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, -- 2.10.0