md/raid1: avoid soft lockup under high load

As all I/O is being pushed through a kernel thread the softlockup
watchdog might be triggered under high load.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Song Liu <songliubraving@fb.com>

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index bb29aeefcbd0ff528507a4b7e3e3c0e32c02bad4..a409ab6f30bc33375561d4cebc20c5e20f9435ba 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -819,6 +819,7 @@ static void flush_bio_list(struct r1conf *conf, struct bio *bio)
                else
                        generic_make_request(bio);
                bio = next;
+               cond_resched();
        }
 }