raid1: include bio_end_io_list in nr_queued to prevent freeze_array hang

[deliverable/linux.git] / drivers / md / raid1.c

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d1d5363b17f4d1ac0da467a015f2c042f9f1e4ee..39fb21e048e642dd2bf6d6729a9e8c0cd61310a9 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2274,6 +2274,7 @@ static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio)
        if (fail) {
                spin_lock_irq(&conf->device_lock);
                list_add(&r1_bio->retry_list, &conf->bio_end_io_list);
+               conf->nr_queued++;
                spin_unlock_irq(&conf->device_lock);
                md_wakeup_thread(conf->mddev->thread);
        } else {
@@ -2391,8 +2392,10 @@ static void raid1d(struct md_thread *thread)
                LIST_HEAD(tmp);
                spin_lock_irqsave(&conf->device_lock, flags);
                if (!test_bit(MD_CHANGE_PENDING, &mddev->flags)) {
-                       list_add(&tmp, &conf->bio_end_io_list);
-                       list_del_init(&conf->bio_end_io_list);
+                       while (!list_empty(&conf->bio_end_io_list)) {
+                               list_move(conf->bio_end_io_list.prev, &tmp);
+                               conf->nr_queued--;
+                       }
                }
                spin_unlock_irqrestore(&conf->device_lock, flags);
                while (!list_empty(&tmp)) {