[PATCH] md: all hot-add and hot-remove of md intent logging bitmaps

[linux-2.6] / drivers / md / raid1.c

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index ace41c571aeb3f2e842d65fc2fa9959240bf4054..ba643e4bfac99ce86801fa163640e8efe266070c 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1565,6 +1565,35 @@ static int raid1_reshape(mddev_t *mddev, int raid_disks)
        return 0;
 }
 
+void raid1_quiesce(mddev_t *mddev, int state)
+{
+       conf_t *conf = mddev_to_conf(mddev);
+
+       switch(state) {
+       case 0:
+               spin_lock_irq(&conf->resync_lock);
+               conf->barrier++;
+               wait_event_lock_irq(conf->wait_idle, !conf->nr_pending,
+                                   conf->resync_lock, raid1_unplug(mddev->queue));
+               spin_unlock_irq(&conf->resync_lock);
+               break;
+       case 1:
+               spin_lock_irq(&conf->resync_lock);
+               conf->barrier--;
+               spin_unlock_irq(&conf->resync_lock);
+               wake_up(&conf->wait_resume);
+               wake_up(&conf->wait_idle);
+               break;
+       }
+       if (mddev->thread) {
+               if (mddev->bitmap)
+                       mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
+               else
+                       mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
+               md_wakeup_thread(mddev->thread);
+       }
+}
+
 
 static mdk_personality_t raid1_personality =
 {
@@ -1581,6 +1610,7 @@ static mdk_personality_t raid1_personality =
        .sync_request   = sync_request,
        .resize         = raid1_resize,
        .reshape        = raid1_reshape,
+       .quiesce        = raid1_quiesce,
 };
 
 static int __init raid_init(void)