diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index e575e74aabf5..aff9118ff697 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8087,7 +8087,8 @@ void md_wakeup_thread(struct md_thread __rcu *thread) if (t) { pr_debug("md: waking up MD thread %s.\n", t->tsk->comm); set_bit(THREAD_WAKEUP, &t->flags); - wake_up(&t->wqueue); + if (wq_has_sleeper(&t->wqueue)) + wake_up(&t->wqueue); } rcu_read_unlock(); } @@ -8582,6 +8583,10 @@ static int is_mddev_idle(struct mddev *mddev, int init) rcu_read_lock(); rdev_for_each_rcu(rdev, mddev) { struct gendisk *disk = rdev->bdev->bd_disk; + + if (!init && !blk_queue_io_stat(disk->queue)) + continue; + curr_events = (int)part_stat_read_accum(disk->part0, sectors) - atomic_read(&disk->sync_io); /* sync IO will cause sync_io to increase before the disk_stats |