diff options
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 393eaa5..9e386d9 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3449,7 +3449,6 @@ static void cfq_exit_queue(struct elevator_queue *e) { struct cfq_data *cfqd = e->elevator_data; struct request_queue *q = cfqd->queue; - bool wait = false; cfq_shutdown_timer_wq(cfqd); @@ -3462,31 +3461,8 @@ static void cfq_exit_queue(struct elevator_queue *e) spin_unlock_irq(q->queue_lock); -#ifdef CONFIG_BLK_CGROUP - /* - * If there are groups which we could not unlink from blkcg list, - * wait for a rcu period for them to be freed. - */ - spin_lock_irq(q->queue_lock); - wait = q->nr_blkgs; - spin_unlock_irq(q->queue_lock); -#endif cfq_shutdown_timer_wq(cfqd); - /* - * Wait for cfqg->blkg->key accessors to exit their grace periods. - * Do this wait only if there are other unlinked groups out - * there. This can happen if cgroup deletion path claimed the - * responsibility of cleaning up a group before queue cleanup code - * get to the group. - * - * Do not call synchronize_rcu() unconditionally as there are drivers - * which create/delete request queue hundreds of times during scan/boot - * and synchronize_rcu() can take significant time and slow down boot. - */ - if (wait) - synchronize_rcu(); - #ifndef CONFIG_CFQ_GROUP_IOSCHED kfree(cfqd->root_group); #endif |
