diff options
| -rw-r--r-- | block/blk-throttle.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index a3b3ebc72dd4..880701d0106f 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -1137,12 +1137,22 @@ static void throtl_pending_timer_fn(struct timer_list *t) struct throtl_service_queue *sq = from_timer(sq, t, pending_timer); struct throtl_grp *tg = sq_to_tg(sq); struct throtl_data *td = sq_to_td(sq); - struct request_queue *q = td->queue; struct throtl_service_queue *parent_sq; + struct request_queue *q; bool dispatched; int ret; + /* throtl_data may be gone, so figure out request queue by blkg */ + if (tg) + q = tg->pd.blkg->q; + else + q = td->queue; + spin_lock_irq(&q->queue_lock); + + if (!q->root_blkg) + goto out_unlock; + if (throtl_can_upgrade(td, NULL)) throtl_upgrade_state(td); |