diff options
Diffstat (limited to 'block/blk-timeout.c')
| -rw-r--r-- | block/blk-timeout.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c index 69185ea9fae2..a09535377a94 100644 --- a/block/blk-timeout.c +++ b/block/blk-timeout.c @@ -73,11 +73,7 @@ ssize_t part_timeout_store(struct device *dev, struct device_attribute *attr, */ void blk_delete_timer(struct request *req) { - struct request_queue *q = req->q; - list_del_init(&req->timeout_list); - if (list_empty(&q->timeout_list)) - del_timer(&q->timeout); } static void blk_rq_timed_out(struct request *req) @@ -111,7 +107,7 @@ static void blk_rq_timed_out(struct request *req) void blk_rq_timed_out_timer(unsigned long data) { struct request_queue *q = (struct request_queue *) data; - unsigned long flags, uninitialized_var(next), next_set = 0; + unsigned long flags, next = 0; struct request *rq, *tmp; spin_lock_irqsave(q->queue_lock, flags); @@ -126,15 +122,18 @@ void blk_rq_timed_out_timer(unsigned long data) if (blk_mark_rq_complete(rq)) continue; blk_rq_timed_out(rq); + } else { + if (!next || time_after(next, rq->deadline)) + next = rq->deadline; } - if (!next_set) { - next = rq->deadline; - next_set = 1; - } else if (time_after(next, rq->deadline)) - next = rq->deadline; } - if (next_set && !list_empty(&q->timeout_list)) + /* + * next can never be 0 here with the list non-empty, since we always + * bump ->deadline to 1 so we can detect if the timer was ever added + * or not. See comment in blk_add_timer() + */ + if (next) mod_timer(&q->timeout, round_jiffies_up(next)); spin_unlock_irqrestore(q->queue_lock, flags); |