Commit 65d3618c authored by Jens Axboe's avatar Jens Axboe

block: add comment in blk_rq_timed_out() about why next can not be 0

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 565e411d
......@@ -132,7 +132,12 @@ void blk_rq_timed_out_timer(unsigned long data)
}
}
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);
......
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