block: add comment in blk_rq_timed_out() about why next can not be 0 (65d3618c) · Commits · e / devices / android_kernel_teracube_2e

block/blk-timeout.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -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);