Commit 75274551 authored by xiaobing tu's avatar xiaobing tu Committed by Jens Axboe
Browse files

deadline: Allow 0ms deadline latency, increase the read speed 



Change a timer compare from after to after-equals, thus allowing
0 timeout and making deadline schedule FIFO.

Signed-off-by: default avatarxiaobing tu <xiaobing.tu@intel.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 5f6f38db

block/deadline-iosched.c

+1 −1
Original line number Diff line number Diff line
@@ -230,7 +230,7 @@ static inline int deadline_check_fifo(struct deadline_data *dd, int ddir) 
	/*

	 * rq is expired!

	 */

	if (time_after(jiffies, rq_fifo_time(rq)))

	if (time_after_eq(jiffies, rq_fifo_time(rq)))

		return 1;



	return 0;