From ab1fb47e33dc7754a7593181ffe0742c7105ea9a Mon Sep 17 00:00:00 2001
From: Paolo Valente <paolo.valente@linaro.org>
Date: Fri, 22 Jan 2021 19:19:45 +0100
Subject: block, bfq: increase time window for waker detection

Tests on slower machines showed current window to be way too
small. This commit increases it.

Tested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 block/bfq-iosched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'block')

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index fdc5e163b2fe..43e2c39cf7b5 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -1931,7 +1931,7 @@ static void bfq_add_request(struct request *rq)
 		if (bfqd->last_completed_rq_bfqq &&
 		    !bfq_bfqq_has_short_ttime(bfqq) &&
 		    ktime_get_ns() - bfqd->last_completion <
-		    200 * NSEC_PER_USEC) {
+		    4 * NSEC_PER_MSEC) {
 			if (bfqd->last_completed_rq_bfqq != bfqq &&
 			    bfqd->last_completed_rq_bfqq !=
 			    bfqq->waker_bfqq) {
-- 
cgit v1.2.3