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Message-Id: <20221216111230.3638832-10-shikemeng@huaweicloud.com>
Date: Fri, 16 Dec 2022 19:12:29 +0800
From: Kemeng Shi <shikemeng@...weicloud.com>
To: jack@...e.cz, paolo.valente@...aro.org, tj@...nel.org,
josef@...icpanda.com, axboe@...nel.dk
Cc: cgroups@...r.kernel.org, linux-block@...r.kernel.org,
linux-kernel@...r.kernel.org, linfeilong@...wei.com,
liuzhiqiang@...com, shikemeng@...weicloud.com
Subject: [PATCH v2 09/10] block, bfq: remove unused bfq_wr_max_time in struct bfq_data
bfqd->bfq_wr_max_time is set to 0 in bfq_init_queue and is never changed.
It is only used in bfq_wr_duration when bfq_wr_max_time > 0 which never
meets, so bfqd->bfq_wr_max_time is not used actually. Just remove it.
Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
---
block/bfq-iosched.c | 4 ----
block/bfq-iosched.h | 2 --
2 files changed, 6 deletions(-)
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 195cdc6be087..91bc68fba72d 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -1068,9 +1068,6 @@ static unsigned int bfq_wr_duration(struct bfq_data *bfqd)
{
u64 dur;
- if (bfqd->bfq_wr_max_time > 0)
- return bfqd->bfq_wr_max_time;
-
dur = bfqd->rate_dur_prod;
do_div(dur, bfqd->peak_rate);
@@ -7079,7 +7076,6 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e)
*/
bfqd->bfq_wr_coeff = 30;
bfqd->bfq_wr_rt_max_time = msecs_to_jiffies(300);
- bfqd->bfq_wr_max_time = 0;
bfqd->bfq_wr_min_idle_time = msecs_to_jiffies(2000);
bfqd->bfq_wr_min_inter_arr_async = msecs_to_jiffies(500);
bfqd->bfq_wr_max_softrt_rate = 7000; /*
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 9fa89577322d..0b1a5438046a 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -719,8 +719,6 @@ struct bfq_data {
* is multiplied.
*/
unsigned int bfq_wr_coeff;
- /* maximum duration of a weight-raising period (jiffies) */
- unsigned int bfq_wr_max_time;
/* Maximum weight-raising duration for soft real-time processes */
unsigned int bfq_wr_rt_max_time;
--
2.30.0
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