linux-kernel - [PATCH v2 1/8] blk-throttle: Remove a meaningless parameter for throtl_downgrade

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Message-Id: <ea3aa9bc31fe1760b9876f5f0fa632ce4d0c1d95.1602128837.git.baolin.wang@linux.alibaba.com>
Date:   Thu,  8 Oct 2020 11:52:22 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     tj@...nel.org, axboe@...nel.dk
Cc:     baolin.wang@...ux.alibaba.com, baolin.wang7@...il.com,
        linux-block@...r.kernel.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/8] blk-throttle: Remove a meaningless parameter for throtl_downgrade_state()

The throtl_downgrade_state() is always used to change to LIMIT_LOW
limitation, thus remove the latter meaningless parameter which
indicates the limitation index.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 block/blk-throttle.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 36ba61c..4007b26 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1970,7 +1970,7 @@ static void throtl_upgrade_state(struct throtl_data *td)
 	queue_work(kthrotld_workqueue, &td->dispatch_work);
 }
 
-static void throtl_downgrade_state(struct throtl_data *td, int new)
+static void throtl_downgrade_state(struct throtl_data *td)
 {
 	td->scale /= 2;
 
@@ -1980,7 +1980,7 @@ static void throtl_downgrade_state(struct throtl_data *td, int new)
 		return;
 	}
 
-	td->limit_index = new;
+	td->limit_index = LIMIT_LOW;
 	td->low_downgrade_time = jiffies;
 }
 
@@ -2067,7 +2067,7 @@ static void throtl_downgrade_check(struct throtl_grp *tg)
 	 * cgroups
 	 */
 	if (throtl_hierarchy_can_downgrade(tg))
-		throtl_downgrade_state(tg->td, LIMIT_LOW);
+		throtl_downgrade_state(tg->td);
 
 	tg->last_bytes_disp[READ] = 0;
 	tg->last_bytes_disp[WRITE] = 0;
-- 
1.8.3.1