[PATCH 1/4] blk-throttle: Remove a meaningless parameter for throtl_downgrade_state()

[Baolin Wang]

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.w...@linux.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