[PATCH v2 07/10] blk-throttle: remove incorrect comment for tg_last_low_overflow_time

Kemeng Shi
2022-11-29T03:02:36Z

Function tg_last_low_overflow_time is called with intermediate node as
following:
throtl_hierarchy_can_downgrade
throtl_tg_can_downgrade
tg_last_low_overflow_time

throtl_hierarchy_can_upgrade
throtl_tg_can_upgrade
tg_last_low_overflow_time

throtl_hierarchy_can_downgrade/throtl_hierarchy_can_upgrade will traverse
from leaf node to sub-root node and pass traversed intermediate node
to tg_last_low_overflow_time.

No such limit could be found from context and implementation of
tg_last_low_overflow_time, so remove this limit in comment.

Signed-off-by: Kemeng Shi <shikemeng@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
---
block/blk-throttle.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 4b11099625da..3ddd8a15aa3f 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1762,7 +1762,6 @@ static unsigned long __tg_last_low_overflow_time(struct throtl_grp *tg)
return min(rtime, wtime);
}

-/* tg should not be an intermediate node */
static unsigned long tg_last_low_overflow_time(struct throtl_grp *tg)
{
struct throtl_service_queue *parent_sq;
--
2.30.0