Re: [PATCH 09/11] blk-throttle: remove unnecessary check for validation of limit index

On Wed, Nov 23, 2022 at 02:03:59PM +0800, Kemeng Shi wrote:

We always keep limit index valid as following:
Max limit is always valid and low limit can only be invalidated in
blk_throtl_update_limit_valid. Each time low limit may become invalid
after blk_throtl_update_limit_valid is called, we will check and make
sure current limit index is valid.

It's reasonable to always keep limit index valid, so we can remove this
check.

It's not obvious to me that it's correct and I'm not sure what we're gaining
by removing this while risking subtle breakages.

-- 
tejun