Re: [PATCH v2] f2fs: fix the periodic wakeups of discard thread

[Chao Yu]

On 2021/4/6 17:09, Sahitya Tummala wrote:
> Fix the unnecessary periodic wakeups of discard thread that happens under
> below two conditions -
>
> 1. When f2fs is heavily utilized over 80%, the current discard policy
> sets the max sleep timeout of discard thread as 50ms
> (DEF_MIN_DISCARD_ISSUE_TIME). But this is set even when there are
> no pending discard commands to be issued.
>
> 2. In the issue_discard_thread() path when there are no pending discard
> commands, it fails to reset the wait_ms to max timeout value.
>
> Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>

Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>

Thanks,