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Date: Fri, 9 Sep 2022 11:36:34 +0200
From: Jan Kara <jack@...e.cz>
To: Miaohe Lin <linmiaohe@...wei.com>
Cc: axboe@...nel.dk, dhowells@...hat.com, vbabka@...e.cz,
willy@...radead.org, akpm@...ux-foundation.org,
zhanglianjie@...ontech.com, neilb@...e.de, jack@...e.cz,
bvanassche@....org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] writeback: remove unused macro DIRTY_FULL_SCOPE
On Fri 09-09-22 10:57:11, Miaohe Lin wrote:
> It's introduced but never used. Remove it.
>
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
Looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@...e.cz>
Honza
> ---
> include/linux/writeback.h | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/include/linux/writeback.h b/include/linux/writeback.h
> index 3f045f6d6c4f..06f9291b6fd5 100644
> --- a/include/linux/writeback.h
> +++ b/include/linux/writeback.h
> @@ -17,20 +17,12 @@ struct bio;
> DECLARE_PER_CPU(int, dirty_throttle_leaks);
>
> /*
> - * The 1/4 region under the global dirty thresh is for smooth dirty throttling:
> - *
> - * (thresh - thresh/DIRTY_FULL_SCOPE, thresh)
> - *
> - * Further beyond, all dirtier tasks will enter a loop waiting (possibly long
> - * time) for the dirty pages to drop, unless written enough pages.
> - *
> * The global dirty threshold is normally equal to the global dirty limit,
> * except when the system suddenly allocates a lot of anonymous memory and
> * knocks down the global dirty threshold quickly, in which case the global
> * dirty limit will follow down slowly to prevent livelocking all dirtier tasks.
> */
> #define DIRTY_SCOPE 8
> -#define DIRTY_FULL_SCOPE (DIRTY_SCOPE / 2)
>
> struct backing_dev_info;
>
> --
> 2.23.0
>
--
Jan Kara <jack@...e.com>
SUSE Labs, CR
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