linux-kernel - Re: [PATCH v2] Docs/mm/damon/design: remove the details for pageout as paddr doesn't use MADV

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Date: Sat, 24 Feb 2024 15:06:26 -0800
From: SeongJae Park <sj@...nel.org>
To: Barry Song <21cnbao@...il.com>
Cc: corbet@....net,
	linux-mm@...ck.org,
	akpm@...ux-foundation.org,
	damon@...ts.linux.dev,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Barry Song <v-songbaohua@...o.com>,
	SeongJae Park <sj@...nel.org>,
	Minchan Kim <minchan@...nel.org>,
	Michal Hocko <mhocko@...e.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [PATCH v2] Docs/mm/damon/design: remove the details for pageout as paddr doesn't use MADV_PAGEOUT

Hi Barry,

On Sun, 25 Feb 2024 11:47:51 +1300 Barry Song <21cnbao@...il.com> wrote:

> From: Barry Song <v-songbaohua@...o.com>
> 
> The doc needs fix. As only in the case of virtual address, we
> are calling madvise() with MADV_PAGEOUT. But in the case of
> physical address, we are calling reclaim_pages() directly.
> MADV_PAGEOUT on virtual address is much more aggresive to
> reclaim memory compared to reclaim_pages() on paddr region.
> This patch removes the details so that the description can
> apply to both cases. And we don't need to couple with the
> implementation details.
> 
> Cc: SeongJae Park <sj@...nel.org>
> Cc: Minchan Kim <minchan@...nel.org>
> Cc: Michal Hocko <mhocko@...e.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Signed-off-by: Barry Song <v-songbaohua@...o.com>
> ---
>  -v2: decouple with the details according to SeongJae
>  -v1: https://lore.kernel.org/linux-mm/20240224215023.5271-1-21cnbao@gmail.com/

Thank you so much for your work!

Reviewed-by: SeongJae Park <sj@...nel.org>


Thanks,
SJ

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