linux-kernel - Re: [PATCH 2/2] mm/damon/Kconfig: Remove unnecessary PAGE

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Date:   Fri, 6 Aug 2021 19:01:41 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     SeongJae Park <sj38.park@...il.com>, akpm@...ux-foundation.org
Cc:     SeongJae Park <sjpark@...zon.de>, broonie@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-next@...r.kernel.org, mhocko@...e.cz,
        mm-commits@...r.kernel.org, sfr@...b.auug.org.au,
        willy@...radead.org, linux-damon@...zon.com
Subject: Re: [PATCH 2/2] mm/damon/Kconfig: Remove unnecessary PAGE_EXTENSION
 setup

On 8/6/21 2:51 AM, SeongJae Park wrote:
> From: SeongJae Park <sjpark@...zon.de>
> 
> Commit 13d49dbd0123 ("mm/damon: implement primitives for the virtual
> memory address spaces") of linux-mm[1] makes DAMON_VADDR to set
> PAGE_IDLE_FLAG.  PAGE_IDLE_FLAG sets PAGE_EXTENSION if !64BIT.  However,
> DAMON_VADDR do the same work again.  This commit removes the unnecessary
> duplicate.
> 
> [1] https://github.com/hnaz/linux-mm/commit/13d49dbd0123
> 
> Fixes: 13d49dbd0123 ("mm/damon: implement primitives for the virtual memory address spaces")
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Signed-off-by: SeongJae Park <sjpark@...zon.de>

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested

Thanks.

> ---
>   mm/damon/Kconfig | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/mm/damon/Kconfig b/mm/damon/Kconfig
> index 455995152697..37024798a97c 100644
> --- a/mm/damon/Kconfig
> +++ b/mm/damon/Kconfig
> @@ -27,7 +27,6 @@ config DAMON_KUNIT_TEST
>   config DAMON_VADDR
>   	bool "Data access monitoring primitives for virtual address spaces"
>   	depends on DAMON && MMU
> -	select PAGE_EXTENSION if !64BIT
>   	select PAGE_IDLE_FLAG
>   	help
>   	  This builds the default data access monitoring primitives for DAMON
> 


-- 
~Randy