linux-kernel - Re: [PATCH] mm/damon: Remove redundant page validation

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Date:   Thu, 6 Jan 2022 21:02:27 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     SeongJae Park <sj@...nel.org>
Cc:     akpm@...ux-foundation.org, dan.carpenter@...cle.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/damon: Remove redundant page validation

Hi SeongJae,

On 1/6/2022 7:40 PM, SeongJae Park wrote:
> Hi Baolin,
> 
> 
> Thank you always for your great contribution!  As always, trivial comments
> below.
> 
> On Thu, 6 Jan 2022 18:40:11 +0800 Baolin Wang <baolin.wang@...ux.alibaba.com> wrote:
> 
>> It will never get a NULL page by pte_page(), thus remove the redundant
>> page validation to fix below Smatch static checker warning.
> 
> I guess the issue has reported in the open place[1], right?  I think it would
> be better to add the link in this commit message, so that future readers can
> read and learn from your discussion in the mail thread.
> 
> [1] https://lore.kernel.org/linux-mm/20220106091200.GA14564@kili/

OK.

> 
>>
>> mm/damon/vaddr.c:405 damon_hugetlb_mkold()
>> warn: 'page' can't be NULL.
> 
> Sorry for continuously obsessing about this trivial and personal taste, but...
> Could you please indent quoting blocks like above (hopefully with 4 spaces)?
> That makes the message much easier to read for me, and I'd like to keep the
> commit messages for DAMON consistent and easy to read, at least for me.

Sure, I will keep the rule of DAMON in mind.

Andrew, could you help to change the commit message format as SeongJae 
suggested when you apply this patch? Thanks.

> 
> Other than that,
> 
> Reviewed-by: SeongJae Park <sj@...nel.org>

Thanks.