linux-kernel - Re: [PATCH V2 1/2] sysctl: Limit the value of interface compact

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Message-ID: <ZAjo0HaUTCzQtN1Q@bombadil.infradead.org>
Date:   Wed, 8 Mar 2023 11:58:08 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     ye.xingchen@....com.cn, keescook@...omium.org, yzaikin@...gle.com,
        akpm@...ux-foundation.org, linmiaohe@...wei.com,
        chi.minghao@....com.cn, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH V2 1/2] sysctl: Limit the value of interface
 compact_memory

On Wed, Mar 08, 2023 at 11:21:36AM +0100, Vlastimil Babka wrote:
> 
> 
> On 3/6/23 07:07, ye.xingchen@....com.cn wrote:
> > From: Minghao Chi <chi.minghao@....com.cn>
> > 
> > In Documentation/admin-guide/sysctl/vm.rst:109 say: when 1 is written
> > to the file, all zones are compacted such that free memory is available
> > in contiguous blocks where possible.
> > So limit the value of interface compact_memory to 1.
> > 
> > Link: https://lore.kernel.org/all/ZAJwoXJCzfk1WIBx@bombadil.infradead.org/
> 
> I don't think the split to two patches you did, achieves Luis' request.
> 
> IIUC his request was to move the compaction entries out of sysctl.c?

Yes, thanks Vlastimil, just git log kernel/sysctl.c and you'll see tons
of examples.

  Luis