linux-kernel - Re: [PATCH] docs/vm: clarify overcommit amount sysctl behavior

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Message-ID: <8735msduvj.fsf@meer.lwn.net>
Date:   Thu, 16 Dec 2021 15:53:36 -0700
From:   Jonathan Corbet <corbet@....net>
To:     David Hildenbrand <david@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Anssi Hannula <anssi.hannula@....fi>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH] docs/vm: clarify overcommit amount sysctl behavior

David Hildenbrand <david@...hat.com> writes:

> On 11.12.21 23:21, Matthew Wilcox wrote:
>> On Sat, Dec 11, 2021 at 09:41:59PM +0200, Anssi Hannula wrote:
>>> Documentation/vm/overcommit-accounting.rst says that the overcommit
>>> amount can be set via vm.overcommit_ratio and vm.overcommit_kbytes.
>>>
>>> Add a clarification that those only take effect in overcommit handling
>>> mode 2 ("Don't overcommit"), i.e. they do not act as an "additional"
>>> limit that is always enforced.
>>>
>>> Signed-off-by: Anssi Hannula <anssi.hannula@....fi>
>>> ---
>> 
>> Simple and clear improvement, IMO.  Cc'ing linux-mm to get more eyes on
>> it.
>
> As I had the same idea to just make this clearer in the context of
> advanced documentation for virtio-mem, so I approve :)
>
> Reviewed-by: David Hildenbrand <david@...hat.com>

Applied, thanks.

jon