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Subject: Re: [PATCH] mm/vmscan: add vm_swappiness configuration knobs
To:     Michal Hocko <mhocko@kernel.org>
Cc:     Ivan Teterevkov <ivan.teterevkov@nutanix.com>,
        "corbet@lwn.net" <corbet@lwn.net>,
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        <pawan.kumar.gupta@linux.intel.com>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
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From:   Vlastimil Babka <vbabka@suse.cz>
Message-ID: <4e08008f-bf20-6a9c-0ffb-f6438c326612@suse.cz>
Date:   Tue, 17 Mar 2020 15:51:06 +0100
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On 3/17/20 9:29 AM, Michal Hocko wrote:
> On Mon 16-03-20 15:53:21, Vlastimil Babka wrote:
>> On 3/12/20 2:26 PM, Michal Hocko wrote:
> 
> This sounds like a much better idea than a case by case handling. I
> wouldn't be surprised if some kernel parameters would duplicate sysctl
> values. I cannot judge the implementation unfortunately but from a quick
> glance it makes sense to me. Especially where you hooked it into because
> not all handlers are simple setters for a global value. Some of them
> have a much more complicated logic which requires a lot of
> infrastructure to be set up already. So putting do_sysctl_args right
> before the init is executed should be good enough.
> 
> Care to post an RFC to a larger audience? Let's see where we get from
> there.

FYI done: (I didn't CC everybody from this thread)

https://lore.kernel.org/linux-api/20200317132105.24555-1-vbabka@suse.cz/