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Date: Wed, 22 Aug 2018 11:56:47 -0400
From: Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 0/2] fix for "pathological THP behavior"
Message-ID: <20180822155647.GQ13047@redhat.com>
References: <20180820032204.9591-1-aarcange@redhat.com>
 <20180820115818.mmeayjkplux2z6im@kshutemo-mobl1>
 <20180820151905.GB13047@redhat.com>
 <6120e1b6-b4d2-96cb-2555-d8fab65c23c8@suse.cz>
 <20180822092440.GH29735@dhcp22.suse.cz>
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To: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>, "Kirill A. Shutemov" <kirill@shutemov.name>, Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org, Alex Williamson <alex.williamson@redhat.com>, David Rientjes <rientjes@google.com>

On Wed, Aug 22, 2018 at 11:24:40AM +0200, Michal Hocko wrote:
> abuse elsewhere. Like here for the THP. I am pretty sure that the
> intention was not to stick to a specific node but rather all local nodes
> within the reclaim distance (or other unit to define that nodes are
> sufficiently close).

If it meant more than one node but still not all, the same problem
would then happen after the app used all RAM from those "sufficiently
close" nodes. So overall it would make zero difference because it
would just kick the bug down the road a bit more.

Thanks,
Andrea