linux-kernel - Re: [patch for-5.3 0/4] revert immediate fallback to remote hugepages

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Message-Id: <20191029143351.95f781f09a9fbf254163d728@linux-foundation.org>
Date:   Tue, 29 Oct 2019 14:33:51 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        David Rientjes <rientjes@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Mel Gorman <mgorman@...e.de>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>
Subject: Re: [patch for-5.3 0/4] revert immediate fallback to remote
 hugepages

On Tue, 29 Oct 2019 16:15:49 +0100 Michal Hocko <mhocko@...nel.org> wrote:

> > 
> > 1. local node only THP allocation with no reclaim, just compaction.
> > 2. for madvised VMA's or when synchronous compaction is enabled always - THP
> >    allocation from any node with effort determined by global defrag setting
> >    and VMA madvise
> > 3. fallback to base pages on any node
> > 
> > Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
> 
> I've given this a try and here are the results of my previous testcase
> (memory full of page cache).

Thanks, I'll queue this for some more testing.  At some point we should
decide on a suitable set of Fixes: tags and a backporting strategy, if any?