linux-kernel - [PATCH 0/3] few memory offlining enhancements

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Message-Id: <20181211142741.2607-1-mhocko@kernel.org>
Date:   Tue, 11 Dec 2018 15:27:38 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
        David Hildenbrand <david@...hat.com>,
        Hugh Dickins <hughd@...gle.com>, Jan Kara <jack@...e.cz>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Michal Hocko <mhocko@...e.com>,
        Oscar Salvador <osalvador@...e.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        William Kucharski <william.kucharski@...cle.com>
Subject: [PATCH 0/3] few memory offlining enhancements

This has been posted as an RFC [1]. There was a general agreement for
these patches. I hope I have addressed all the review feedback.

Original cover:
I have been chasing memory offlining not making progress recently. On
the way I have noticed few weird decisions in the code. The migration
itself is restricted without a reasonable justification and the retry
loop around the migration is quite messy. This is addressed by patch 1
and patch 2.

Patch 3 is targeting on the faultaround code which has been a hot
candidate for the initial issue reported upstream [2] and that I am
debugging internally. It turned out to be not the main contributor
in the end but I believe we should address it regardless. See the patch
description for more details.

[1] http://lkml.kernel.org/r/20181120134323.13007-1-mhocko@kernel.org
[2] http://lkml.kernel.org/r/20181114070909.GB2653@MiWiFi-R3L-srv