linux-kernel - [v2 0/1] discard memblock data later

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Date:   Fri, 11 Aug 2017 17:05:53 -0400
From:   Pavel Tatashin <pasha.tatashin@...cle.com>
To:     steven.sistare@...cle.com, daniel.m.jordan@...cle.com,
        bob.picco@...cle.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, mhocko@...nel.org, mgorman@...hsingularity.net
Subject: [v2 0/1] discard memblock data later

Changelog:
v1 - v2
        - Removed debugging change to INIT_MEMBLOCK_REGIONS

This fixes a problem with use after free that can happen when there are
many physical regions and deferred pages are enabled.

Also, this fix is needed for my upcoming improvements to deferred pages:
"complete deferred page initialization", where we do not zero the backing
struct page memory.

Pavel Tatashin (1):
  mm: discard memblock data later

 include/linux/memblock.h |  6 ++++--
 mm/memblock.c            | 38 +++++++++++++++++---------------------
 mm/nobootmem.c           | 16 ----------------
 mm/page_alloc.c          |  4 ++++
 4 files changed, 25 insertions(+), 39 deletions(-)

-- 
2.14.0