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Groups > linux.kernel > #1709967 > unrolled thread

[v2 0/1] discard memblock data later

Started byPavel Tatashin <pasha.tatashin@oracle.com>
First post2017-08-11 23:10 +0200
Last post2017-08-11 23:10 +0200
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  [v2 0/1] discard memblock data later Pavel Tatashin <pasha.tatashin@oracle.com> - 2017-08-11 23:10 +0200

#1709967 — [v2 0/1] discard memblock data later

FromPavel Tatashin <pasha.tatashin@oracle.com>
Date2017-08-11 23:10 +0200
Subject[v2 0/1] discard memblock data later
Message-ID<udplU-8vf-11@gated-at.bofh.it>
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

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