mm/ksm: handle protnone saved writes when making page write protect

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Without this KSM will consider the page write protected, but a numa
fault can later mark the page writable.  This can result in memory
corruption.

Link: http://lkml.kernel.org/r/1487498625-10891-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Aneesh Kumar K.V 2017-02-24 14:59:19 -08:00 • committed by Linus Torvalds

parent 288bc54949

commit 595cd8f256

2 changed files with 15 additions and 2 deletions

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8

include/asm-generic/pgtable.h

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