Aneesh Kumar K.V 52c50ca75c powerpc/mm: handle protnone ptes on fork ... We need to mark pages of parent process read only on fork. Numa fault pte needs a protnone ptes variant with saved write flag set. On fork we need to make sure we remove the saved write bit. Instead of adding the protnone check in the caller update ptep_set_wrprotect variants to clear savedwrite bit. Without this we see random segfaults in application on fork. Fixes: c137a2757b ("powerpc/mm/autonuma: switch ppc64 to its own implementation of saved write") Link: http://lkml.kernel.org/r/1488203787-17849-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Rik van Riel <riel@surriel.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-03-09 17:01:09 -08:00
..
32	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next	2016-12-16 15:05:38 +11:00
64	powerpc/mm: handle protnone ptes on fork	2017-03-09 17:01:09 -08:00
pgalloc.h	powerpc/mm/radix: Flush page walk cache when freeing page table	2016-06-10 16:14:52 +10:00
pgtable.h	powerpc/mm: Move PTE bits from generic functions to hash64 functions.	2015-12-14 15:19:08 +11:00