The patch titled
Subject: mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix
has been added to the -mm tree. Its filename is
mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix
remove unwanted ppc change, per Aneesh
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/pgtable.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff -puN arch/powerpc/mm/pgtable.c~mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix arch/powerpc/mm/pgtable.c
--- a/arch/powerpc/mm/pgtable.c~mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix
+++ a/arch/powerpc/mm/pgtable.c
@@ -186,7 +186,12 @@ static pte_t set_access_flags_filter(pte
void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
pte_t pte)
{
- VM_WARN_ON(pte_present(*ptep));
+ /*
+ * When handling numa faults, we already have the pte marked
+ * _PAGE_PRESENT, but we can be sure that it is not in hpte.
+ * Hence we can use set_pte_at for them.
+ */
+ VM_WARN_ON(pte_present(*ptep) && !pte_protnone(*ptep));
/*
* Add the pte bit when tryint set a pte
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
scripts-spellingtxt-fix-incorrect-typo-words-fix.patch
ocfs2-old-mle-put-and-release-after-the-function-dlm_add_migration_mle-called-fix.patch
ocfs2-dlm-optimization-of-code-while-free-dead-node-locks-checkpatch-fixes.patch
mm.patch
slub-make-sysfs-directories-for-memcg-sub-caches-optional-fix.patch
mm-throttle-show_mem-from-warn_alloc-fix.patch
userfaultfd-hugetlbfs-fix-__mcopy_atomic_hugetlb-retry-error-processing-fix-fix.patch
lib-show_memc-teach-show_mem-to-work-with-the-given-nodemask-checkpatch-fixes.patch
mm-consolidate-gfp_nofail-checks-in-the-allocator-slowpath-fix.patch
mm-ksm-improve-deduplication-of-zero-pages-with-colouring-fix.patch
mm-track-active-portions-of-a-section-at-boot-fix.patch
mm-memory_hotplugc-unexport-__remove_pages.patch
z3fold-add-kref-refcounting-checkpatch-fixes.patch
mm-convert-remove_migration_pte-to-use-page_vma_mapped_walk-checkpatch-fixes.patch
mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix.patch
linux-kernelh-fix-div_round_closest-to-support-negative-divisors-fix.patch
linux-next-rejects.patch
linux-next-git-rejects.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
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