The patch titled
Subject: mm: numa: mark huge PTEs young when clearing NUMA hinting faults
has been added to the -mm tree. Its filename is
mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults.patch
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From: Mel Gorman <mgorman@xxxxxxx>
Subject: mm: numa: mark huge PTEs young when clearing NUMA hinting faults
Base PTEs are marked young when the NUMA hinting information is cleared
but the same does not happen for huge pages which this patch addresses.
Note that migrated pages are not marked young as the base page migration
code does not assume that migrated pages have been referenced. This could
be addressed but beyond the scope of this series which is aimed at Dave
Chinners shrink workload that is unlikely to be affected by this issue.
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Aneesh Kumar <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/huge_memory.c~mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults mm/huge_memory.c
--- a/mm/huge_memory.c~mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults
+++ a/mm/huge_memory.c
@@ -1359,6 +1359,7 @@ int do_huge_pmd_numa_page(struct mm_stru
clear_pmdnuma:
BUG_ON(!PageLocked(page));
pmd = pmd_modify(pmd, vma->vm_page_prot);
+ pmd = pmd_mkyoung(pmd);
set_pmd_at(mm, haddr, pmdp, pmd);
update_mmu_cache_pmd(vma, addr, pmdp);
unlock_page(page);
_
Patches currently in -mm which might be from mgorman@xxxxxxx are
mm-thp-return-the-correct-value-for-change_huge_pmd.patch
mm-numa-do-not-clear-ptes-or-pmds-for-numa-hinting-faults.patch
mm-numa-mark-huge-ptes-young-when-clearing-numa-hinting-faults.patch
cxgb4-drop-__gfp_nofail-allocation.patch
jbd2-revert-must-not-fail-allocation-loops-back-to-gfp_nofail.patch
mm-cma-change-fallback-behaviour-for-cma-freepage.patch
mm-page_alloc-factor-out-fallback-freepage-checking.patch
mm-compaction-enhance-compaction-finish-condition.patch
mm-compaction-enhance-compaction-finish-condition-fix.patch
mm-refactor-do_wp_page-extract-the-reuse-case.patch
mm-refactor-do_wp_page-rewrite-the-unlock-flow.patch
mm-refactor-do_wp_page-extract-the-page-copy-flow.patch
mm-refactor-do_wp_page-handling-of-shared-vma-into-a-function.patch
mm-remove-gfp_thisnode.patch
mm-thp-really-limit-transparent-hugepage-allocation-to-local-node.patch
kernel-cpuset-remove-exception-for-__gfp_thisnode.patch
mm-clarify-__gfp_nofail-deprecation-status.patch
sparc-clarify-__gfp_nofail-allocation.patch
mm-numa-remove-migrate_ratelimited.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated.patch
linux-next.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
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