The patch titled
Subject: mm: vmscan: check if we isolated a compound page during lumpy scan
has been added to the -mm tree. Its filename is
mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan.patch
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------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: mm: vmscan: check if we isolated a compound page during lumpy scan
Properly take into account if we isolated a compound page during the lumpy
scan in reclaim and skip over the tail pages when encountered. This
corrects the values given to the tracepoint for number of lumpy pages
isolated and will avoid breaking the loop early if compound pages smaller
than the requested allocation size are requested.
[mgorman@xxxxxxx: Updated changelog]
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Andy Isaacson <adi@xxxxxxxxxxxxx>
Cc: Nai Xia <nai.xia@xxxxxxxxx>
Cc: Johannes Weiner <jweiner@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff -puN mm/vmscan.c~mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan mm/vmscan.c
--- a/mm/vmscan.c~mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan
+++ a/mm/vmscan.c
@@ -1171,13 +1171,16 @@ static unsigned long isolate_lru_pages(u
break;
if (__isolate_lru_page(cursor_page, mode, file) == 0) {
+ unsigned int isolated_pages;
list_move(&cursor_page->lru, dst);
mem_cgroup_del_lru(cursor_page);
- nr_taken += hpage_nr_pages(page);
- nr_lumpy_taken++;
+ isolated_pages = hpage_nr_pages(page);
+ nr_taken += isolated_pages;
+ nr_lumpy_taken += isolated_pages;
if (PageDirty(cursor_page))
- nr_lumpy_dirty++;
+ nr_lumpy_dirty += isolated_pages;
scan++;
+ pfn += isolated_pages-1;
} else {
/*
* Check if the page is freed already.
_
Subject: Subject: mm: vmscan: check if we isolated a compound page during lumpy scan
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
origin.patch
memcg-keep-root-group-unchanged-if-creation-fails.patch
mm-avoid-livelock-on-__gfp_fs-allocations-v2.patch
hugetlb-detect-race-upon-page-allocation-failure-during-cow.patch
hugetlb-clarify-hugetlb_instantiation_mutex-usage.patch
mm-more-intensive-memory-corruption-debug.patch
mm-more-intensive-memory-corruption-debug-fix.patch
pm-hibernate-do-not-count-debug-pages-as-savable.patch
slub-min-order-when-debug_guardpage_minorder-0.patch
mm-compaction-push-isolate-search-base-of-compact-control-one-pfn-ahead.patch
mremap-enforce-rmap-src-dst-vma-ordering-in-case-of-vma_merge-succeeding-in-copy_vma.patch
mremap-enforce-rmap-src-dst-vma-ordering-in-case-of-vma_merge-succeeding-in-copy_vma-update.patch
mm-do-not-stall-in-synchronous-compaction-for-thp-allocations.patch
revert-mm-do-not-stall-in-synchronous-compaction-for-thp-allocations.patch
mm-compaction-allow-compaction-to-isolate-dirty-pages.patch
mm-compaction-use-synchronous-compaction-for-proc-sys-vm-compact_memory.patch
mm-vmscan-check-if-we-isolated-a-compound-page-during-lumpy-scan.patch
mm-vmscan-do-not-oom-if-aborting-reclaim-to-start-compaction.patch
mm-compaction-determine-if-dirty-pages-can-be-migrated-without-blocking-within-migratepage.patch
mm-compaction-make-isolate_lru_page-filter-aware-again.patch
mm-page-allocator-do-not-call-direct-reclaim-for-thp-allocations-while-compaction-is-deferred.patch
mm-compaction-introduce-sync-light-migration-for-use-by-compaction.patch
mm-vmscan-when-reclaiming-for-compaction-ensure-there-are-sufficient-free-pages-available.patch
mm-vmscan-check-if-reclaim-should-really-abort-even-if-compaction_ready-is-true-for-one-zone.patch
mm-isolate-pages-for-immediate-reclaim-on-their-own-lru.patch
memcg-make-mem_cgroup_split_huge_fixup-more-efficient.patch
memcg-clean-up-soft_limit_tree-if-allocation-fails.patch
thp-improve-the-error-code-path.patch
thp-remove-unnecessary-tlb-flush-for-mprotect.patch
thp-add-tlb_remove_pmd_tlb_entry.patch
thp-improve-order-in-lru-list-for-split-huge-page.patch
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