Subject: + mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2.patch added to -mm tree
To: vbabka@xxxxxxx,aarcange@xxxxxxxxxx,hughd@xxxxxxxxxx,mgorman@xxxxxxx,riel@xxxxxxxxxx,sasha.levin@xxxxxxxxxx,walken@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 18 Dec 2013 13:20:12 -0800
The patch titled
Subject: mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2
has been added to the -mm tree. Its filename is
mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Michel Lespinasse <walken@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mlock.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN mm/mlock.c~mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2 mm/mlock.c
--- a/mm/mlock.c~mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2
+++ a/mm/mlock.c
@@ -133,7 +133,10 @@ static void __munlock_isolation_failed(s
/**
* munlock_vma_page - munlock a vma page
- * @page - page to be unlocked
+ * @page - page to be unlocked, either a normal page or THP page head
+ *
+ * returns the size of the page as a page mask (0 for normal page,
+ * HPAGE_PMD_NR - 1 for THP head page)
*
* called from munlock()/munmap() path with page supposedly on the LRU.
* When we munlock a page, because the vma where we found the page is being
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
mm-mempolicy-correct-putback-method-for-isolate-pages-if-failed.patch
mm-compaction-respect-ignore_skip_hint-in-update_pageblock_skip.patch
mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered.patch
mm-munlock-fix-a-bug-where-thp-tail-page-is-encountered-v2.patch
mm-munlock-fix-deadlock-in-__munlock_pagevec.patch
mm-munlock-fix-deadlock-in-__munlock_pagevec-fix.patch
mm-mmapc-add-mlock_future_check-helper.patch
mm-mlock-prepare-params-outside-critical-region.patch
mm-compaction-trace-compaction-begin-and-end.patch
mm-compaction-encapsulate-defer-reset-logic.patch
mm-compaction-reset-cached-scanner-pfns-before-reading-them.patch
mm-compaction-detect-when-scanners-meet-in-isolate_freepages.patch
mm-compaction-do-not-mark-unmovable-pageblocks-as-skipped-in-async-compaction.patch
mm-compaction-reset-scanner-positions-immediately-when-they-meet.patch
mm-migrate-add-comment-about-permanent-failure-path.patch
mm-migrate-correct-failure-handling-if-hugepage_migration_support.patch
mm-migrate-remove-putback_lru_pages-fix-comment-on-putback_movable_pages.patch
mm-migrate-remove-unused-function-fail_migrate_page.patch
mm-documentation-remove-hopelessly-out-of-date-locking-doc.patch
mm-munlock-fix-potential-race-with-thp-page-split.patch
mm-munlock-fix-potential-race-with-thp-page-split-fix.patch
linux-next.patch
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