Messages in this thread Patch in this message | | | Date | Wed, 9 Jan 2013 12:04:47 +0000 | From | Mel Gorman <> | Subject | [PATCH] mm: migrate: Check page_count of THP before migrating accounting fix |
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As pointed out by Hugh Dickins, "mm: migrate: Check page_count of THP before migrating" can leave nr_isolated_anon elevated, correct it. This is a fix to mm-migrate-check-page_count-of-thp-before-migrating.patch
Signed-off-by: Mel Gorman <mgorman@suse.de> --- mm/migrate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/mm/migrate.c b/mm/migrate.c index f466827..c387786 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1689,8 +1689,11 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm, if (!isolated || page_count(page) != 2) { count_vm_events(PGMIGRATE_FAIL, HPAGE_PMD_NR); put_page(new_page); - if (isolated) + if (isolated) { putback_lru_page(page); + isolated = 0; + goto out; + } goto out_keep_locked; }
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