[PATCH 25/36] autonuma: reset autonuma page data when pages are freed

[Andrea Arcangeli]

When pages are freed abort any pending migration. If knuma_migrated
arrives first it will notice because get_page_unless_zero would fail.

You can safely ignore the #ifdef because a later patch (page_autonuma)
clears it.

Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
 mm/page_alloc.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8c9cad5..49e2916 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -619,6 +619,10 @@ static inline int free_pages_check(struct page *page)
 		bad_page(page);
 		return 1;
 	}
+	autonuma_migrate_page_remove(page);
+#ifdef CONFIG_AUTONUMA
+	page->autonuma_last_nid = -1;
+#endif
 	if (page->flags & PAGE_FLAGS_CHECK_AT_PREP)
 		page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
 	return 0;
--
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