[PATCH 14/24] mm, page_alloc: Simplify last cpupid reset

[Mel Gorman]

The current reset unnecessarily clears flags and makes pointless calculations.

Signed-off-by: Mel Gorman <mgor...@techsingularity.net>
---
 include/linux/mm.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index ffcff53e3b2b..60656db00abd 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -837,10 +837,7 @@ extern int page_cpupid_xchg_last(struct page *page, int 
cpupid);
 
 static inline void page_cpupid_reset_last(struct page *page)
 {
-       int cpupid = (1 << LAST_CPUPID_SHIFT) - 1;
-
-       page->flags &= ~(LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT);
-       page->flags |= (cpupid & LAST_CPUPID_MASK) << LAST_CPUPID_PGSHIFT;
+       page->flags |= LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT;
 }
 #endif /* LAST_CPUPID_NOT_IN_PAGE_FLAGS */
 #else /* !CONFIG_NUMA_BALANCING */
-- 
2.6.4