mm: numa: bugfix for LAST_CPUPID_NOT_IN_PAGE_FLAGS

[deliverable/linux.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index a1fe25110f50316481eab7633a3a01ecef0ebe95..c1b7414c7bef7c0a2128edd30438e48974af40f3 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -767,7 +767,7 @@ static inline bool __cpupid_match_pid(pid_t task_pid, int cpupid)
 #ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
 static inline int page_cpupid_xchg_last(struct page *page, int cpupid)
 {
-       return xchg(&page->_last_cpupid, cpupid);
+       return xchg(&page->_last_cpupid, cpupid & LAST_CPUPID_MASK);
 }
 
 static inline int page_cpupid_last(struct page *page)
@@ -776,7 +776,7 @@ static inline int page_cpupid_last(struct page *page)
 }
 static inline void page_cpupid_reset_last(struct page *page)
 {
-       page->_last_cpupid = -1;
+       page->_last_cpupid = -1 & LAST_CPUPID_MASK;
 }
 #else
 static inline int page_cpupid_last(struct page *page)