Merge branch 'linus' into perf/urgent

Merge reason: we need to fix a non-trivial merge conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index e90a673be67e..c88d2a9451af 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -6,6 +6,7 @@
 #define PAGE_FLAGS_H
 
 #include <linux/types.h>
+#include <linux/bug.h>
 #ifndef __GENERATING_BOUNDS_H
 #include <linux/mm_types.h>
 #include <generated/bounds.h>
@@ -414,11 +415,26 @@ static inline int PageTransHuge(struct page *page)
         return PageHead(page);
 }
 
+/*
+ * PageTransCompound returns true for both transparent huge pages
+ * and hugetlbfs pages, so it should only be called when it's known
+ * that hugetlbfs pages aren't involved.
+ */
 static inline int PageTransCompound(struct page *page)
 {
         return PageCompound(page);
 }
 
+/*
+ * PageTransTail returns true for both transparent huge pages
+ * and hugetlbfs pages, so it should only be called when it's known
+ * that hugetlbfs pages aren't involved.
+ */
+static inline int PageTransTail(struct page *page)
+{
+        return PageTail(page);
+}
+
 #else
 
 static inline int PageTransHuge(struct page *page)
@@ -430,6 +446,11 @@ static inline int PageTransCompound(struct page *page)
 {
         return 0;
 }
+
+static inline int PageTransTail(struct page *page)
+{
+        return 0;
+}
 #endif
 
 #ifdef CONFIG_MMU