MM: Fix macro argument substitution in PageHead() and PageTail()

Fix macro argument substitution in PageHead() and PageTail() - 'page' should have brackets surrounding it (commit 6d77795). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
git-mirror · Feb 22, 2008 · a62f735 · a62f735
1 parent 5e45bb2
commit a62f735
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
@@ -266,7 +266,7 @@ static inline void SetPageUptodate(struct page *page)
 
 #define PG_head_tail_mask ((1L << PG_compound) | (1L << PG_reclaim))
 
-#define PageTail(page)	((page->flags & PG_head_tail_mask) \
+#define PageTail(page)	(((page)->flags & PG_head_tail_mask)	\
 				== PG_head_tail_mask)
 
 static inline void __SetPageTail(struct page *page)
@@ -279,7 +279,7 @@ static inline void __ClearPageTail(struct page *page)
 	page->flags &= ~PG_head_tail_mask;
 }
 
-#define PageHead(page)	((page->flags & PG_head_tail_mask) \
+#define PageHead(page)	(((page)->flags & PG_head_tail_mask)	\
 				== (1L << PG_compound))
 #define __SetPageHead(page)	__SetPageCompound(page)
 #define __ClearPageHead(page)	__ClearPageCompound(page)