From a62f735cbb1a0937ab6a9196dadf752694ef0b7f Mon Sep 17 00:00:00 2001 From: David Howells <dhowells@redhat.com> Date: Thu, 21 Feb 2008 16:12:45 +0000 Subject: [PATCH] MM: Fix macro argument substitution in PageHead() and PageTail() Fix macro argument substitution in PageHead() and PageTail() - 'page' should have brackets surrounding it (commit 6d7779538f765963ced45a3fa4bed7ba8d2c277d). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- include/linux/page-flags.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index bbad43fb818100..b5b30f1c1e59e8 100644 --- 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) -- GitLab