From ec7cade8c1a3d1ace69b35cc843b181818578dce Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 28 Apr 2008 02:12:53 -0700 Subject: [PATCH] page flags: add PAGEFLAGS_FALSE for flags that are always false Turns out that there are a number of times that a flag is simply always returning 0. Define a macro for that. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 17deafa9eb9b..d16efa9066d9 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -134,6 +134,10 @@ static inline int TestClearPage##uname(struct page *page) \ #define __PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname) \ __SETPAGEFLAG(uname, lname) __CLEARPAGEFLAG(uname, lname) +#define PAGEFLAG_FALSE(uname) \ +static inline int Page##uname(struct page *page) \ + { return 0; } + #define TESTSCFLAG(uname, lname) \ TESTSETFLAG(uname, lname) TESTCLEARFLAG(uname, lname) @@ -171,28 +175,19 @@ PAGEFLAG(Readahead, reclaim) /* Reminder to do async read-ahead */ */ #define PageHighMem(__p) is_highmem(page_zone(__p)) #else -static inline int PageHighMem(struct page *page) -{ - return 0; -} +PAGEFLAG_FALSE(HighMem) #endif #ifdef CONFIG_SWAP PAGEFLAG(SwapCache, swapcache) #else -static inline int PageSwapCache(struct page *page) -{ - return 0; -} +PAGEFLAG_FALSE(SwapCache) #endif #ifdef CONFIG_IA64_UNCACHED_ALLOCATOR PAGEFLAG(Uncached, uncached) #else -static inline int PageUncached(struct page *) -{ - return 0; -} +PAGEFLAG_FALSE(Uncached) #endif static inline int PageUptodate(struct page *page) -- 2.30.2