diff options
| author | Christoph Lameter <clameter@sgi.com> | 2008-04-28 02:12:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:22 -0700 |
| commit | ec7cade8c1a3d1ace69b35cc843b181818578dce (patch) | |
| tree | 32ab77ff6b58cb55834e729fa020eb91ef9940f0 /include | |
| parent | 602c4d112f9abf43af4b882b4a6f5505ed5c51b7 (diff) | |
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 <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page-flags.h | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 17deafa9eb9..d16efa9066d 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) |