Introduce a set of macros that generate functions to handle page flags. A page flag function group typically starts with either SETPAGEFLAG(,) to create a set of page flag operations that are atomic. Or __SETPAGEFLAG(, --- include/linux/page-flags.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) Index: linux-2.6/include/linux/page-flags.h =================================================================== --- linux-2.6.orig/include/linux/page-flags.h 2008-02-29 19:14:30.000000000 -0800 +++ linux-2.6/include/linux/page-flags.h 2008-02-29 19:15:28.000000000 -0800 @@ -103,6 +103,47 @@ enum pageflags { }; /* + * Macros to create function definitions for page flags + */ +#define TESTPAGEFLAG(uname, lname) \ +static inline int Page##uname(struct page *page) \ + { return test_bit(PG_##lname, page); } + +#define SETPAGEFLAG(uname, lname) \ +static inline void SetPage##uname(struct page *page) \ + { set_bit(PG_##lname, page); } + +#define CLEARPAGEFLAG(uname, lname) \ +static inline void ClearPage##uname(struct page *page) \ + { clear_bit(PG_##lname, page); } + +#define __SETPAGEFLAG(uname, lname) \ +static inline void __SetPage##uname(struct page *page) \ + { __set_bit(PG_##lname, page); } + +#define __CLEARPAGEFLAG(uname, lname) \ +static inline void __ClearPage##uname(struct page *page) \ + { __clear_bit(PG_##lname, page); } + +#define TESTSETFLAG(uname, lname) \ +static inline int TestSetPage##uname(struct page *page) \ + { return test_and_set_bit(PG_##lname, &page->flags); } + +#define TESTCLEARFLAG(uname, lname) \ +static inline int TestClearPage##uname(struct page *page) \ + { return test_and_clear_bit(PG_##lname, &page->flags); } + + +#define PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname) \ + SETPAGEFLAG(uname, lname) CLEARPAGEFLAG(uname, lname) + +#define __PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname) \ + __SETPAGEFLAG(uname, lname) __CLEARPAGEFLAG(uname, lname) + +#define TESTSCFLAG(uname, lname) \ + TESTSETFLAG(uname, lname) TESTCLEARFLAG(uname, lname) + +/* * Manipulation of page state flags */ #define PageLocked(page) \ -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/