diff options
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6081493..9a63bd6 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -131,6 +131,54 @@ enum pageflags { #ifndef __GENERATING_BOUNDS_H +#ifdef CONFIG_DMA_CMA +struct page; +extern struct page *migrate_pages_current; + +/* + * Macros to create function definitions for page flags + */ +#define TESTPAGEFLAG(uname, lname) \ +static inline int Page##uname(struct page *page) \ + { do { } while (0); return test_bit(PG_##lname, &page->flags); } + +#define SETPAGEFLAG(uname, lname) \ +static inline void SetPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + set_bit(PG_##lname, &page->flags); } + +#define CLEARPAGEFLAG(uname, lname) \ +static inline void ClearPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + clear_bit(PG_##lname, &page->flags); } + +#define __SETPAGEFLAG(uname, lname) \ +static inline void __SetPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + __set_bit(PG_##lname, &page->flags); } + +#define __CLEARPAGEFLAG(uname, lname) \ +static inline void __ClearPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + __clear_bit(PG_##lname, &page->flags); } + +#define TESTSETFLAG(uname, lname) \ +static inline int TestSetPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + return test_and_set_bit(PG_##lname, &page->flags); } + +#define TESTCLEARFLAG(uname, lname) \ +static inline int TestClearPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + return test_and_clear_bit(PG_##lname, &page->flags); } + +#define __TESTCLEARFLAG(uname, lname) \ +static inline int __TestClearPage##uname(struct page *page) \ + { WARN_ON(0 && page == migrate_pages_current); \ + return __test_and_clear_bit(PG_##lname, &page->flags); } + +#else + /* * Macros to create function definitions for page flags */ @@ -166,6 +214,8 @@ static inline int TestClearPage##uname(struct page *page) \ static inline int __TestClearPage##uname(struct page *page) \ { return __test_and_clear_bit(PG_##lname, &page->flags); } +#endif + #define PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname) \ SETPAGEFLAG(uname, lname) CLEARPAGEFLAG(uname, lname) |