diff options
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index d1fe1a761047..e1f5fcd79792 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -171,13 +171,12 @@ 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(const struct page *page) \ - { return 0; } - #define TESTSCFLAG(uname, lname) \ TESTSETFLAG(uname, lname) TESTCLEARFLAG(uname, lname) +#define TESTPAGEFLAG_FALSE(uname) \ +static inline int Page##uname(const struct page *page) { return 0; } + #define SETPAGEFLAG_NOOP(uname) \ static inline void SetPage##uname(struct page *page) { } @@ -187,17 +186,27 @@ static inline void ClearPage##uname(struct page *page) { } #define __CLEARPAGEFLAG_NOOP(uname) \ static inline void __ClearPage##uname(struct page *page) { } +#define TESTSETFLAG_FALSE(uname) \ +static inline int TestSetPage##uname(struct page *page) { return 0; } + #define TESTCLEARFLAG_FALSE(uname) \ static inline int TestClearPage##uname(struct page *page) { return 0; } #define __TESTCLEARFLAG_FALSE(uname) \ static inline int __TestClearPage##uname(struct page *page) { return 0; } +#define PAGEFLAG_FALSE(uname) TESTPAGEFLAG_FALSE(uname) \ + SETPAGEFLAG_NOOP(uname) CLEARPAGEFLAG_NOOP(uname) + +#define TESTSCFLAG_FALSE(uname) \ + TESTSETFLAG_FALSE(uname) TESTCLEARFLAG_FALSE(uname) + struct page; /* forward declaration */ TESTPAGEFLAG(Locked, locked) PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error) PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced) + __SETPAGEFLAG(Referenced, referenced) PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty) PAGEFLAG(LRU, lru) __CLEARPAGEFLAG(LRU, lru) PAGEFLAG(Active, active) __CLEARPAGEFLAG(Active, active) @@ -208,6 +217,7 @@ PAGEFLAG(Pinned, pinned) TESTSCFLAG(Pinned, pinned) /* Xen */ PAGEFLAG(SavePinned, savepinned); /* Xen */ PAGEFLAG(Reserved, reserved) __CLEARPAGEFLAG(Reserved, reserved) PAGEFLAG(SwapBacked, swapbacked) __CLEARPAGEFLAG(SwapBacked, swapbacked) + __SETPAGEFLAG(SwapBacked, swapbacked) __PAGEFLAG(SlobFree, slob_free) @@ -246,7 +256,6 @@ PAGEFLAG_FALSE(HighMem) PAGEFLAG(SwapCache, swapcache) #else PAGEFLAG_FALSE(SwapCache) - SETPAGEFLAG_NOOP(SwapCache) CLEARPAGEFLAG_NOOP(SwapCache) #endif PAGEFLAG(Unevictable, unevictable) __CLEARPAGEFLAG(Unevictable, unevictable) @@ -256,8 +265,8 @@ PAGEFLAG(Unevictable, unevictable) __CLEARPAGEFLAG(Unevictable, unevictable) PAGEFLAG(Mlocked, mlocked) __CLEARPAGEFLAG(Mlocked, mlocked) TESTSCFLAG(Mlocked, mlocked) __TESTCLEARFLAG(Mlocked, mlocked) #else -PAGEFLAG_FALSE(Mlocked) SETPAGEFLAG_NOOP(Mlocked) - TESTCLEARFLAG_FALSE(Mlocked) __TESTCLEARFLAG_FALSE(Mlocked) +PAGEFLAG_FALSE(Mlocked) __CLEARPAGEFLAG_NOOP(Mlocked) + TESTSCFLAG_FALSE(Mlocked) __TESTCLEARFLAG_FALSE(Mlocked) #endif #ifdef CONFIG_ARCH_USES_PG_UNCACHED @@ -317,13 +326,23 @@ CLEARPAGEFLAG(Uptodate, uptodate) extern void cancel_dirty_page(struct page *page, unsigned int account_size); int test_clear_page_writeback(struct page *page); -int test_set_page_writeback(struct page *page); +int __test_set_page_writeback(struct page *page, bool keep_write); + +#define test_set_page_writeback(page) \ + __test_set_page_writeback(page, false) +#define test_set_page_writeback_keepwrite(page) \ + __test_set_page_writeback(page, true) static inline void set_page_writeback(struct page *page) { test_set_page_writeback(page); } +static inline void set_page_writeback_keepwrite(struct page *page) +{ + test_set_page_writeback_keepwrite(page); +} + #ifdef CONFIG_PAGEFLAGS_EXTENDED /* * System with lots of page flags available. This allows separate @@ -348,6 +367,9 @@ static inline void ClearPageCompound(struct page *page) ClearPageHead(page); } #endif + +#define PG_head_mask ((1L << PG_head)) + #else /* * Reduce page flag use as much as possible by overlapping |