diff options
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 11 | ||||
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 11 | ||||
| -rw-r--r-- | include/asm-generic/pgtable.h | 26 | ||||
| -rw-r--r-- | include/linux/mm.h | 8 | ||||
| -rw-r--r-- | mm/memory.c | 7 |
5 files changed, 28 insertions, 35 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index c02158be836..14490e9443a 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -76,16 +76,7 @@ extern unsigned long zero_page_mask; #define ZERO_PAGE(vaddr) \ (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))) - -#define is_zero_pfn is_zero_pfn -static inline int is_zero_pfn(unsigned long pfn) -{ - extern unsigned long zero_pfn; - unsigned long offset_from_zero_pfn = pfn - zero_pfn; - return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); -} - -#define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr)) +#define __HAVE_COLOR_ZERO_PAGE extern void paging_init(void); diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 2d3b7cb2600..c814e6f5b57 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -55,16 +55,7 @@ extern unsigned long zero_page_mask; #define ZERO_PAGE(vaddr) \ (virt_to_page((void *)(empty_zero_page + \ (((unsigned long)(vaddr)) &zero_page_mask)))) - -#define is_zero_pfn is_zero_pfn -static inline int is_zero_pfn(unsigned long pfn) -{ - extern unsigned long zero_pfn; - unsigned long offset_from_zero_pfn = pfn - zero_pfn; - return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); -} - -#define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr)) +#define __HAVE_COLOR_ZERO_PAGE #endif /* !__ASSEMBLY__ */ diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index b36ce40bd1c..284e80831d2 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -449,6 +449,32 @@ extern void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, unsigned long size); #endif +#ifdef __HAVE_COLOR_ZERO_PAGE +static inline int is_zero_pfn(unsigned long pfn) +{ + extern unsigned long zero_pfn; + unsigned long offset_from_zero_pfn = pfn - zero_pfn; + return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); +} + +static inline unsigned long my_zero_pfn(unsigned long addr) +{ + return page_to_pfn(ZERO_PAGE(addr)); +} +#else +static inline int is_zero_pfn(unsigned long pfn) +{ + extern unsigned long zero_pfn; + return pfn == zero_pfn; +} + +static inline unsigned long my_zero_pfn(unsigned long addr) +{ + extern unsigned long zero_pfn; + return zero_pfn; +} +#endif + #ifdef CONFIG_MMU #ifndef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/include/linux/mm.h b/include/linux/mm.h index 4b80bad4a36..4af4f0b1be4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -516,14 +516,6 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) } #endif -#ifndef my_zero_pfn -static inline unsigned long my_zero_pfn(unsigned long addr) -{ - extern unsigned long zero_pfn; - return zero_pfn; -} -#endif - /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of diff --git a/mm/memory.c b/mm/memory.c index f9a4b0cb862..3f680e7c764 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -717,13 +717,6 @@ static inline bool is_cow_mapping(vm_flags_t flags) return (flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE; } -#ifndef is_zero_pfn -static inline int is_zero_pfn(unsigned long pfn) -{ - return pfn == zero_pfn; -} -#endif - /* * vm_normal_page -- This function gets the "struct page" associated with a pte. * |