Path from Andi Kleen Add x86_64 support for file offsets in pte's. include/asm-x86_64/pgtable.h | 7 +++++++ 1 files changed, 7 insertions(+) diff -puN include/asm-x86_64/pgtable.h~file-offset-in-pte-x86_64 include/asm-x86_64/pgtable.h --- 25/include/asm-x86_64/pgtable.h~file-offset-in-pte-x86_64 2003-03-09 19:39:22.000000000 -0800 +++ 25-akpm/include/asm-x86_64/pgtable.h 2003-03-09 19:39:22.000000000 -0800 @@ -151,6 +151,7 @@ static inline void set_pml4(pml4_t *dst, #define _PAGE_ACCESSED 0x020 #define _PAGE_DIRTY 0x040 #define _PAGE_PSE 0x080 /* 2MB page */ +#define _PAGE_FILE 0x040 /* pagecache or swap */ #define _PAGE_GLOBAL 0x100 /* Global TLB entry */ #define _PAGE_PROTNONE 0x080 /* If not present */ @@ -245,6 +246,7 @@ extern inline int pte_exec(pte_t pte) { extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; } extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } extern inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; } +static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } extern inline pte_t pte_rdprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; } extern inline pte_t pte_exprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; } @@ -330,6 +332,11 @@ static inline pgd_t *current_pgd_offset_ #define pmd_bad(x) ((pmd_val(x) & (~PTE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE ) #define pfn_pmd(nr,prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val(prot))) + +#define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT) +#define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE }) + + /* PTE - Level 1 access. */ /* page, protection -> pte */ _