#define __pgd_offset(address) pgd_index(address)
#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define __pmd_offset(address) pmd_index(address)
-#define page_pte(page) page_pte_prot(page, __pgprot(0))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, 0)
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
/*
- * Bits 0, 1, 2, 7 and 8 are taken, split up the 32 bits of offset
- * into this range:
+ * Bits 0, 4, 6, and 7 are taken. Let's leave bits 1, 2, 3, and 5 alone to
+ * make things easier, and only use the upper 56 bits for the page offset...
*/
-#define PTE_FILE_MAX_BITS 32
+#define PTE_FILE_MAX_BITS 56
-#define pte_to_pgoff(_pte) \
- ((((_pte).pte >> 3) & 0x1f ) + (((_pte).pte >> 9) << 6 ))
-
-#define pgoff_to_pte(off) \
- ((pte_t) { (((off) & 0x1f) << 3) + (((off) >> 6) << 9) + _PAGE_FILE })
+#define pte_to_pgoff(_pte) ((_pte).pte >> 8)
+#define pgoff_to_pte(off) ((pte_t) { ((off) << 8) | _PAGE_FILE })
#endif /* _ASM_PGTABLE_64_H */