BUG_ON(pte_file(__swp_entry_to_pte(arch_entry)));
return __swp_entry_to_pte(arch_entry);
}
-
-#ifdef CONFIG_MIGRATION
-static inline swp_entry_t make_migration_entry(struct page *page, int write)
-{
- BUG_ON(!PageLocked(page));
- return swp_entry(write ? SWP_MIGRATION_WRITE : SWP_MIGRATION_READ,
- page_to_pfn(page));
-}
-
-static inline int is_migration_entry(swp_entry_t entry)
-{
- return unlikely(swp_type(entry) == SWP_MIGRATION_READ ||
- swp_type(entry) == SWP_MIGRATION_WRITE);
-}
-
-static inline int is_write_migration_entry(swp_entry_t entry)
-{
- return unlikely(swp_type(entry) == SWP_MIGRATION_WRITE);
-}
-
-static inline struct page *migration_entry_to_page(swp_entry_t entry)
-{
- struct page *p = pfn_to_page(swp_offset(entry));
- /*
- * Any use of migration entries may only occur while the
- * corresponding page is locked
- */
- BUG_ON(!PageLocked(p));
- return p;
-}
-
-static inline void make_migration_entry_read(swp_entry_t *entry)
-{
- *entry = swp_entry(SWP_MIGRATION_READ, swp_offset(*entry));
-}
-
-extern void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd,
- unsigned long address);
-#else
-
-#define make_migration_entry(page, write) swp_entry(0, 0)
-#define is_migration_entry(swp) 0
-#define migration_entry_to_page(swp) NULL
-static inline void make_migration_entry_read(swp_entry_t *entryp) { }
-static inline void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd,
- unsigned long address) { }
-static inline int is_write_migration_entry(swp_entry_t entry)
-{
- return 0;
-}
-
-#endif
-