avr32: drop _PAGE_FILE and pte_file()-related helpers

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/avr32/include/asm/pgtable.h b/arch/avr32/include/asm/pgtable.h
index 4beff97e2033f14efc1094b979a9f887a8525259..ac7a817e21267fa3461c7dbef8a91c34e3b9f584 100644 (file)
--- a/arch/avr32/include/asm/pgtable.h
+++ b/arch/avr32/include/asm/pgtable.h
@@ -86,9 +86,6 @@ extern struct page *empty_zero_page;
 #define _PAGE_BIT_PRESENT      10
 #define _PAGE_BIT_ACCESSED     11 /* software: page was accessed */
 
-/* The following flags are only valid when !PRESENT */
-#define _PAGE_BIT_FILE         0 /* software: pagecache or swap? */
-
 #define _PAGE_WT               (1 << _PAGE_BIT_WT)
 #define _PAGE_DIRTY            (1 << _PAGE_BIT_DIRTY)
 #define _PAGE_EXECUTE          (1 << _PAGE_BIT_EXECUTE)
@@ -101,7 +98,6 @@ extern struct page *empty_zero_page;
 /* Software flags */
 #define _PAGE_ACCESSED         (1 << _PAGE_BIT_ACCESSED)
 #define _PAGE_PRESENT          (1 << _PAGE_BIT_PRESENT)
-#define _PAGE_FILE             (1 << _PAGE_BIT_FILE)
 
 /*
  * Page types, i.e. sizes. _PAGE_TYPE_NONE corresponds to what is
@@ -210,14 +206,6 @@ static inline int pte_special(pte_t pte)
        return 0;
 }
 
-/*
- * The following only work if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
-       return pte_val(pte) & _PAGE_FILE;
-}
-
 /* Mutator functions for PTE bits */
 static inline pte_t pte_wrprotect(pte_t pte)
 {
@@ -329,7 +317,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma,
  * Encode and decode a swap entry
  *
  * Constraints:
- *   _PAGE_FILE at bit 0
  *   _PAGE_TYPE_* at bits 2-3 (for emulating _PAGE_PROTNONE)
  *   _PAGE_PRESENT at bit 10
  *
@@ -346,18 +333,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma,
 #define __pte_to_swp_entry(pte)        ((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)  ((pte_t) { (x).val })
 
-/*
- * Encode and decode a nonlinear file mapping entry. We have to
- * preserve _PAGE_FILE and _PAGE_PRESENT here. _PAGE_TYPE_* isn't
- * necessary, since _PAGE_FILE implies !_PAGE_PROTNONE (?)
- */
-#define PTE_FILE_MAX_BITS      30
-#define pte_to_pgoff(pte)      (((pte_val(pte) >> 1) & 0x1ff)          \
-                                | ((pte_val(pte) >> 11) << 9))
-#define pgoff_to_pte(off)      ((pte_t) { ((((off) & 0x1ff) << 1)      \
-                                           | (((off) >> 9) << 11)      \
-                                           | _PAGE_FILE) })
-
 typedef pte_t *pte_addr_t;
 
 #define kern_addr_valid(addr)  (1)