mm: remove ptep_establish()

The last user of ptep_establish in mm/ is long gone.  Remove the architecture
primitive as well.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 19 insertions, 24 deletions

diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index 26215a976127..1039bf6b657f 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -707,16 +707,19 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
         pte_val(*ptep) = _PAGE_TYPE_EMPTY;
 }
 
-static inline pte_t
-ptep_clear_flush(struct vm_area_struct *vma,
-                 unsigned long address, pte_t *ptep)
+static inline void ptep_invalidate(unsigned long address, pte_t *ptep)
 {
-        pte_t pte = *ptep;
-        pte_t *shadow_pte = get_shadow_pte(ptep);
-
         __ptep_ipte(address, ptep);
-        if (shadow_pte)
-                __ptep_ipte(address, shadow_pte);
+        ptep = get_shadow_pte(ptep);
+        if (ptep)
+                __ptep_ipte(address, ptep);
+}
+
+static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
+                                     unsigned long address, pte_t *ptep)
+{
+        pte_t pte = *ptep;
+        ptep_invalidate(address, ptep);
         return pte;
 }
 
@@ -726,21 +729,14 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
         set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
 }
 
-static inline void
-ptep_establish(struct vm_area_struct *vma, 
-               unsigned long address, pte_t *ptep,
-               pte_t entry)
-{
-        ptep_clear_flush(vma, address, ptep);
-        set_pte(ptep, entry);
-}
-
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-({                                                                        \
-        int __changed = !pte_same(*(__ptep), __entry);                    \
-        if (__changed)                                                    \
-                ptep_establish(__vma, __address, __ptep, __entry);        \
-        __changed;                                                        \
+#define ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty)  \
+({                                                                      \
+        int __changed = !pte_same(*(__ptep), __entry);                  \
+        if (__changed) {                                                \
+                ptep_invalidate(__addr, __ptep);                        \
+                set_pte_at((__vma)->vm_mm, __addr, __ptep, __entry);    \
+        }                                                               \
+        __changed;                                                      \
 })
 
 /*
@@ -940,7 +936,6 @@ extern int remove_shared_memory(unsigned long start, unsigned long size);
 #define __HAVE_ARCH_MEMMAP_INIT
 extern void memmap_init(unsigned long, int, unsigned long, unsigned long);
 
-#define __HAVE_ARCH_PTEP_ESTABLISH
 #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH