[PATCH] freepgt: free_pgtables use vma list
[linux-2.6.git] / arch / ia64 / mm / hugetlbpage.c
index 40ad8328ffd5c9d97d7ac44679d066e1e9f27827..626258ae974290d354c5384b725ffac8647f55c2 100644 (file)
@@ -187,45 +187,12 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address, pmd_t *pmd, int wri
 }
 
 /*
- * Same as generic free_pgtables(), except constant PGDIR_* and pgd_offset
- * are hugetlb region specific.
+ * Do nothing, until we've worked out what to do!  To allow build, we
+ * must remove reference to clear_page_range since it no longer exists.
  */
 void hugetlb_free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *prev,
        unsigned long start, unsigned long end)
 {
-       unsigned long first = start & HUGETLB_PGDIR_MASK;
-       unsigned long last = end + HUGETLB_PGDIR_SIZE - 1;
-       struct mm_struct *mm = tlb->mm;
-
-       if (!prev) {
-               prev = mm->mmap;
-               if (!prev)
-                       goto no_mmaps;
-               if (prev->vm_end > start) {
-                       if (last > prev->vm_start)
-                               last = prev->vm_start;
-                       goto no_mmaps;
-               }
-       }
-       for (;;) {
-               struct vm_area_struct *next = prev->vm_next;
-
-               if (next) {
-                       if (next->vm_start < start) {
-                               prev = next;
-                               continue;
-                       }
-                       if (last > next->vm_start)
-                               last = next->vm_start;
-               }
-               if (prev->vm_end > first)
-                       first = prev->vm_end;
-               break;
-       }
-no_mmaps:
-       if (last < first)       /* for arches with discontiguous pgd indices */
-               return;
-       clear_page_range(tlb, first, last);
 }
 
 void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)