linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / ia64 / mm / hugetlbpage.c

diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index eee5c1c..2d13889 100644 (file)
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -8,6 +8,7 @@
  * Feb, 2004: dynamic hugetlb page size via boot parameter
  */
 
+#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
@@ -67,10 +68,9 @@ huge_pte_offset (struct mm_struct *mm, unsigned long addr)
 #define mk_pte_huge(entry) { pte_val(entry) |= _PAGE_P; }
 
 /*
- * Don't actually need to do any preparation, but need to make sure
- * the address is in the right region.
+ * This function checks for proper alignment of input addr and len parameters.
  */
-int prepare_hugepage_range(unsigned long addr, unsigned long len)
+int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
 {
        if (len & ~HPAGE_MASK)
                return -EINVAL;
@@ -112,7 +112,8 @@ void hugetlb_free_pgd_range(struct mmu_gather **tlb,
                        unsigned long floor, unsigned long ceiling)
 {
        /*
-        * This is called to free hugetlb page tables.
+        * This is called only when is_hugepage_only_range(addr,),
+        * and it follows that is_hugepage_only_range(end,) also.
         *
         * The offset of these addresses from the base of the hugetlb
         * region must be scaled down by HPAGE_SIZE/PAGE_SIZE so that
@@ -124,9 +125,9 @@ void hugetlb_free_pgd_range(struct mmu_gather **tlb,
 
        addr = htlbpage_to_page(addr);
        end  = htlbpage_to_page(end);
-       if (REGION_NUMBER(floor) == RGN_HPAGE)
+       if (is_hugepage_only_range(tlb->mm, floor, HPAGE_SIZE))
                floor = htlbpage_to_page(floor);
-       if (REGION_NUMBER(ceiling) == RGN_HPAGE)
+       if (is_hugepage_only_range(tlb->mm, ceiling, HPAGE_SIZE))
                ceiling = htlbpage_to_page(ceiling);
 
        free_pgd_range(tlb, addr, end, floor, ceiling);