[PATCH] Pass vma argument to copy_user_highpage().

To allow a more effective copy_user_highpage() on certain architectures,
a vma argument is added to the function and cow_user_page() allowing
the implementation of these functions to check for the VM_EXEC bit.

The main part of this patch was originally written by Ralf Baechle;
Atushi Nemoto did the the debugging.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 089092d152ab..cb362f761f17 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -44,14 +44,14 @@ static void clear_huge_page(struct page *page, unsigned long addr)
 }
 
 static void copy_huge_page(struct page *dst, struct page *src,
-                           unsigned long addr)
+                           unsigned long addr, struct vm_area_struct *vma)
 {
         int i;
 
         might_sleep();
         for (i = 0; i < HPAGE_SIZE/PAGE_SIZE; i++) {
                 cond_resched();
-                copy_user_highpage(dst + i, src + i, addr + i*PAGE_SIZE);
+                copy_user_highpage(dst + i, src + i, addr + i*PAGE_SIZE, vma);
         }
 }
 
@@ -442,7 +442,7 @@ static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,
         }
 
         spin_unlock(&mm->page_table_lock);
-        copy_huge_page(new_page, old_page, address);
+        copy_huge_page(new_page, old_page, address, vma);
         spin_lock(&mm->page_table_lock);
 
         ptep = huge_pte_offset(mm, address & HPAGE_MASK);