Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux

[linux-2.6-omap-h63xx.git] / arch / x86 / mm / gup.c

diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 3085f25b4355de827fee53d8851180a844777517..be54176e9eb2ee3fa374d6bdc55ed917a4ea4106 100644 (file)
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -82,7 +82,7 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
                pte_t pte = gup_get_pte(ptep);
                struct page *page;
 
-               if ((pte_val(pte) & (mask | _PAGE_SPECIAL)) != mask) {
+               if ((pte_flags(pte) & (mask | _PAGE_SPECIAL)) != mask) {
                        pte_unmap(ptep);
                        return 0;
                }
@@ -116,10 +116,10 @@ static noinline int gup_huge_pmd(pmd_t pmd, unsigned long addr,
        mask = _PAGE_PRESENT|_PAGE_USER;
        if (write)
                mask |= _PAGE_RW;
-       if ((pte_val(pte) & mask) != mask)
+       if ((pte_flags(pte) & mask) != mask)
                return 0;
        /* hugepages are never "special" */
-       VM_BUG_ON(pte_val(pte) & _PAGE_SPECIAL);
+       VM_BUG_ON(pte_flags(pte) & _PAGE_SPECIAL);
        VM_BUG_ON(!pfn_valid(pte_pfn(pte)));
 
        refs = 0;
@@ -173,10 +173,10 @@ static noinline int gup_huge_pud(pud_t pud, unsigned long addr,
        mask = _PAGE_PRESENT|_PAGE_USER;
        if (write)
                mask |= _PAGE_RW;
-       if ((pte_val(pte) & mask) != mask)
+       if ((pte_flags(pte) & mask) != mask)
                return 0;
        /* hugepages are never "special" */
-       VM_BUG_ON(pte_val(pte) & _PAGE_SPECIAL);
+       VM_BUG_ON(pte_flags(pte) & _PAGE_SPECIAL);
        VM_BUG_ON(!pfn_valid(pte_pfn(pte)));
 
        refs = 0;
@@ -223,14 +223,17 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
                        struct page **pages)
 {
        struct mm_struct *mm = current->mm;
-       unsigned long end = start + (nr_pages << PAGE_SHIFT);
-       unsigned long addr = start;
+       unsigned long addr, len, end;
        unsigned long next;
        pgd_t *pgdp;
        int nr = 0;
 
+       start &= PAGE_MASK;
+       addr = start;
+       len = (unsigned long) nr_pages << PAGE_SHIFT;
+       end = start + len;
        if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
-                                       start, nr_pages*PAGE_SIZE)))
+                                       (void __user *)start, len)))
                goto slow_irqon;
 
        /*