mm: use is_cow_mapping() across tree where proper

[linux-2.6-microblaze.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b905143..7786267 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3734,15 +3734,13 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
        pte_t *src_pte, *dst_pte, entry, dst_entry;
        struct page *ptepage;
        unsigned long addr;
-       int cow;
+       bool cow = is_cow_mapping(vma->vm_flags);
        struct hstate *h = hstate_vma(vma);
        unsigned long sz = huge_page_size(h);
        struct address_space *mapping = vma->vm_file->f_mapping;
        struct mmu_notifier_range range;
        int ret = 0;
 
-       cow = (vma->vm_flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE;
-
        if (cow) {
                mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, src,
                                        vma->vm_start,