mm/vma: introduce VM_ACCESS_FLAGS

[linux-block.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index de07bbc0e21f63046c79509203bb00aac2c2a504..f609e9ec4a253f8516c6c2749bc7f7165679e556 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1224,7 +1224,7 @@ static int anon_vma_compatible(struct vm_area_struct *a, struct vm_area_struct *
        return a->vm_end == b->vm_start &&
                mpol_equal(vma_policy(a), vma_policy(b)) &&
                a->vm_file == b->vm_file &&
-               !((a->vm_flags ^ b->vm_flags) & ~(VM_READ|VM_WRITE|VM_EXEC|VM_SOFTDIRTY)) &&
+               !((a->vm_flags ^ b->vm_flags) & ~(VM_ACCESS_FLAGS | VM_SOFTDIRTY)) &&
                b->vm_pgoff == a->vm_pgoff + ((b->vm_start - a->vm_start) >> PAGE_SHIFT);
 }