device-dax: fix private mapping restriction, permit read-only

[mirror_ubuntu-zesty-kernel.git] / drivers / dax / dax.c

diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index 3d94ff20fdca2bd64beeb86674e42abe736117de..286447a83dab809e0522e461c7e6ca416e997462 100644 (file)
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -271,7 +271,7 @@ static int check_vma(struct dax_dev *dax_dev, struct vm_area_struct *vma,
                return -ENXIO;
 
        /* prevent private mappings from being established */
-       if ((vma->vm_flags & VM_SHARED) != VM_SHARED) {
+       if ((vma->vm_flags & VM_MAYSHARE) != VM_MAYSHARE) {
                dev_info(dev, "%s: %s: fail, attempted private mapping\n",
                                current->comm, func);
                return -EINVAL;