--- mm/shmem.c

+++ mm/shmem.c

@@ -2680,6 +2680,7 @@ void shmem_set_file(struct vm_area_struc

fput(vma->vm_file);

vma->vm_file = file;

vma->vm_ops = &shmem_vm_ops;

+ vma->vm_flags |= VM_CAN_NONLINEAR;

}

/**