/* open and close keep track of how many times the CQ is mapped, to avoid releasing it.  */
static void ipath_vma_open(struct vm_area_struct *vma)
/* open and close keep track of how many times the CQ is mapped, to avoid releasing it.  */
static void ipath_vma_open(struct vm_area_struct *vma)
{
	struct ipath_mmap_info *ip = vma->vm_private_data;
	kref_get(&ip->ref);
}