struct mapped_device *dm_get_md(dev_t dev) { struct mapped_device *md = dm_find_md(dev); if (md) dm_get(md); return md; }
void *dm_get_mdptr(dev_t dev) { struct mapped_device *md; void *mdptr = NULL; md = dm_find_md(dev); if (md) mdptr = md->interface_ptr; return mdptr; }