433 	if (!zram->backing_dev)  in reset_bdev()
439 	filp_close(zram->backing_dev, NULL);  in reset_bdev()
440 	zram->backing_dev = NULL;  in reset_bdev()
456 	file = zram->backing_dev;  in backing_dev_show()
482 	struct file *backing_dev = NULL;  in backing_dev_store()  local
508 	backing_dev = filp_open(file_name, O_RDWR|O_LARGEFILE, 0);  in backing_dev_store()
509 	if (IS_ERR(backing_dev)) {  in backing_dev_store()
510 		err = PTR_ERR(backing_dev);  in backing_dev_store()
511 		backing_dev = NULL;  in backing_dev_store()
515 	mapping = backing_dev->f_mapping;  in backing_dev_store()
543 	zram->backing_dev = backing_dev;  in backing_dev_store()
558 	if (backing_dev)  in backing_dev_store()
559 		filp_close(backing_dev, NULL);  in backing_dev_store()
674 	if (!zram->backing_dev) {  in writeback_store()
1858 static DEVICE_ATTR_RW(backing_dev);