402 	if (!zram->backing_dev)  in reset_bdev()
410 	filp_close(zram->backing_dev, NULL);  in reset_bdev()
411 	zram->backing_dev = NULL;  in reset_bdev()
428 	file = zram->backing_dev;  in backing_dev_show()
454 	struct file *backing_dev = NULL;  in backing_dev_store()  local
480 	backing_dev = filp_open(file_name, O_RDWR|O_LARGEFILE, 0);  in backing_dev_store()
481 	if (IS_ERR(backing_dev)) {  in backing_dev_store()
482 		err = PTR_ERR(backing_dev);  in backing_dev_store()
483 		backing_dev = NULL;  in backing_dev_store()
487 	mapping = backing_dev->f_mapping;  in backing_dev_store()
521 	zram->backing_dev = backing_dev;  in backing_dev_store()
548 	if (backing_dev)  in backing_dev_store()
549 		filp_close(backing_dev, NULL);  in backing_dev_store()
652 	if (!zram->backing_dev) {  in writeback_store()
1843 static DEVICE_ATTR_RW(backing_dev);