282 	return zram->backing_dev;  in zram_wb_enabled()
297 	filp_close(zram->backing_dev, NULL);  in reset_bdev()
298 	zram->backing_dev = NULL;  in reset_bdev()
311 	struct file *file = zram->backing_dev;  in backing_dev_show()
341 	struct file *backing_dev = NULL;  in backing_dev_store()  local
367 	backing_dev = filp_open(file_name, O_RDWR|O_LARGEFILE, 0);  in backing_dev_store()
368 	if (IS_ERR(backing_dev)) {  in backing_dev_store()
369 		err = PTR_ERR(backing_dev);  in backing_dev_store()
370 		backing_dev = NULL;  in backing_dev_store()
374 	mapping = backing_dev->f_mapping;  in backing_dev_store()
406 	zram->backing_dev = backing_dev;  in backing_dev_store()
434 	if (backing_dev)  in backing_dev_store()
435 		filp_close(backing_dev, NULL);  in backing_dev_store()
1614 static DEVICE_ATTR_RW(backing_dev);