dev_attr_ro      1209 block/genhd.c  	&dev_attr_ro.attr,
dev_attr_ro       200 block/partition-generic.c 	&dev_attr_ro.attr,
dev_attr_ro      2709 drivers/usb/gadget/function/f_mass_storage.c 	&dev_attr_ro.attr,
dev_attr_ro      2721 drivers/usb/gadget/function/f_mass_storage.c 	if (attr == &dev_attr_ro.attr)