Extern or forward variable declaration at include/linux/configfs.h, line 49 References: drivers/acpi/acpi_configfs.c, line 235 drivers/block/null_blk.c, line 529 drivers/hwtracing/stm/policy.c, line 234 drivers/hwtracing/stm/policy.c, line 310 drivers/hwtracing/stm/policy.c, line 379 drivers/iio/industrialio-sw-device.c, line 154 drivers/iio/industrialio-sw-trigger.c, line 154 drivers/infiniband/core/cma_configfs.c, line 322 drivers/net/netconsole.c, line 680 drivers/nvme/target/configfs.c, line 463 drivers/nvme/target/configfs.c, line 766 drivers/nvme/target/configfs.c, line 851 drivers/nvme/target/configfs.c, line 920 drivers/nvme/target/configfs.c, line 962 drivers/pci/endpoint/pci-ep-cfs.c, line 430 drivers/target/target_core_configfs.c, line 293 drivers/target/target_core_configfs.c, line 2433 drivers/target/target_core_configfs.c, line 2871 drivers/target/target_core_configfs.c, line 2912 drivers/target/target_core_configfs.c, line 3030 drivers/target/target_core_configfs.c, line 3191 drivers/target/target_core_fabric_configfs.c, line 255 drivers/target/target_core_fabric_configfs.c, line 358 drivers/target/target_core_fabric_configfs.c, line 442 drivers/target/target_core_fabric_configfs.c, line 508 drivers/target/target_core_fabric_configfs.c, line 735 drivers/target/target_core_fabric_configfs.c, line 796 drivers/target/target_core_fabric_configfs.c, line 909 drivers/target/target_core_fabric_configfs.c, line 971 drivers/usb/gadget/configfs.c, line 592 drivers/usb/gadget/configfs.c, line 693 drivers/usb/gadget/configfs.c, line 1081 drivers/usb/gadget/configfs.c, line 1475 drivers/usb/gadget/function/f_mass_storage.c, line 3330 drivers/usb/gadget/function/uvc_configfs.c, line 165 drivers/usb/gadget/function/uvc_configfs.c, line 896 drivers/usb/gadget/function/uvc_configfs.c, line 1230 drivers/usb/gadget/function/uvc_configfs.c, line 1464 drivers/usb/gadget/function/uvc_configfs.c, line 1487 drivers/usb/gadget/function/uvc_configfs.c, line 1658 fs/dlm/config.c, line 249 fs/dlm/config.c, line 258 fs/dlm/config.c, line 267 fs/dlm/config.c, line 276 fs/ocfs2/cluster/heartbeat.c, line 2308 fs/ocfs2/cluster/nodemanager.c, line 654 fs/ocfs2/cluster/nodemanager.c, line 757 include/linux/configfs.h, line 49 include/linux/configfs.h, line 84 include/linux/configfs.h, line 232 samples/configfs/configfs_sample.c, line 260 samples/configfs/configfs_sample.c, line 330