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kernel / Documentation / block / capability.rst
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1=============================== 2Generic Block Device Capability 3=============================== 4 5This file documents the sysfs file block/<disk>/capability 6 7capability is a hex word indicating which capabilities a specific disk 8supports. For more information on bits not listed here, see 9include/linux/genhd.h 10 11GENHD_FL_MEDIA_CHANGE_NOTIFY 12---------------------------- 13 14Value: 4 15 16When this bit is set, the disk supports Asynchronous Notification 17of media change events. These events will be broadcast to user 18space via kernel uevent.