https://github.com/torvalds/linux
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Tip revision: 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 authored by Linus Torvalds on 16 October 2017, 01:01:12 UTC
Linux 4.14-rc5
Tip revision: 33d930e
capability.txt
Generic Block Device Capability
===============================================================================
This file documents the sysfs file block/<disk>/capability

capability is a hex word indicating which capabilities a specific disk
supports.  For more information on bits not listed here, see
include/linux/genhd.h

Capability				Value
-------------------------------------------------------------------------------
GENHD_FL_MEDIA_CHANGE_NOTIFY		4
	When this bit is set, the disk supports Asynchronous Notification
	of media change events.  These events will be broadcast to user
	space via kernel uevent.

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