OpenCloudOS-Kernel/Documentation/block/capability.rst

19 lines
536 B
ReStructuredText
Raw Permalink Normal View History

===============================
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
GENHD_FL_MEDIA_CHANGE_NOTIFY
----------------------------
Value: 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.