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86ce18d7b7
Allow user space to determine if a disk supports Asynchronous Notification of media changes. This is done by adding a new sysfs file "capability_flags", which is documented in (insert file name). This sysfs file will export all disk capabilities flags to user space. We also define a new flag to define the media change notification capability. Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 lines
618 B
Text
15 lines
618 B
Text
Generic Block Device Capability
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===============================================================================
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This file documents the sysfs file block/<disk>/capability
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capability is a hex word indicating which capabilities a specific disk
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supports. For more information on bits not listed here, see
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include/linux/genhd.h
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Capability Value
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-------------------------------------------------------------------------------
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GENHD_FL_MEDIA_CHANGE_NOTIFY 4
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When this bit is set, the disk supports Asynchronous Notification
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of media change events. These events will be broadcast to user
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space via kernel uevent.
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