tree 6a995fead6fa9638e02fc6e3928fe0a8612f073a
parent cf446f0dbafb5428a551da1c0df8f56316831df8
author Ed L. Cashin <ecashin@coraid.com> 1202473203 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202491351 -0800

aoe: user can ask driver to forget previously detected devices

When an AoE device is detected, the kernel is informed, and a new block device
is created.  If the device is unused, the block device corresponding to remote
device that is no longer available may be removed from the system by telling
the aoe driver to "flush" its list of devices.

Without this patch, software like GPFS and LVM may attempt to read from AoE
devices that were discovered earlier but are no longer present, blocking until
the I/O attempt times out.

Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>