tree 48f1e9b8576892cab65361e39b874e0e07d3b32a
parent 188112722cce083c8f1a7d0d84f55c2cd885920c
author Jens Axboe <jaxboe@fusionio.com> 1302596251 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1302596251 +0200

block: add callback function for unplug notification

MD would like to know when a queue is unplugged, so it can flush
it's bitmap writes. Add such a callback.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>