tree 64f520a1a2d2e1a9c30b45e306ce6f901f8f8d49
parent a1b49cb7e2a7961ec3aa8b64860bf480d4ec9077
author NeilBrown <neilb@suse.de> 1303113142 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1303113142 +0200

block: Enhance new plugging support to support general callbacks

md/raid requires an unplug callback, but as it does not uses
requests the current code cannot provide one.

So allow arbitrary callbacks to be attached to the blk_plug.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>