From: William Lee Irwin III <wli@holomorphy.com>

Minor aio correction split off from suparna's patches:

Use the dedicated aio workqueue, not keventd, in order to isolate the rest
of the system from aio's demands.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>