Doug Ambrisko 9c8f0619db If the I/O offset and length is multiple of the media size then
directly pass the request otherwise use a buffer that is a
multiple of the media size.  This speeds up I/O quite a bit
when using large transfer sizes on 4Kn disks etc.

MFC after:	1 week
2016-05-27 19:23:15 +00:00
..
2016-03-11 23:45:51 +00:00