block: don't honor chunk sizes for data-less IO
authorJens Axboe <axboe@fb.com>
Fri, 29 May 2015 19:11:32 +0000 (13:11 -0600)
committerJens Axboe <axboe@fb.com>
Fri, 29 May 2015 19:11:32 +0000 (13:11 -0600)
We don't need to honor chunk sizes for IO that doesn't carry any
data.

Signed-off-by: Jens Axboe <axboe@fb.com>
include/linux/blkdev.h

Simple merge