On Thu, May 18, 2017 at 02:25:52PM +0000, Bart Van Assche wrote:

On Thu, 2017-05-18 at 15:18 +0200, Christoph Hellwig wrote:

quoted

We've cleaned up our headers sufficiently that we don't need this split
anymore.

Hello Christoph,

Request-based drivers need the structure definitions from <linux/blkdev.h> and
the type definitions from <linux/blk_types.h> but do not need the definition of
struct bio. Have you considered to remove #include <linux/bio.h> from file
include/linux/blkdev.h? Do you think that would help to reduce the kernel build
time?

Most block drivers end up needing bio.h anyway.  But I can skip this
part of the series for now.