[dm-devel] [PATCH 06/13] block: Add bio_reset()

[Tejun Heo]

Hello,

On Thu, May 17, 2012 at 10:59:53PM -0400, koverstreet at google.com wrote:
> From: Kent Overstreet <koverstreet at google.com>
> 
> Reusing bios is something that's been highly frowned upon in the past,
> but driver code keeps doing it anyways. If it's going to happen anyways,
> we should provide a generic method.
> 
> This'll help with getting rid of bi_destructor.

It would be nice to explain a bit why this helps bi_destructor
removal.

> +#define BIO_RESET_OFFSET	offsetof(struct bio, bi_max_vecs)

Maybe better named BIO_RESET_BYTES?  As offset tends to indicate the
start of a region.

Thanks.

-- 
tejun