[dm-devel] [PATCH 02/13] dm: kill dm_rq_bio_destructor

[Alasdair G Kergon]

On Fri, May 18, 2012 at 08:57:29AM -0700, Tejun Heo wrote:
> Please explain why this is done and how it's safe.  Alasdair / dm
> folks, can you please ack this?
 
I think it's relying on there being never more than one reference on those 
bios so that that endio fn, called exactly once, always frees it and there
are no dm_puts elsewhere.

Alasdair