Re: [PATCH 8/8] blk-map: reimplement blk_rq_map_user() using blk_rq_map_user_iov()

[Tejun Heo]

FUJITA Tomonori wrote:
> No, we are not talking about blk_rq_append_bio().
> 
> We are talking about the multiple bio handling in blk_rq_map_user,
> which is the feature that Mike added long time ago. The feature is
> surely necessary for some users. So you can't remote it.

How would someone use that without blk_rq_append_bio()?  The only
reason blk_rq_map_user() had multiple bio chaining was to work around
BIO_MAX_SIZE.  blk_rq_map_user_iov() doesn't support multiple bio
chaining, so sans blk_rq_append_bio() or playing with rq/bio internals
directly, there's no way to use or even know about multiple bios.

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/