Re: [PATCH] iov_iter: optimise bvec iov_iter_advance()

From: Pavel Begunkov
Date: Wed Dec 09 2020 - 07:10:57 EST


On 09/12/2020 08:33, Christoph Hellwig wrote:
> On Thu, Dec 03, 2020 at 11:48:56AM +0000, Pavel Begunkov wrote:
>> It's inlined and the on-stack iter is completely optimised out. Frankly,
>> I'd rather not open-code bvec_iter_advance(), at least for this chunk to
>> be findable from bvec.h, e.g. grep bvec_iter and bvec_for_each. Though,
>> I don't like myself that preamble/postamble.
>
> Ok. I still think we at least want a separate helper instead of
> bloating the main iov_iter_advance.

I agree on that, just haven't got back to it yet.

--
Pavel Begunkov