Re: [PATCH 02/11] blk: make the bioset rescue_workqueue optional.

From: Jens Axboe
Date: Mon May 01 2017 - 10:02:30 EST

On 04/30/2017 11:00 PM, NeilBrown wrote:
> On Mon, Apr 24 2017, Christoph Hellwig wrote:
>> On Mon, Apr 24, 2017 at 11:51:01AM +1000, NeilBrown wrote:
>>> I was following the existing practice exemplified by
>>> bioset_create_nobvec().
>> Which is pretty ugly to start with..
> That is a matter of personal taste.
> As such, it is up to the maintainer to change it if they want it
> changed.
>>> By not changing the signature of the function, I can avoid touching
>>> quite a few places where it is called.
>> There are 13 callers of bioset_create and one caller of
>> bioset_create_nobvec, and your series touches many of those.
>> So just adding a flags argument to bioset_create and passing
>> BIOSET_NEED_BVECS and BIOSET_NEED_RESUER flags to it doesn't seem
>> to much of an effort, and it's going to create a much nicer and easier
>> to extend interface.
> If someone else submitted a patch to discard bioset_create_nobvec in
> favour of BIOSET_NEED_BVECS and got it accepted, then I would rebase my
> series on that. As it is, I'm basing my patches on the style currently
> present in the tree.
> Of course, if Jens says he'll only take my patches if I change to style
> to match your preference, I'll do that.

I generally tend to prefer tree wide cleanups to improve our APIs, even
if it does cause an extra bit of pain. Would you mind doing that as a
prep patch?

Jens Axboe