linux-kernel - Re: [PATCH 2/5] mm/hmm: Clean up some coding style and comments

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Date:   Thu, 6 Jun 2019 15:54:35 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Jerome Glisse <jglisse@...hat.com>
Cc:     rcampbell@...dia.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, John Hubbard <jhubbard@...dia.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Balbir Singh <bsingharora@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 2/5] mm/hmm: Clean up some coding style and comments

On Thu, Jun 06, 2019 at 11:52:13AM -0400, Jerome Glisse wrote:
> On Thu, Jun 06, 2019 at 12:41:29PM -0300, Jason Gunthorpe wrote:
> > On Thu, Jun 06, 2019 at 10:27:43AM -0400, Jerome Glisse wrote:
> > > On Thu, Jun 06, 2019 at 11:16:44AM -0300, Jason Gunthorpe wrote:
> > > > On Mon, May 06, 2019 at 04:29:39PM -0700, rcampbell@...dia.com wrote:
> > > > > From: Ralph Campbell <rcampbell@...dia.com>
> > > > > 
> > > > > There are no functional changes, just some coding style clean ups and
> > > > > minor comment changes.
> > > > > 
> > > > > Signed-off-by: Ralph Campbell <rcampbell@...dia.com>
> > > > > Reviewed-by: Jérôme Glisse <jglisse@...hat.com>
> > > > > Cc: John Hubbard <jhubbard@...dia.com>
> > > > > Cc: Ira Weiny <ira.weiny@...el.com>
> > > > > Cc: Dan Williams <dan.j.williams@...el.com>
> > > > > Cc: Arnd Bergmann <arnd@...db.de>
> > > > > Cc: Balbir Singh <bsingharora@...il.com>
> > > > > Cc: Dan Carpenter <dan.carpenter@...cle.com>
> > > > > Cc: Matthew Wilcox <willy@...radead.org>
> > > > > Cc: Souptick Joarder <jrdr.linux@...il.com>
> > > > > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > > > >  include/linux/hmm.h | 71 +++++++++++++++++++++++----------------------
> > > > >  mm/hmm.c            | 51 ++++++++++++++++----------------
> > > > >  2 files changed, 62 insertions(+), 60 deletions(-)
> > > > 
> > > > Applied to hmm.git, thanks
> > > 
> > > Can you hold off, i was already collecting patches and we will
> > > be stepping on each other toe ... for instance i had
> > 
> > I'd really rather not, I have a lot of work to do for this cycle and
> > this part needs to start to move forward now. I can't do everything
> > last minute, sorry.
> > 
> > The patches I picked up all look very safe to move ahead.
> 
> I want to post all the patch you need to apply soon, it is really
> painful because they are lot of different branches

I've already handled everything in your hmm-5.3, so I don't think
there is anything for you to do in that regard. Please double check
though!

If you have new patches please post them against something sensible
(and put them in a git branch) and I can usually sort out 'git am'
conflicts pretty quickly.

> If you hold of i will be posting all the patches in one big set so
> that you can apply all of them in one go and it will be a _lot_
> easier for me that way.

You don't need to repost my patches, I can do that myself, but thanks
for all the help getting them ready! Please respond to my v2 with more
review's/ack's/changes/etc so the series can move toward being
applied.

> On process thing it would be easier if we ask Dave/Daniel to merge
> hmm within drm this cycle. 

Yes, I expect we will do this - probably also to the AMD tree judging
on things in -next. This is the entire point of running a shared tree.

> Merging with Linus will break drm drivers and it seems easier to me
> to fix all this within the drm tree.

This is the normal process with a shared tree, we merge the tree
*everywhere it is required* so all trees can run concurrently.

I will *also* send it to Linus early so that Linus reviews the hmm
patches in the HMM pull request, not in the DRM or RDMA pull
request. This is best-practice when working across trees like this.

Please just keep me up to date when things conflicting arise and we
will work out the best solution.

Reminder, I still need patches from you for:
 - Fix all the kconfig stuff for randconfig failures/etc
 - Enable ARM64
 - Remove deprecated APIs from hmm.h

Please send them ASAP so it can be tested.

There shouldn't be any patches held back for 5.4 - send them all now.

Thanks,
Jason