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Date: Wed, 5 Jun 2024 01:23:34 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Mina Almasry <almasrymina@google.com>
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Subject: Re: [PATCH net-next v10 02/14] net: page_pool: create hooks for
 custom page providers
Message-ID: <ZmAghrRrj_KGgSQR@infradead.org>
References: <20240530201616.1316526-1-almasrymina@google.com>
 <20240530201616.1316526-3-almasrymina@google.com>
 <ZlqzER_ufrhlB28v@infradead.org>
 <CAHS8izMU_nMEr04J9kXiX6rJqK4nQKA+W-enKLhNxvK7=H2pgA@mail.gmail.com>
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On Mon, Jun 03, 2024 at 07:17:05AM -0700, Mina Almasry wrote:
> On Fri, May 31, 2024 at 10:35 PM Christoph Hellwig <hch@infradead.org> wrote:
> >
> > On Thu, May 30, 2024 at 08:16:01PM +0000, Mina Almasry wrote:
> > > I'm unsure if the discussion has been resolved yet. Sending the series
> > > anyway to get reviews/feedback on the (unrelated) rest of the series.
> >
> > As far as I'm concerned it is not.  I've not seen any convincing
> > argument for more than page/folio allocator including larger order /
> > huge page and dmabuf.
> >
> 
> Thanks Christoph, this particular patch series adds dmabuf, so I
> assume no objection there. I assume the objection is that you want the
> generic, extensible hooks removed.

Exactly!  Note that this isn't a review of the dmabuf bits as there
are people more qualified with me.

> To be honest, I don't think the hooks are an integral part of the
> design, and at this point I think we've argued for them enough. I
> think we can easily achieve the same thing with just raw if statements
> in a couple of places. We can always add the hooks if and only if we
> actually justify many memory providers.
> 
> Any objections to me removing the hooks and directing to memory
> allocations via simple if statements? Something like (very rough
> draft, doesn't compile):

I like this approach, thanks! 

You might still want to keep the static key, though.