Re: [LSF/MM/BPF TOPIC] State Of The Page

From: Chuck Lever III <chuck.lever@oracle.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: "lsf-pc@lists.linux-foundation.org"
	<lsf-pc@lists.linux-foundation.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
	"bpf@vger.kernel.org" <bpf@vger.kernel.org>
Subject: Re: [LSF/MM/BPF TOPIC] State Of The Page
Date: Sat, 20 Jan 2024 14:11:02 +0000	[thread overview]
Message-ID: <B9605EFB-4AB5-43E2-8538-850B758F37B9@oracle.com> (raw)
In-Reply-To: <ZaqiPSj1wMrTMdHa@casper.infradead.org>

> On Jan 19, 2024, at 11:24 AM, Matthew Wilcox <willy@infradead.org> wrote:
> 
> It's probably worth doing another roundup of where we are on our journey
> to separating folios, slabs, pages, etc.  Something suitable for people
> who aren't MM experts, and don't care about the details of how page
> allocation works.  I can talk for hours about whatever people want to
> hear about but some ideas from me:
> 
> - Overview of how the conversion is going
> - Convenience functions for filesystem writers
> - What's next?
> - What's the difference between &folio->page and page_folio(folio, 0)?
> - What are we going to do about bio_vecs?

Thanks for suggesting bio_vecs, one of my current favorite topics.

I'm still interested in any work going on for a bio_vec-enabled
API to the kernel's IOMMU infrastructure, which I've heard Leon R.
is working on.

> - How does all of this work with kmap()?
> 
> I'm sure people would like to suggest other questions they have that
> aren't adequately answered already and might be of interest to a wider
> audience.
> 

--
Chuck Lever