From: Joao Martins <joao.m.martins@oracle.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-mm@kvack.org, Dan Williams <dan.j.williams@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Naoya Horiguchi <naoya.horiguchi@nec.com>,
Matthew Wilcox <willy@infradead.org>,
John Hubbard <jhubbard@nvidia.com>,
Jane Chu <jane.chu@oracle.com>,
Muchun Song <songmuchun@bytedance.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>, Christoph Hellwig <hch@lst.de>,
nvdimm@lists.linux.dev, linux-doc@vger.kernel.org
Subject: Re: [PATCH v5 0/8] mm, dax: Introduce compound pages in devmap
Date: Mon, 15 Nov 2021 12:00:09 +0100 [thread overview]
Message-ID: <9acd8dc6-cab5-de72-e79e-f99a36f3c8c2@oracle.com> (raw)
In-Reply-To: <20211112154013.GE876299@ziepe.ca>
On 11/12/21 16:40, Jason Gunthorpe wrote:
> On Fri, Nov 12, 2021 at 04:08:16PM +0100, Joao Martins wrote:
>
>> This series converts device-dax to use compound pages, and moves away from the
>> 'struct page per basepage on PMD/PUD' that is done today. Doing so, unlocks a
>> few noticeable improvements on unpin_user_pages() and makes device-dax+altmap case
>> 4x times faster in pinning (numbers below and in last patch).
>
> I like it - aside from performance this series is important to clean
> up the ZONE_DEVICE refcounting mess as it means that only fsdax will
> be installing tail pages as PMD entries.
>
Yes, indeed. I should have emphasized that more in the cover letter.
Will fix for v6 (if there's a new respin).
> Thanks,
> Jason
>
prev parent reply other threads:[~2021-11-15 11:00 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-12 15:08 [PATCH v5 0/8] mm, dax: Introduce compound pages in devmap Joao Martins
2021-11-12 15:08 ` [PATCH v5 1/8] memory-failure: fetch compound_head after pgmap_pfn_valid() Joao Martins
2021-11-12 15:08 ` [PATCH v5 2/8] mm/page_alloc: split prep_compound_page into head and tail subparts Joao Martins
2021-11-12 15:08 ` [PATCH v5 3/8] mm/page_alloc: refactor memmap_init_zone_device() page init Joao Martins
2021-11-12 15:08 ` [PATCH v5 4/8] mm/memremap: add ZONE_DEVICE support for compound pages Joao Martins
2021-11-12 15:08 ` [PATCH v5 5/8] device-dax: use ALIGN() for determining pgoff Joao Martins
2021-11-12 15:08 ` [PATCH v5 6/8] device-dax: use struct_size() Joao Martins
2021-11-17 9:37 ` Christoph Hellwig
2021-11-17 10:15 ` Joao Martins
2021-11-12 15:08 ` [PATCH v5 7/8] device-dax: ensure dev_dax->pgmap is valid for dynamic devices Joao Martins
2021-11-17 9:37 ` Christoph Hellwig
2021-11-17 10:15 ` Joao Martins
2021-11-12 15:08 ` [PATCH v5 8/8] device-dax: compound devmap support Joao Martins
2021-11-12 15:34 ` Jason Gunthorpe
2021-11-15 12:11 ` Joao Martins
2021-11-15 16:49 ` Jason Gunthorpe
2021-11-16 16:38 ` Joao Martins
2021-11-19 16:12 ` Joao Martins
2021-11-19 16:55 ` Jason Gunthorpe
2021-11-19 19:26 ` Joao Martins
2021-11-19 19:53 ` Jason Gunthorpe
2021-11-19 20:13 ` Joao Martins
2021-11-17 9:43 ` Christoph Hellwig
2021-11-17 10:22 ` Joao Martins
2021-11-12 15:40 ` [PATCH v5 0/8] mm, dax: Introduce compound pages in devmap Jason Gunthorpe
2021-11-15 11:00 ` Joao Martins [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9acd8dc6-cab5-de72-e79e-f99a36f3c8c2@oracle.com \
--to=joao.m.martins@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=dan.j.williams@intel.com \
--cc=dave.jiang@intel.com \
--cc=hch@lst.de \
--cc=jane.chu@oracle.com \
--cc=jgg@ziepe.ca \
--cc=jhubbard@nvidia.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mike.kravetz@oracle.com \
--cc=naoya.horiguchi@nec.com \
--cc=nvdimm@lists.linux.dev \
--cc=songmuchun@bytedance.com \
--cc=vishal.l.verma@intel.com \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).