From: Jason Gunthorpe <jgg@nvidia.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: akpm@linux-foundation.org, Jan Kara <jack@suse.cz>,
"Darrick J. Wong" <djwong@kernel.org>,
Christoph Hellwig <hch@lst.de>,
John Hubbard <jhubbard@nvidia.com>,
Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, nvdimm@lists.linux.dev,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 02/13] fsdax: Use page_maybe_dma_pinned() for DAX vs DMA collisions
Date: Tue, 6 Sep 2022 09:07:28 -0300 [thread overview]
Message-ID: <Yxc4AMcFRJC/O0H3@nvidia.com> (raw)
In-Reply-To: <166225777193.2351842.16365701080007152185.stgit@dwillia2-xfh.jf.intel.com>
On Sat, Sep 03, 2022 at 07:16:12PM -0700, Dan Williams wrote:
> diff --git a/mm/gup.c b/mm/gup.c
> index 732825157430..499c46296fda 100644
> --- a/mm/gup.c
> +++ b/mm/gup.c
> @@ -177,8 +177,10 @@ static void gup_put_folio(struct folio *folio, int refs, unsigned int flags)
> refs *= GUP_PIN_COUNTING_BIAS;
> }
>
> - if (!put_devmap_managed_page_refs(&folio->page, refs))
> - folio_put_refs(folio, refs);
> + folio_put_refs(folio, refs);
Can this be made unconditional at this point in the series? Shouldn't
something have been changed on the get ref side?
Jason
next prev parent reply other threads:[~2022-09-06 12:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-04 2:16 [PATCH 00/13] Fix the DAX-gup mistake Dan Williams
2022-09-04 2:16 ` [PATCH 01/13] fsdax: Rename "busy page" to "pinned page" Dan Williams
2022-09-04 2:16 ` [PATCH 02/13] fsdax: Use page_maybe_dma_pinned() for DAX vs DMA collisions Dan Williams
2022-09-06 12:07 ` Jason Gunthorpe [this message]
2022-09-04 2:16 ` [PATCH 03/13] fsdax: Delete put_devmap_managed_page_refs() Dan Williams
2022-09-04 2:16 ` [PATCH 04/13] fsdax: Update dax_insert_entry() calling convention to return an error Dan Williams
2022-09-04 2:16 ` [PATCH 05/13] fsdax: Cleanup dax_associate_entry() Dan Williams
2022-09-04 2:16 ` [PATCH 06/13] fsdax: Rework dax_insert_entry() calling convention Dan Williams
2022-09-04 2:16 ` [PATCH 07/13] fsdax: Manage pgmap references at entry insertion and deletion Dan Williams
2022-09-06 12:30 ` Jason Gunthorpe
2022-09-04 2:16 ` [PATCH 08/13] devdax: Minor warning fixups Dan Williams
2022-09-04 2:16 ` [PATCH 09/13] devdax: Move address_space helpers to the DAX core Dan Williams
2022-09-04 2:16 ` [PATCH 10/13] dax: Prep dax_{associate, disassociate}_entry() for compound pages Dan Williams
2022-09-04 2:17 ` [PATCH 11/13] devdax: add PUD support to the DAX mapping infrastructure Dan Williams
2022-09-04 2:17 ` [PATCH 12/13] devdax: Use dax_insert_entry() + dax_delete_mapping_entry() Dan Williams
2022-09-04 2:17 ` [PATCH 13/13] mm/gup: Drop DAX pgmap accounting Dan Williams
2022-09-06 13:05 ` [PATCH 00/13] Fix the DAX-gup mistake Jason Gunthorpe
2022-09-06 17:23 ` Dan Williams
2022-09-06 17:29 ` Jason Gunthorpe
2022-09-06 18:37 ` Dan Williams
2022-09-06 18:49 ` Jason Gunthorpe
2022-09-06 19:41 ` Dan Williams
2022-09-07 0:54 ` Dan Williams
2022-09-07 12:58 ` Jason Gunthorpe
2022-09-07 17:10 ` Dan Williams
2022-09-07 18:43 ` Dan Williams
2022-09-07 19:30 ` Jason Gunthorpe
2022-09-07 20:45 ` Dan Williams
2022-09-08 18:49 ` Jason Gunthorpe
2022-09-08 19:27 ` Dan Williams
2022-09-09 11:53 ` Jason Gunthorpe
2022-09-09 17:52 ` Dan Williams
2022-09-09 18:11 ` Matthew Wilcox
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=Yxc4AMcFRJC/O0H3@nvidia.com \
--to=jgg@nvidia.com \
--cc=akpm@linux-foundation.org \
--cc=dan.j.williams@intel.com \
--cc=djwong@kernel.org \
--cc=hch@lst.de \
--cc=jack@suse.cz \
--cc=jhubbard@nvidia.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=nvdimm@lists.linux.dev \
--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).