From: "Christoph Lameter (Ampere)" <cl@gentwo.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>,
"Darrick J. Wong" <djwong@kernel.org>,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
hannes@cmpxchg.org, clm@meta.com, linux-kernel@vger.kernel.org,
willy@infradead.org, kirill@shutemov.name, bfoster@redhat.com
Subject: Re: [PATCHSET v6 0/12] Uncached buffered IO
Date: Thu, 12 Dec 2024 08:59:11 -0800 (PST) [thread overview]
Message-ID: <2f79ff03-48ee-54bf-b928-e9519b3edfc7@gentwo.org> (raw)
In-Reply-To: <04e11417-cf68-4014-a7f7-e51392352e9d@kernel.dk>
On Thu, 12 Dec 2024, Jens Axboe wrote:
> On 12/10/24 4:11 AM, Christoph Hellwig wrote:
> > On Tue, Dec 03, 2024 at 09:52:41PM -0800, Darrick J. Wong wrote:
> >> <shrug> RWF_DONTCACHE, to match {I,DCACHE}_DONTCACHE ? ;)
> >>
> >> They sound pretty similar ("load this so I can do something with it,
> >> evict it immediately if possible") though I wouldn't rely on people
> >> outside the kernel being familiar with the existing dontcaches.
> >
> > FYI, another word for dontcache. uncached just has too many conotations
> > in the kernel context.
>
> Sure, we can go with DONTCACHE instead. Only thing I don't like about
> that is that you can use uncached as a verb and adjective, eg talking
> about uncached IO. Talking about dontcached IO sounds pretty weird.
>
> As I've said previously in this and other threads, I don't feel too
> strongly about the in-kernel naming, I care more about the exposed
> name. And uncached does seem to be the most descriptive and most
> easily understandable by users.
The page is cached while the operation is ongoing. "Transitory" would be
more accurate and it is a new term that was not used with pages before.
next prev parent reply other threads:[~2024-12-12 16:59 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-03 15:31 Jens Axboe
2024-12-03 15:31 ` [PATCH 01/12] mm/filemap: change filemap_create_folio() to take a struct kiocb Jens Axboe
2024-12-10 11:13 ` Christoph Hellwig
2024-12-12 15:49 ` Jens Axboe
2024-12-03 15:31 ` [PATCH 02/12] mm/readahead: add folio allocation helper Jens Axboe
2024-12-03 15:31 ` [PATCH 03/12] mm: add PG_uncached page flag Jens Axboe
2024-12-03 15:31 ` [PATCH 04/12] mm/readahead: add readahead_control->uncached member Jens Axboe
2024-12-03 15:31 ` [PATCH 05/12] mm/filemap: use page_cache_sync_ra() to kick off read-ahead Jens Axboe
2024-12-10 11:15 ` Christoph Hellwig
2024-12-03 15:31 ` [PATCH 06/12] mm/truncate: add folio_unmap_invalidate() helper Jens Axboe
2024-12-10 11:21 ` Christoph Hellwig
2024-12-12 20:19 ` Jens Axboe
2024-12-03 15:31 ` [PATCH 07/12] fs: add RWF_UNCACHED iocb and FOP_UNCACHED file_operations flag Jens Axboe
2024-12-06 17:35 ` Darrick J. Wong
2024-12-10 11:22 ` Christoph Hellwig
2024-12-12 19:42 ` Jens Axboe
2024-12-03 15:31 ` [PATCH 08/12] mm/filemap: add read support for RWF_UNCACHED Jens Axboe
2024-12-03 15:31 ` [PATCH 09/12] mm/filemap: drop uncached pages when writeback completes Jens Axboe
2024-12-03 15:31 ` [PATCH 10/12] mm/filemap: add filemap_fdatawrite_range_kick() helper Jens Axboe
2024-12-03 15:31 ` [PATCH 11/12] mm/filemap: make buffered writes work with RWF_UNCACHED Jens Axboe
2024-12-06 17:17 ` Darrick J. Wong
2024-12-06 18:22 ` Jens Axboe
2024-12-10 11:31 ` Christoph Hellwig
2024-12-12 15:51 ` Jens Axboe
2024-12-03 15:31 ` [PATCH 12/12] mm: add FGP_UNCACHED folio creation flag Jens Axboe
2024-12-03 18:23 ` [PATCHSET v6 0/12] Uncached buffered IO Christoph Lameter (Ampere)
2024-12-03 21:06 ` Jens Axboe
2024-12-03 22:16 ` Christoph Lameter (Ampere)
2024-12-03 22:41 ` Jens Axboe
2024-12-04 5:52 ` Darrick J. Wong
2024-12-04 16:36 ` Jens Axboe
2024-12-10 11:11 ` Christoph Hellwig
2024-12-12 15:48 ` Jens Axboe
2024-12-12 16:59 ` Christoph Lameter (Ampere) [this message]
2024-12-12 19:14 ` Jens Axboe
2024-12-12 19:35 ` Matthew Wilcox
2024-12-12 19:36 ` Jens Axboe
2024-12-12 20:06 ` Christoph Lameter (Ampere)
2024-12-13 5:04 ` Johannes Weiner
2024-12-13 14:49 ` Jens Axboe
2024-12-06 17:37 ` Darrick J. Wong
2024-12-10 9:48 ` Bharata B Rao
2024-12-12 15:46 ` Jens Axboe
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=2f79ff03-48ee-54bf-b928-e9519b3edfc7@gentwo.org \
--to=cl@gentwo.org \
--cc=axboe@kernel.dk \
--cc=bfoster@redhat.com \
--cc=clm@meta.com \
--cc=djwong@kernel.org \
--cc=hannes@cmpxchg.org \
--cc=hch@infradead.org \
--cc=kirill@shutemov.name \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--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