From: Matthew Wilcox <willy@infradead.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: lizhe.67@bytedance.com, peterz@infradead.org, mingo@redhat.com,
will@kernel.org, longman@redhat.com, boqun.feng@gmail.com,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [RFC 1/2] rwsem: introduce upgrade_read interface
Date: Wed, 16 Oct 2024 12:51:23 +0100 [thread overview]
Message-ID: <Zw-ou7gsqTMGQDdl@casper.infradead.org> (raw)
In-Reply-To: <Zw9Hk_9OO-Aqsshc@infradead.org>
On Tue, Oct 15, 2024 at 09:56:51PM -0700, Christoph Hellwig wrote:
> On Wed, Oct 16, 2024 at 12:35:59PM +0800, lizhe.67@bytedance.com wrote:
> > From: Li Zhe <lizhe.67@bytedance.com>
> >
> > Introduce a new rwsem interface upgrade_read(). We can call it
>
> It's obviously a try_upgrade_read, right?
Well, that's confusing. "try" usually means "don't sleep", and this
sleeps. Maybe it shouldn't sleep; ie we make this fail if there's any
other reader? It'll succeed less often, but it'll be easier to
understand.
next prev parent reply other threads:[~2024-10-16 11:51 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 4:35 [RFC 0/2] rwsem: introduce upgrade_read interface lizhe.67
2024-10-16 4:35 ` [RFC 1/2] " lizhe.67
2024-10-16 4:56 ` Christoph Hellwig
2024-10-16 7:33 ` lizhe.67
2024-10-16 7:36 ` Christoph Hellwig
2024-10-16 8:00 ` lizhe.67
2024-10-16 8:03 ` Christoph Hellwig
2024-10-16 8:13 ` lizhe.67
2024-10-16 11:51 ` Matthew Wilcox [this message]
2024-10-16 12:21 ` Christoph Hellwig
2024-10-16 11:49 ` Matthew Wilcox
2024-10-17 6:23 ` lizhe.67
2024-10-16 14:23 ` Waiman Long
2024-10-16 18:05 ` Matthew Wilcox
2024-10-16 18:39 ` Waiman Long
2024-10-17 6:46 ` lizhe.67
2024-10-17 15:05 ` Christoph Hellwig
2024-10-17 17:36 ` Waiman Long
2024-10-18 5:06 ` Christoph Hellwig
2024-10-19 22:59 ` kernel test robot
2024-10-16 4:36 ` [RFC 2/2] khugepaged: use upgrade_read() to optimize collapse_huge_page lizhe.67
2024-10-16 11:53 ` Matthew Wilcox
2024-10-17 6:18 ` lizhe.67
2024-10-17 13:20 ` Matthew Wilcox
2024-10-18 6:37 ` lizhe.67
2024-10-23 7:27 ` kernel test robot
2024-10-16 8:09 ` [RFC 0/2] rwsem: introduce upgrade_read interface Peter Zijlstra
2024-10-16 8:53 ` lizhe.67
2024-10-16 12:10 ` Peter Zijlstra
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=Zw-ou7gsqTMGQDdl@casper.infradead.org \
--to=willy@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=boqun.feng@gmail.com \
--cc=hch@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lizhe.67@bytedance.com \
--cc=longman@redhat.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=will@kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.