From: Johannes Berg <johannes@sipsolutions.net>
To: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org
Subject: Re: [PATCH 0/2] workqueue lockdep limitations/bugs
Date: Tue, 21 Aug 2018 19:15:55 +0200 [thread overview]
Message-ID: <1534871755.25523.32.camel@sipsolutions.net> (raw)
In-Reply-To: <20180821160039.GO3978217@devbig004.ftw2.facebook.com> (sfid-20180821_180043_407003_1DE29E4C)
Hi Tejun,
> > Let's say we again have an ordered workqueue, and the following:
> >
> > work1_function
> > {
> > mutex_lock(&mutex);
> > }
>
> Regular mutexes complain when the locker isn't the unlocker already.
> Do we really care about this case?
Oh, sorry for the confusion. I was just eliding the - not very
interesting for this case - unlock. Really I should've typed up a
lock/unlock pair in all of the examples.
johannes
prev parent reply other threads:[~2018-08-21 20:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-21 12:03 [PATCH 0/2] workqueue lockdep limitations/bugs Johannes Berg
2018-08-21 12:03 ` [PATCH 1/2] workqueue: skip lockdep wq dependency in cancel_work_sync() Johannes Berg
2018-08-21 16:08 ` Tejun Heo
2018-08-21 17:18 ` Johannes Berg
2018-08-21 17:27 ` Tejun Heo
2018-08-21 17:30 ` Johannes Berg
2018-08-21 17:55 ` Tejun Heo
2018-08-21 19:20 ` Johannes Berg
2018-08-22 2:45 ` Byungchul Park
2018-08-22 4:02 ` Johannes Berg
2018-08-22 5:47 ` Byungchul Park
2018-08-22 7:07 ` Johannes Berg
2018-08-22 7:50 ` Byungchul Park
2018-08-22 8:02 ` Johannes Berg
2018-08-22 9:15 ` Byungchul Park
2018-08-22 9:42 ` Johannes Berg
2018-08-22 12:47 ` Byungchul Park
2018-08-21 12:03 ` [PATCH 2/2] workqueue: create lockdep dependency in flush_work() Johannes Berg
2018-08-21 16:09 ` Tejun Heo
2018-08-21 17:19 ` Johannes Berg
2018-08-21 16:00 ` [PATCH 0/2] workqueue lockdep limitations/bugs Tejun Heo
2018-08-21 17:15 ` Johannes Berg [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=1534871755.25523.32.camel@sipsolutions.net \
--to=johannes@sipsolutions.net \
--cc=jiangshanlai@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=tj@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 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).