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From: ebiederm@xmission.com (Eric W. Biederman)
To: Davidlohr Bueso <dave@stgolabs.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Bernd Edlinger <bernd.edlinger@hotmail.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
	Jann Horn <jannh@google.com>,
	Vasiliy Kulikov <segoon@openwall.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Oleg Nesterov <oleg@redhat.com>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Sargun Dhillon <sargun@sargun.me>,
	Christian Brauner <christian.brauner@ubuntu.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Waiman Long <longman@redhat.com>
Subject: Re: [PATCH] perf: Break deadlock involving exec_update_mutex
Date: Thu, 10 Dec 2020 13:40:58 -0600	[thread overview]
Message-ID: <87r1nxmotx.fsf@x220.int.ebiederm.org> (raw)
In-Reply-To: <20201210183849.fdgcagdn4pyghtfn@linux-p48b> (Davidlohr Bueso's message of "Thu, 10 Dec 2020 10:38:49 -0800")

Davidlohr Bueso <dave@stgolabs.net> writes:

> On Tue, 08 Dec 2020, Peter Zijlstra wrote:
>
>>I suppose I'll queue the below into tip/perf/core for next merge window,
>>unless you want it in a hurry?
>
> I'm thinking we'd still want Eric's series on top of this for the reader
> benefits of the lock.

We will see shortly what happens when the various branches all make it
into linux-next.   The two changes don't conflict in principle so it
should not be a problem.

Eric


  reply	other threads:[~2020-12-10 20:14 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-03 20:09 [PATCH 0/3] exec: Transform exec_update_mutex into a rw_semaphore Eric W. Biederman
2020-12-03 20:10 ` [PATCH 1/3] rwsem: Implement down_read_killable_nested Eric W. Biederman
2020-12-04  1:58   ` Waiman Long
2020-12-09 18:38   ` [tip: locking/core] " tip-bot2 for Eric W. Biederman
2020-12-03 20:11 ` [PATCH 2/3] rwsem: Implement down_read_interruptible Eric W. Biederman
2020-12-04  1:59   ` Waiman Long
2020-12-07  9:02     ` Peter Zijlstra
2020-12-07 15:33       ` Waiman Long
2020-12-07 16:58         ` David Laight
2020-12-07 19:02           ` Waiman Long
2020-12-08  9:12             ` David Laight
2020-12-08 12:32               ` Peter Zijlstra
2020-12-08 13:13                 ` David Laight
2020-12-08 15:34               ` Waiman Long
2020-12-08 16:23                 ` David Laight
2020-12-07 15:56       ` Eric W. Biederman
2020-12-08 14:52         ` Peter Zijlstra
2020-12-08 18:27           ` Eric W. Biederman
2020-12-09 18:36             ` Peter Zijlstra
2020-12-10 19:33               ` Eric W. Biederman
2020-12-11  8:16                 ` Peter Zijlstra
2020-12-09 18:38       ` [tip: locking/core] locking/rwsem: Introduce rwsem_write_trylock() tip-bot2 for Peter Zijlstra
2020-12-09 18:38       ` [tip: locking/core] locking/rwsem: Fold __down_{read,write}*() tip-bot2 for Peter Zijlstra
2020-12-09 18:38       ` [tip: locking/core] locking/rwsem: Better collate rwsem_read_trylock() tip-bot2 for Peter Zijlstra
2020-12-09 18:38   ` [tip: locking/core] rwsem: Implement down_read_interruptible tip-bot2 for Eric W. Biederman
2020-12-03 20:12 ` [PATCH 3/3] exec: Transform exec_update_mutex into a rw_semaphore Eric W. Biederman
2020-12-04 16:08   ` Bernd Edlinger
2020-12-04 17:21     ` Linus Torvalds
2020-12-04 19:34       ` Eric W. Biederman
2020-12-04 20:10         ` Linus Torvalds
2020-12-04 20:30           ` Bernd Edlinger
2020-12-04 20:48             ` Linus Torvalds
2020-12-04 21:48               ` Davidlohr Bueso
2020-12-05 18:05                 ` Eric W. Biederman
2020-12-07  9:15                   ` Peter Zijlstra
2020-12-07  9:09               ` Peter Zijlstra
2020-12-07 18:40                 ` Linus Torvalds
2020-12-08  8:34                   ` [PATCH] perf: Break deadlock involving exec_update_mutex Peter Zijlstra
2020-12-08 18:37                     ` Linus Torvalds
2020-12-10 18:38                     ` Davidlohr Bueso
2020-12-10 19:40                       ` Eric W. Biederman [this message]
2020-12-05 17:43           ` [PATCH 3/3] exec: Transform exec_update_mutex into a rw_semaphore Eric W. Biederman
2020-12-04 17:39     ` Eric W. Biederman
2020-12-03 22:42 ` [PATCH 0/3] " Linus Torvalds
2020-12-04  1:56   ` Waiman Long
2020-12-04  4:54   ` Davidlohr Bueso

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