From: Andrew Morton <akpm@linux-foundation.org>
To: Oleg Nesterov <oleg@tv-sign.ru>
Cc: ebiederm@xmission.com, mingo@elte.hu, paulmck@linux.vnet.ibm.com,
xemul@openvz.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fix tasklist + find_pid() with CONFIG_PREEMPT_RCU
Date: Tue, 29 Jan 2008 15:02:09 -0800 [thread overview]
Message-ID: <20080129150209.663538cb.akpm@linux-foundation.org> (raw)
In-Reply-To: <20080129164019.GA2060@tv-sign.ru>
On Tue, 29 Jan 2008 19:40:19 +0300
Oleg Nesterov <oleg@tv-sign.ru> wrote:
> With CONFIG_PREEMPT_RCU read_lock(tasklist_lock) doesn't imply rcu_read_lock(),
I'm suspecting that we have other code which assumes that read_lock, write_lock
and spin_lock imply rcu_read_lock().
I wonder if there are any sane runtime checks we can put in there to find
such problems.
next prev parent reply other threads:[~2008-01-29 23:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-29 16:40 [PATCH] fix tasklist + find_pid() with CONFIG_PREEMPT_RCU Oleg Nesterov
2008-01-29 23:02 ` Andrew Morton [this message]
2008-01-30 14:17 ` Peter Zijlstra
2008-01-31 13:32 ` Ingo Molnar
2008-01-29 23:08 ` Andrew Morton
2008-01-30 2:16 ` Eric W. Biederman
2008-01-30 4:56 ` Paul E. McKenney
2008-01-30 3:24 ` Eric W. Biederman
2008-01-30 5:00 ` Paul E. McKenney
2008-01-30 9:20 ` Eric W. Biederman
2008-01-30 9:48 ` Oleg Nesterov
2008-01-30 9:30 ` Oleg Nesterov
2008-01-30 18:28 ` Eric W. Biederman
2008-01-31 9:31 ` Oleg Nesterov
-- strict thread matches above, loose matches on Subject: below --
2009-12-14 2:15 Tetsuo Handa
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