linux-kernel - Re: [PATCH v3] lockdep: check that no locks held at freeze time

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Message-ID: <20130220223013.GA15760@redhat.com>
Date:	Wed, 20 Feb 2013 23:30:13 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Mandeep Singh Baines <msb@...omium.org>
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v3] lockdep: check that no locks held at freeze time

On 02/19, Mandeep Singh Baines wrote:
>
> We shouldn't try_to_freeze if locks are held. Verified that
> I get no lockdep warnings after applying this patch and
> "vfork: don't freezer_count() for in-kernel users of CLONE_VFORK".

I believe the patch is fine.

But I don't understand the changelog, unless I am totally confused
(and I have a lot of unread emails so perhaps I missed something),
this version do not need the changes in CLONE_VFORK.

And, Mandeep, I'll try to answer your emails asap...

Oleg.

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