linux-kernel - Re: [RFC PATCH] freezer: revert 27920651fe "PM / Freezer: Make fake_signal_wake_up() wake TASK

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Message-ID: <20111101194601.GB9444@redhat.com>
Date:	Tue, 1 Nov 2011 20:46:01 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jeff Layton <jlayton@...hat.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Steve French <sfrench@...ba.org>, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-cifs@...r.kernel.org,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Neil Brown <neilb@...e.de>, trond.myklebust@...app.com,
	linux-nfs@...r.kernel.org
Subject: Re: [RFC PATCH] freezer: revert 27920651fe "PM / Freezer: Make
	fake_signal_wake_up() wake TASK_KILLABLE tasks too"

On 11/01, Oleg Nesterov wrote:
>
> Or we can add TASK_FREEZABLE (like TASK_WAKEKILL), iirc we already
> discussed this some time ago. And probably it makes sense to add the
> generic wait_event_state().

Forgot to mention. I think that before anything else we need
signal_wake_up_state(). For example, note that none of the callers
of signal_wake_up(resume => true) in ptrace code wants to wake up
the killable task.

Oleg.

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