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Date: Tue, 3 Apr 2007 21:25:13 +0200 From: "Rafael J. Wysocki" <rjw@...k.pl> To: ego@...ibm.com Cc: Srivatsa Vaddagiri <vatsa@...ibm.com>, Ingo Molnar <mingo@...e.hu>, akpm@...ux-foundation.org, paulmck@...ibm.com, torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...sign.ru>, dipankar@...ibm.com, dino@...ibm.com, masami.hiramatsu.pt@...achi.com Subject: Re: [RFC] Cpu-hotplug: Using the Process Freezer (try2) On Tuesday, 3 April 2007 16:15, Gautham R Shenoy wrote: > On Tue, Apr 03, 2007 at 06:26:19PM +0530, Srivatsa Vaddagiri wrote: > > > > Besides, how problematic is this in practise (that threads sleep for > > extended durations in TASK_INTERRUPTIBLE state breaking > > freezer/suspend/hotplug)? > > > > Should we ignore this for the timebeing and take up later as and when > > users report problems? > > In my case, the problem of freezer failing was due to the vfork freezer race > in do_fork. The parent task was waiting_for_completion() while the child was > frozen. > > Rafael has already sent out the fix for that, but for some reason I > don't see it in the -mm. Hm, freezer-fix-vfork-problem.patch is in -rc5-mm3. Is it the patch you're talking about or is there another one? Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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