linux-kernel - Re: [RFC][PATCH] PM / Sleep: Freeze filesystems during system suspend/hibernation

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Date:	Tue, 31 Jan 2012 08:10:37 +1100
From:	Nigel Cunningham <nigel@...onice.net>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Jan Kara <jack@...e.cz>, Linux PM list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org, Dave Chinner <david@...morbit.com>,
	Pavel Machek <pavel@....cz>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [RFC][PATCH] PM / Sleep: Freeze filesystems during system suspend/hibernation

Hi.

On 31/01/12 08:05, Rafael J. Wysocki wrote:
> On Monday, January 30, 2012, Jan Kara wrote:
>> On Sat 28-01-12 14:45:49, Rafael J. Wysocki wrote:
>>> +	/*
>>> +	 * Freeze in reverse order so filesystems depending on others are
>>> +	 * frozen in the right order (eg. loopback on ext3).
>>> +	 */
>>   Ho, hum, are you sure the order in super_blocks list is the one you need?
>> Maybe it is but I'm not sure you are guaranteed it is.
> 
> Well, is there any way I can get the right order?

Jan, what's the case where the reverse of mount order might be the wrong
order?

Regards,

Nigel
-- 
Evolution (n): A hypothetical process whereby improbable
events occur with alarming frequency, order arises from chaos, and
no one is given credit.
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