linux-kernel - Re: [RFC v2 PATCH 2/4] block: add queue runtime pm callbacks

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Message-ID: <CAF1ivSYmY3d8VonvsX0orsj0fLKXOXsLoG5jSwLs90MoP7=5Dw@mail.gmail.com>
Date:	Mon, 21 May 2012 22:41:43 +0800
From:	Lin Ming <ming.m.lin@...el.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Jens Axboe <axboe@...nel.dk>, Jeff Moyer <jmoyer@...hat.com>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: [RFC v2 PATCH 2/4] block: add queue runtime pm callbacks

On Fri, May 18, 2012 at 2:29 AM, Alan Stern <stern@...land.harvard.edu> wrote:
[snip]
> I may have left some parts out from this brief description.  Hopefully
> you'll be able to figure out the general idea and get it to work.

All journal threads and flusher thread of the disk need to be freezed
before suspend and thaw after resume.

>
> Alan Stern
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