linux-kernel - Re: [linux-pm] Freezer: Don't count threads waiting for frozen filesystems.

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Message-Id: <1225371842.8576.6.camel@nigel-laptop>
Date:	Fri, 31 Oct 2008 00:04:02 +1100
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	rjw@...k.pl, stern@...land.harvard.edu,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-pm] Freezer: Don't count threads waiting for frozen
	filesystems.

Hi.

On Thu, 2008-10-30 at 00:48 +0100, Miklos Szeredi wrote:
> On Thu, 30 Oct 2008, Nigel Cunningham wrote:
> > Hi.
> > 
> > On Wed, 2008-10-29 at 22:11 +0100, Rafael J. Wysocki wrote:
> > > The current design of the freezer is rather simplistic and I'm not really sure
> > > it's the best one possible.  Perhaps we can redesign the freezer to work
> > > differently and handle the cases like fuse.
> > 
> > Why redo what I've already done? In the full patch, you have the basis
> > of what you're talking about. I haven't seen a failure to freeze fuse or
> > anything else in a year of use.
> 
> Well yeah, your patch handles the straightforward cases.  But it
> doesn't help with the more tricky cases, where one fuse filesystem is
> using another, and as those may become more widespread, this approach
> will fail.

At the moment, yes. But it's not impossible for us to modify the patch
to handle that as well.

Regards,

Nigel

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