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From: Nigel Cunningham <nigel@nigel.suspend2.net>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: mjg59@srcf.ucam.org, nigel@suspend2.net,
	linux-kernel@vger.kernel.org, pavel@ucw.cz,
	linux-pm@lists.linux-foundation.org, mingo@elte.hu
Subject: Re: [RFC][PATCH -mm] PM: Do not sync filesystems from within the freezer
Date: Fri, 6 Jul 2007 19:13:56 +1000	[thread overview]
Message-ID: <200707061914.02972.nigel@nigel.suspend2.net> (raw)
In-Reply-To: <E1I6jlB-0003TC-00@dorka.pomaz.szeredi.hu>


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Hi.

On Friday 06 July 2007 19:05:53 Miklos Szeredi wrote:
> > On Fri, 2007-07-06 at 09:13 +0200, Miklos Szeredi wrote:
> > > 
> > > Another myth, that has been debunked already.  The problem is: how do
> > > you define fuse processes?  There's no theoretical or even practial
> > > way to do that.
> > 
> > It could if they told the kernel via some black magic ...
> > 
> > But that still suck. The freezer sucks :-)
> 
> Yeah, and it wouldn't work in practice, since the auxilary tasks might
> be part of a library which is not even aware of being used by a "fuse
> task".

This is why I think the whole concept of filesystems in userspace is broken. 
Trying to shift things that need special privilege and special handling to 
userspace is just asking for trouble. You can say it's the kernel code's 
fault, but then you have to explain why it's only fuse (yeah ok, and XFS) 
that have problems.

Regards,

Nigel
-- 
See http://www.tuxonice.net for Howtos, FAQs, mailing
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  parent reply	other threads:[~2007-07-06  9:13 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200707041658.59588.rjw@sisk.pl>
2007-07-04 22:48 ` [RFC][PATCH -mm] PM: Do not sync from within the freezer during suspend to RAM Nigel Cunningham
     [not found] ` <200707050848.16163.nigel@nigel.suspend2.net>
2007-07-04 22:49   ` Pavel Machek
     [not found]   ` <20070704224942.GD2491@elf.ucw.cz>
2007-07-04 22:52     ` Nigel Cunningham
     [not found]     ` <200707050852.15392.nigel@nigel.suspend2.net>
2007-07-05 11:28       ` Rafael J. Wysocki
2007-07-05 11:37         ` Nigel Cunningham
     [not found]         ` <200707052137.58164.nigel@nigel.suspend2.net>
     [not found]           ` <200707052231.27780.rjw@sisk.pl>
2007-07-05 22:00             ` [RFC][PATCH -mm] PM: Do not sync filesystems from within the freezer Pavel Machek
     [not found]             ` <20070705220046.GC3881@elf.ucw.cz>
2007-07-06  7:02               ` Rafael J. Wysocki
     [not found]               ` <200707060902.55090.rjw@sisk.pl>
2007-07-06  7:07                 ` Nigel Cunningham
2007-07-06  7:13                   ` Miklos Szeredi
2007-07-06  7:19                     ` Nigel Cunningham
     [not found]                     ` <200707061719.36054.nigel@nigel.suspend2.net>
2007-07-06  7:36                       ` Miklos Szeredi
     [not found]                       ` <E1I6iMD-0003Gl-00@dorka.pomaz.szeredi.hu>
2007-07-07 11:48                         ` possible solution for problem 2 (was Re: [RFC][PATCH -mm] PM: Do not sync filesystems from within the freezer) Pavel Machek
2007-07-06  8:59                     ` [RFC][PATCH -mm] PM: Do not sync filesystems from within the freezer Benjamin Herrenschmidt
2007-07-06  9:05                       ` Miklos Szeredi
     [not found]                       ` <E1I6jlB-0003TC-00@dorka.pomaz.szeredi.hu>
2007-07-06  9:13                         ` Nigel Cunningham [this message]
2007-07-06  9:31                           ` Miklos Szeredi
2007-07-06 10:00                             ` Rafael J. Wysocki

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