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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@suspend2.net>,
	Nick Piggin <nickpiggin@yahoo.com.au>,
	LKML <linux-kernel@vger.kernel.org>, Linux PM <linux-pm@osdl.org>
Subject: Re: [RFC][PATCH] swsusp: support creating bigger images
Date: Wed, 26 Apr 2006 00:43:02 +0200	[thread overview]
Message-ID: <200604260043.03481.rjw@sisk.pl> (raw)
In-Reply-To: <20060425222526.GG6379@elf.ucw.cz>

Hi,

On Wednesday 26 April 2006 00:25, Pavel Machek wrote:
> > > It does apply to all of the LRU pages. This is what I've been doing for years 
> > > now. The only corner case I've come across is XFS. It still wants to write 
> > > data even when there's nothing to do and it's threads are frozen (IIRC - 
> > > haven't looked at it for a while). I got around that by freezing bdevs when 
> > > freezing processes.
> > 
> > This means if we freeze bdevs, we'll be able to save all of the LRU pages,
> > except for the pages mapped by the current task, without copying.  I think we
> > can try to do this, but we'll need a patch to freeze bdevs for this purpose. ;-)
> 
> ...adding more dependencies to how vm/blockdevs work. I'd say current
> code is complex enough...

Well, why don't we see the patch?  If it's too complex, we can just decide not
to use it. :-)

Greetings,
Rafael

WARNING: multiple messages have this Message-ID (diff)
From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@suspend2.net>,
	Nick Piggin <nickpiggin@yahoo.com.au>,
	Linux PM <linux-pm@osdl.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH] swsusp: support creating bigger images
Date: Wed, 26 Apr 2006 00:43:02 +0200	[thread overview]
Message-ID: <200604260043.03481.rjw@sisk.pl> (raw)
In-Reply-To: <20060425222526.GG6379@elf.ucw.cz>

Hi,

On Wednesday 26 April 2006 00:25, Pavel Machek wrote:
> > > It does apply to all of the LRU pages. This is what I've been doing for years 
> > > now. The only corner case I've come across is XFS. It still wants to write 
> > > data even when there's nothing to do and it's threads are frozen (IIRC - 
> > > haven't looked at it for a while). I got around that by freezing bdevs when 
> > > freezing processes.
> > 
> > This means if we freeze bdevs, we'll be able to save all of the LRU pages,
> > except for the pages mapped by the current task, without copying.  I think we
> > can try to do this, but we'll need a patch to freeze bdevs for this purpose. ;-)
> 
> ...adding more dependencies to how vm/blockdevs work. I'd say current
> code is complex enough...

Well, why don't we see the patch?  If it's too complex, we can just decide not
to use it. :-)

Greetings,
Rafael

  parent reply	other threads:[~2006-04-25 22:43 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-24 21:55 [RFC][PATCH] swsusp: support creating bigger images Rafael J. Wysocki
2006-04-24 22:16 ` Pavel Machek
2006-04-25  8:26   ` Rafael J. Wysocki
2006-04-25  8:26     ` Rafael J. Wysocki
2006-04-25 10:04     ` Pavel Machek
2006-04-25 10:04       ` Pavel Machek
2006-04-25 10:31       ` Rafael J. Wysocki
2006-04-25 10:31         ` Rafael J. Wysocki
2006-04-27 15:27         ` Rafael J. Wysocki
2006-04-27 15:27           ` Rafael J. Wysocki
2006-04-27 20:55           ` Pavel Machek
2006-04-28  9:19             ` Rafael J. Wysocki
2006-04-28  9:19               ` Rafael J. Wysocki
2006-04-28  9:23               ` Pavel Machek
2006-04-28  9:23                 ` Pavel Machek
2006-04-25 10:28 ` Nick Piggin
2006-04-25 15:39   ` Rafael J. Wysocki
2006-04-25 20:32     ` Pavel Machek
2006-04-25 21:12       ` Rafael J. Wysocki
2006-04-25 21:12         ` Rafael J. Wysocki
2006-04-25 21:18         ` Nigel Cunningham
2006-04-25 21:18           ` Nigel Cunningham
2006-04-25 22:21           ` Rafael J. Wysocki
2006-04-25 22:21             ` Rafael J. Wysocki
2006-04-25 22:24             ` Nigel Cunningham
2006-04-25 22:24               ` Nigel Cunningham
2006-04-25 22:38               ` Rafael J. Wysocki
2006-04-25 22:38                 ` Rafael J. Wysocki
2006-04-25 22:25             ` Pavel Machek
2006-04-25 22:25               ` Pavel Machek
2006-04-25 22:30               ` Nigel Cunningham
2006-04-25 22:30                 ` Nigel Cunningham
2006-04-25 22:36                 ` Pavel Machek
2006-04-25 22:36                   ` Pavel Machek
2006-04-25 22:43               ` Rafael J. Wysocki [this message]
2006-04-25 22:43                 ` Rafael J. Wysocki
2006-04-26  0:49                 ` Nigel Cunningham
2006-04-30 12:27                   ` Rafael J. Wysocki
2006-04-30 12:27                     ` Rafael J. Wysocki
2006-05-01  1:49                     ` Nigel Cunningham
2006-05-01  1:49                       ` Nigel Cunningham
2006-05-01 11:20                       ` Rafael J. Wysocki
2006-05-01 22:56                         ` Nigel Cunningham
2006-04-26  2:24             ` Nick Piggin
2006-04-26  2:24               ` Nick Piggin
2006-04-26  3:41               ` Nigel Cunningham
2006-04-26 16:22                 ` Nick Piggin
2006-04-26 21:16                   ` Rafael J. Wysocki
2006-04-26 21:16                     ` Rafael J. Wysocki
2006-04-26  8:10               ` Pavel Machek
2006-04-26  8:10                 ` Pavel Machek
2006-04-27 19:53     ` [RFC][PATCH] swsusp: support creating bigger images (rev. 2) Rafael J. Wysocki
2006-04-27 19:53       ` Rafael J. Wysocki

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