linux-kernel - Re: pcmcia resume 60 second hang. Re: [patch 00/69] -stable review

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Date:	Thu, 24 May 2007 19:10:08 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Nigel Cunningham <nigel@...el.suspend2.net>
cc:	Pavel Machek <pavel@....cz>,
	Romano Giannetti <romanol@...omillas.es>,
	Chris Wright <chrisw@...s-sol.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	stable@...nel.org, Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	"Theodore Ts'o" <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: pcmcia resume 60 second hang. Re: [patch 00/69] -stable review



On Fri, 25 May 2007, Nigel Cunningham wrote:
> 
> First, let me agree with you that for the atomic copy itself, the
> freezer is unnecessary. Disabling irqs and so on is enough to ensure the
> atomic copy is atomic. I don't think any of us are arguing with you
> there.

First off, realize that the problem actually happens during 
suspend-to-ram.

Think about that for a second.

In fact, think about it for a _loong_ time. Because dammit, people seem to 
have a really hard time even realizing this.

	There is no "atomic copy".

	There is no "checkpointing".

	There is no "spoon".

> Hope this helps.

Hope _the_above_ helps. Why is it so hard for people to accept that 
suspend-to-ram shouldn't break because of some IDIOTIC issues with disk 
snapshots?

And why do you people _always_ keep mixing the two up?

			Linus
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