linux-kernel - Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy)

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Message-ID: <20070426113525.GA1332@infradead.org>
Date:	Thu, 26 Apr 2007 12:35:26 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Pavel Machek <pavel@....cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>, Mike Galbraith <efault@....de>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Con Kolivas <kernel@...ivas.org>,
	suspend2-devel@...ts.suspend2.net, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy)

On Thu, Apr 26, 2007 at 12:17:12PM +0200, Johannes Berg wrote:
> On Tue, 2007-04-24 at 23:24 +0200, Pavel Machek wrote:
> 
> > I believe uswsusp user/kernel separation is clean enough. Kernel
> > provides "snapshot image" and "resume image". (Thanks go to Rafael for
> > very clean interface).
> 
> The interface isn't even 64/32-bit compatible...

It's not .  And it's one of the worst interface I've seen lately.
Did anyone actually review this crap before it went in?  I completely
agree with Linus that these kind of boundaries that lead to horribly
complex ioctl interface are totally wrong.

Now suspend2 wasn't exactly nice either when I last reviewed it,
but we should probably give it another attempt if we can sort out
a proper incremental merge.

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