Re: [linux-pm] [PATCH] PM / Hibernate: Restore old swap signatureto avoid user space breakage

[Karel Zak]

On Mon, Dec 06, 2010 at 10:36:55AM +1100, Bojan Smojver wrote:
> On Sun, 2010-12-05 at 23:24 +0100, Rafael J. Wysocki wrote:
> > Commit 3624eb0 (PM / Hibernate: Modify signature used to mark swap)
> > modified hibernate signature used to mark swap partitions containing
> > hibernation images, but that turns out to have caused problems in
> > libblkid on recent Ubuntu.  Restore the old signature to avoid those
> > problems. 
> 
> Don't quite understand this change (sorry, probably just being obtuse).

 I too.

> The signature was changed to make sure older kernels don't handle
> compressed images by accident, right? If so, this would seem like a bad
> idea, because this is what can actually happen now.
> 
> Shouldn't user space learn how to handle both signatures instead?

 The upstream libblkid has been updated, there is not a problem to
 support more signatures.

    Karel

-- 
 Karel Zak  <kzak@xxxxxxxxxx>
 http://karelzak.blogspot.com
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