Re: [RFC][PATCH] PM / Sleep: Freeze filesystems during system suspend/hibernation

[Rafael J. Wysocki]

On Sunday, January 29, 2012, Martin Steigerwald wrote:
> Am Samstag, 28. Januar 2012 schrieb Rafael J. Wysocki:
> > From: Rafael J. Wysocki <rjw@xxxxxxx>
> > 
> > Freeze all filesystems during system suspend and (kernel-driven)
> > hibernation by calling freeze_supers() for all superblocks and thaw
> > them during the subsequent resume with the help of thaw_supers().
> > 
> > This makes filesystems stay in a consistent state in case something
> > goes wrong between system suspend (or hibernation) and the subsequent
> > resume (e.g. journal replays won't be necessary in those cases).  In
> > particular, this should help to solve a long-standing issue that, in
> > some cases, during resume from hibernation the boot loader causes the
> > journal to be replied for the filesystem containing the kernel image
> 
> replied => replayed

Right, thanks!

Rafael
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