Hi. On 29/01/12 00:45, Rafael J. Wysocki wrote: > 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 > and/or initrd causing it to become inconsistent with the information > stored in the hibernation image. > > The user-space-driven hibernation (s2disk) is not covered by this > change, because the freezing of filesystems prevents s2disk from > accessing device special files it needs to do its job. > > This change is based on earlier work by Nigel Cunningham. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Nigel Cunningham <nigel@xxxxxxxxxxxx> (Or reviewed by or whatever :> I'm out of the loop too much, and don't remember what the right one is!) -- Evolution (n): A hypothetical process whereby improbable events occur with alarming frequency, order arises from chaos, and no one is given credit. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
