Re: Back to the future.
From: Rafael J. Wysocki
Date: Sat Apr 28 2007 - 15:11:08 EST
On Saturday, 28 April 2007 20:32, David Lang wrote:
> On Sat, 28 Apr 2007, Pavel Machek wrote:
> >> We freeze user space processes for the reasons that you have quoted above.
> >> Why we freeze kernel threads in there too is a good question, but not for me to
> >> answer. I don't know. Pavel should know, I think.
> > We do not want kernel threads running:
> > a) they may hold some locks and deadlock suspend
> > b) they may do some writes to disk, leading to corruption
> > We could solve a) by carefully auditing suspend lock usage to make
> > sure deadlocks are impossible even with kernel threads running.
> remember that we are doing suspend-to-disk, after we do the snapshot we will be
> doing a shutdown. that should simplify the locking issues
That's assuming that we won't need to cancel the hibernation.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/