On Tue, 11 Oct 2011 08:18:19 +0200 Pavel Machek <pavel@xxxxxx> wrote: > Hi! > > > We've had a number of reports recently of people with NFS and CIFS > > mounts that were unable to suspend or hibernate their machines. Here > > are a couple of Fedora bugs that illustrate the problem: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=712088 > > https://bugzilla.redhat.com/show_bug.cgi?id=717735 > > > > When it occurs the problem is pretty clear. We have a task that's > > sleeping in the kernel in TASK_KILLABLE sleep, generally waiting > > for a reply to come in. Often though, userspace has already taken > > down the interface so that reply will never come. The process then > > fails to freeze and the suspend fails. > > Userspace should not take interface down for suspend (*). Why do that? > I suspect that NetworkManager does this to try and allow for the case where someone suspends their laptop and then wanders off to another network and then resumes. Either way, we still want to allow suspend and hibernate to work regardless of what userspace does during the process. > > This patch fixes this by allowing the TASK_KILLABLE sleeps in NFS and > > CIFS to be awoken by the freezer and then to try to freeze. If a freeze > > event does occur, then the code will treat it as if a schedule() has > > already occured. > > Looks like good idea... > > (*) unless absolutely neccessary. openvpn? > Thanks for looking. -- Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
