On Fri, 3 Dec 2010 00:40:36 +0100 "Rafael J. Wysocki" <rjw@xxxxxxx> wrote: > From: Rafael J. Wysocki <rjw@xxxxxxx> > > There is a problem that swap pages allocated before the creation of > a hibernation image can be released and used for storing the contents > of different memory pages while the image is being saved. Since the > kernel stored in the image doesn't know of that, it causes memory > corruption to occur after resume from hibernation, especially on > systems with relatively small RAM that need to swap often. > > This issue can be addressed by keeping the GFP_IOFS bits clear > in gfp_allowed_mask during the entire hibernation, including the > saving of the image, until the system is finally turned off or > the hibernation is aborted. Unfortunately, for this purpose > it's necessary to rework the way in which the hibernate and > suspend code manipulates gfp_allowed_mask. > > This change is based on an earlier patch from Hugh Dickins. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> > Reported-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx> > Acked-by: Hugh Dickins <hughd@xxxxxxxxxx> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Thanks, -Kame _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
