Hi. On Wed, 2005-02-09 at 09:32, Pavel Machek wrote: > Hi! > > > > > The main change involves the introduction of a new SYNCTHREAD flag. We > > > > use this to avoid deadlocking over processes that are running sys_sync > > > > and siblings. Processes that enter those routines get the flag added, > > > > and it's removed when they exit the sync routine. We then freeze in four > > > > stages: > > > > > > Is SYNCTHREAD neccessary for me, too, or is it needed for suspend2, only? > > > > It's necessary for reliable freezing under I/O load. Signalling the > > non-sync threads first removes the race involved in some threads > > submitting I/O while others are trying to sync. Try doing a dd and a > > sync at the same time. The sync can take ages to return, worst case, > > sometimes not until the dd is completed. (Actually, try doing anything > > while a dd is running :>) > > Okay, just attach this explanation when you are merging it otherwise > I'll surely ask again...
Okay. > > > > Finally I'd like to merge the support for freezer flags on workqueues. > > > > No comment here? :> > > :-). I forgot why it was neccessary, but I was too shy to ask > ;-). Just attach nice explanation when you attempt to merge it. Okay. Thanks! Nigel -- Nigel Cunningham Software Engineer, Canberra, Australia http://www.cyclades.com Ph: +61 (2) 6292 8028 Mob: +61 (417) 100 574 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
