Messages in this thread | | | Subject | Re: [PATCH] Freeze bdevs when freezing processes. | From | Nigel Cunningham <> | Date | Tue, 24 Oct 2006 09:05:19 +1000 |
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Hi.
On Mon, 2006-10-23 at 16:20 +0200, Rafael J. Wysocki wrote: > On Monday, 23 October 2006 16:15, Nick Piggin wrote: > > Rafael J. Wysocki wrote: > > > > > This case is a bit special. I don't think it would be right to require every > > > device driver writer to avoid modifying RCU pages from the interrupt > > > context, because that would break the suspend to disk ... > > > > > > Besides, if there is an RCU page that we _know_ we can use to store the image > > > in it, we can just include this page in the image without copying. This > > > already gives us one extra free page for the rest of the image and we can > > > _avoid_ creating two images which suspend2 does and which adds a _lot_ of > > > complexity to the code. > > > > If you don't mind me asking... what are these RCU pages you speak of? > > I couldn't work it out by grepping kernel/power/* > > Oops, s/RCU/LRU/g (shame, shame). > > Sorry for the confusion.
Ah. I wondered where RCU came into the picture, but was willing to go with the theory that you knew something I didn't :)
Nigel
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