Hi. On Sun, 2007-04-22 at 11:37 +0200, Rafael J. Wysocki wrote: > On Sunday, 22 April 2007 01:31, Nigel Cunningham wrote: > > Hi. > > > > On Sun, 2007-04-22 at 00:05 +0200, Rafael J. Wysocki wrote: > > > From: Rafael J. Wysocki <rjw@xxxxxxx> > > > > > > Move the definition of PAGES_FOR_IO to kernel/power/power.h and introduce > > > SPARE_PAGES representing the number of pages that should be freed by the > > > swsusp's memory shrinker in addition to PAGES_FOR_IO so that device drivers can > > > allocate some memory (up to 1 MB total) in their .suspend() routines without > > > causing the suspend to fail. > > > > 1MB is not going to be enough for people with DRI. I have a cycle on my > > machine recording 3510 extra pages (13 meg) allocated during the atomic > > copy, and I know there are others with larger numbers. > > I know. The other mechanism (ie. notifiers) is for them. > > The idea of this patch is to make it possible to _avoid_ using the notifiers > if you need only a limited amount of memory. That's fine when the notifiers are actually used, but for the moment.... Regards, Nigel
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