On Tue, 2007-08-21 at 16:05 +1000, Dave Airlie wrote: > So you can see why some sort of uncached+writecombined page cache > would be useful, I could just allocate a bunch of pages at startup as > uncached+writecombined, and allocate pixmaps from them and when I > bind/free the pixmap I don't need the flush at all, now I'd really > like this to be part of the VM so that under memory pressure it can > just take the pages I've got in my cache back and after flushing turn > them back into cached pages, the other option is for the DRM to do > this on its own and penalise the whole system.
Can't you make these pages part of the regular VM by sticking them all into an address_space. And for this reclaim behaviour you'd only need to set PG_private and have a_ops->releasepage() dtrt. - 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/
