On Fri, Oct 28, 2022 at 07:02:54PM +0100, Al Viro wrote: > Now, the last term in expression in blk_queue_may_bounce() is > true only on the boxen where max_pfn is no greater than max_low_pfn. > > Unless I'm very confused, that's the boxen where we don't *have* > any highmem pages. Yes, this go mixed up.
