On (23/04/06 15:43), Sergey Senozhatsky wrote: > On (23/04/04 17:05), Christoph Hellwig wrote: > > > > I don't actually have a large PAGE_SIZE system to test that path on. > > Likewise. Don't have a large PAGE_SIZE system, so tested on a 4k x86_64. Hold on... Something isn't right with the writeback test. It doesn't look like reads of ZRAM_WB pages work.