On Fri, May 6, 2022 at 4:33 AM Shakeel Butt <shakeelb@xxxxxxxxxx> wrote: > > On Thu, Apr 28, 2022 at 9:54 AM Yang Shi <shy828301@xxxxxxxxx> wrote: > > > [...] > > > Yes, we have some modifications to zswap to make it work without any > > > backing real swap. Though there is a future plan to move to zram > > > eventually. > > > > Interesting, if so why not just simply use zram? > > > > Historical reasons. When we started trying out the zswap, I think zram > was still in staging or not stable enough (Suleiman can give a better > answer). One of the reasons we chose zswap instead of zram is that zswap can reject pages. Also, we wanted to have per-memcg pools, which zswap made much easier to do. -- Suleiman
