On Wed, Jun 14, 2023 at 9:48 PM Zhongkun He <hezhongkun.hzk@xxxxxxxxxxxxx> wrote: > > The compressed RAM is currently charged to kernel, not to > any memory cgroup, which is not satisfy our usage scenario. > if the memory of a task is limited by memcgroup, it will > swap out the memory to zram swap device when the memory > is insufficient. In that case, the memory limit will have > no effect. > > So, it should makes sense to charge the compressed RAM to > the page's memory cgroup. We used to do this a long time ago, but we had per-memcg swapfiles [1[ to prevent compressed pages from different memcgs from sharing the same zspage. Does this patchset alone suffer from the same problem, i.e., memcgs sharing zspages? [1] https://lwn.net/Articles/592923/
