On 10.04.2019 22:13, Waiman Long wrote: > The current control mechanism for memory cgroup v2 lumps all the memory > together irrespective of the type of memory objects. However, there > are cases where users may have more concern about one type of memory > usage than the others. > > We have customer request to limit memory consumption on anonymous memory > only as they said the feature was available in other OSes like Solaris. > > To allow finer-grained control of memory, this patchset 2 new control > knobs for memory controller: > - memory.subset.list for specifying the type of memory to be under control. > - memory.subset.high for the high limit of memory consumption of that > memory type. > > For simplicity, the limit is not hierarchical and applies to only tasks > in the local memory cgroup. > > Waiman Long (2): > mm/memcontrol: Finer-grained control for subset of allocated memory > mm/memcontrol: Add a new MEMCG_SUBSET_HIGH event > > Documentation/admin-guide/cgroup-v2.rst | 35 +++++++++ > include/linux/memcontrol.h | 8 ++ > mm/memcontrol.c | 100 +++++++++++++++++++++++- > 3 files changed, 142 insertions(+), 1 deletion(-) CC Andrey. In Virtuozzo kernel we have similar functionality for limitation of page cache in a cgroup: https://github.com/OpenVZ/vzkernel/commit/8ceef5e0c07c7621fcb0e04ccc48a679dfeec4a4
