On Sat, Jun 15, 2019 at 04:20:04PM +0800, Xi Ruoyao wrote: > Introduce a control file memory.watermark showing the watermark > consumption of the cgroup and its descendants, in bytes. > > Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> Memory usage w/o pressure metric isn't all that useful and reporting just the historical maximum of memory.current can be outright misleading. The use case of determining maximum amount of required memory is legit but it needs to maintain sustained positive pressure while taking measurements. There are efforts on this front, so let's not merge this one for now. Nacked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun