[$] Android memory management

The Android system is designed to provide a responsive user experience onsystems that, in a relative sense at least, have limited amounts ofCPU and memory. Doing so requires a number of techniques, includingregular use of a low-memory process killer, that are not seen elsewhere. In amemory-management-track session at the 2019 Linux Storage, Filesystem, andMemory-Management Summit, Suren Baghdasaryan covered a number of issuesrelated to how Android ensures that interactive processes have enoughmemory to get their jobs done.