ad62155cb6
This allows capping the total amount of memory that will be used for zram-swap, in addition to the percentage-based calculation, which is useful when blanket-applying a configuration to many machines. This is based off the strategy used by Fedora for their rollout of zram-swap-by-default in Fedora 33 (https://fedoraproject.org/wiki/Changes/SwapOnZRAM), which caps the maximum amount of memory used for zram at 4GiB. In future it might be good to port this to the systemd zram-generator, instead of using this separate infrastructure.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.