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Description of problem:
RHEL-8 kernel has the support for memory.min memory cgroup protection. This protection is a natural follow-up (probably even more useful) on memory.low. Since the kernel supports it we should too.

Version-Release number of selected component (if applicable):
systemd-239-18.el8


How reproducible:
always

Steps to Reproduce:
1. man systemd.resource-control


Actual results:
MemoryMin= is not mentioned and is not supported.

Expected results:
MemoryMin= is fully supported and works as expected with cgroup v2. 

Additional info:
https://github.com/systemd/systemd/commit/484226357789991de0b3363beb69258be06b4c92

fix merged to github master branch -> https://github.com/systemd-rhel/rhel-8/pull/101

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Low: systemd security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:4553