>= 12.2.0
---------

- *CephFS*:

  * Limiting MDS cache via a memory limit is now supported using the new
    mds_cache_memory_limit config option (1GB by default).  A cache reservation
    can also be specified using mds_cache_reservation as a percentage of the
    limit (5% by default). Limits by inode count are still supported using
    mds_cache_size. Setting mds_cache_size to 0 (the default) disables the
    inode limit.