Merge pull request #9789 from batrick/i16164

mds: add maximum fragment size constraint

Reviewed-by: John Spray <john.spray@redhat.com>

diff --cc src/common/config_opts.h
Simple merge

diff --cc src/mds/MDCache.cc
Simple merge

diff --cc src/mds/MDCache.h
Simple merge

diff --cc src/mds/Server.cc
Simple merge

diff --cc src/mds/Server.h
Simple merge