Merge PR #19760 into master

* refs/pull/19760/head:
	mds: add dump flag for CInode
	mds: add command "openfiles ls"

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>

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

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

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

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