Merge PR #25544 into master

* refs/pull/25544/head:
	common/PriorityCache: Automatic chunk sizing

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/common/options.cc
Simple merge

diff --cc src/kv/KeyValueDB.h
Simple merge

diff --cc src/kv/RocksDBStore.cc
Simple merge

diff --cc src/os/bluestore/BlueStore.cc
Simple merge

diff --cc src/os/bluestore/BlueStore.h
Simple merge