Merge PR #24020 into master

* refs/pull/24020/head:
	*: set missing CLOEXEC on opened fds
	msg: set O_NONBLOCK on file status flags

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

diff --cc CMakeLists.txt
Simple merge

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

diff --cc src/include/compat.h
Simple merge

diff --cc src/include/denc.h
Simple merge

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