CEPH_MOUNT_SHUTDOWN
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (READ_ONCE(mdsc->fsc->mount_state) >= CEPH_MOUNT_SHUTDOWN)
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
fsc->mount_state = CEPH_MOUNT_SHUTDOWN;
if (fsc->mount_state == CEPH_MOUNT_SHUTDOWN) {
return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN;