crimson/os/seastore/../segment_manager: suppress compile warning about unused logger

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>

diff --git a/src/crimson/os/seastore/segment_manager.cc b/src/crimson/os/seastore/segment_manager.cc
index 8ba186948d245a60a75cbf19eddf1cd4c3e43512..e5c4df6f8fcb16715f407f1b1ca7ac9fa3e7bbaa 100644 (file)
--- a/src/crimson/os/seastore/segment_manager.cc
+++ b/src/crimson/os/seastore/segment_manager.cc
@@ -11,9 +11,13 @@
 #endif
 
 namespace{
-  seastar::logger &logger(){
-    return crimson::get_logger(ceph_subsys_seastore_device);
-  }
+
+#ifdef HAVE_ZNS
+seastar::logger &logger(){
+  return crimson::get_logger(ceph_subsys_seastore_device);
+}
+#endif
+
 }
 
 namespace crimson::os::seastore {