mds/MDSRank: forward-declare boost::asio::io_context

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>

diff --git a/src/mds/MDSRank.h b/src/mds/MDSRank.h
index 20754fec4177c33d657ab8b38f0b1e02eb0589ef..9f31b00900ce8ec2bd8ae34f2dfd91a317dbcf12 100644 (file)
--- a/src/mds/MDSRank.h
+++ b/src/mds/MDSRank.h
@@ -18,8 +18,6 @@
 #include <atomic>
 #include <string_view>
 
-#include <boost/asio/io_context.hpp>
-
 #include "common/DecayCounter.h"
 #include "common/LogClient.h"
 #include "common/Timer.h"
@@ -50,6 +48,8 @@
 // benefit of those including this header and using MDSRank::logger
 #include "common/perf_counters.h"
 
+namespace boost::asio { class io_context; }
+
 enum {
   l_mds_first = 2000,
   l_mds_request,