From: Greg Farnum <greg@inktank.com>
Date: Fri, 21 Mar 2014 22:44:55 +0000 (-0700)
Subject: OSD: pass a pointer to last_sent_epoch instead of the whole Session
X-Git-Tag: v0.81~57^2~17
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=399e67f884bb81d7b51385f00e02426ff5148d3a;p=ceph.git

OSD: pass a pointer to last_sent_epoch instead of the whole Session

We don't use any other part of the Session, and this interface will
be easier to move out of the OSD class.

Signed-off-by: Greg Farnum <greg@inktank.com>
---

diff --git a/src/osd/OSD.cc b/src/osd/OSD.cc
index 23b94090cfff..acd953511d3f 100644
--- a/src/osd/OSD.cc
+++ b/src/osd/OSD.cc
@@ -4653,7 +4653,8 @@ void OSD::forget_peer_epoch(int peer, epoch_t as_of)
 }
 
 bool OSD::_should_share_map(entity_name_t name, Connection *con,
-                            epoch_t epoch, OSDMapRef& osdmap, Session *session)
+                            epoch_t epoch, OSDMapRef& osdmap,
+                            const epoch_t *sent_epoch_p)
 {
   bool should_send = false;
   dout(20) << "_should_share_map "
@@ -4663,11 +4664,11 @@ bool OSD::_should_share_map(entity_name_t name, Connection *con,
   // does client have old map?
   if (name.is_client()) {
     bool message_sendmap = epoch < osdmap->get_epoch();
-    if (message_sendmap && session) {
+    if (message_sendmap && sent_epoch_p) {
       dout(20) << "client session last_sent_epoch: "
-               << session->last_sent_epoch
+               << *sent_epoch_p
                << " versus osdmap epoch " << osdmap->get_epoch() << dendl;
-      if (session->last_sent_epoch < osdmap->get_epoch()) {
+      if (*sent_epoch_p < osdmap->get_epoch()) {
         should_send = true;
       } // else we don't need to send it out again
     }
@@ -4697,7 +4698,7 @@ void OSD::_share_map_incoming(
   Connection *con,
   epoch_t epoch,
   OSDMapRef& osdmap,
-  Session* session)
+  epoch_t *sent_epoch_p)
 {
   dout(20) << "_share_map_incoming "
 	   << name << " " << con->get_peer_addr()
@@ -4705,14 +4706,15 @@ void OSD::_share_map_incoming(
 
   assert(is_active());
 
-  bool want_shared = _should_share_map(name, con, epoch, osdmap, session);
+  bool want_shared = _should_share_map(name, con, epoch,
+                                       osdmap, sent_epoch_p);
 
   if (want_shared){
     if (name.is_client()) {
       dout(10) << name << " has old map " << epoch
           << " < " << osdmap->get_epoch() << dendl;
       // we know the Session is valid or we wouldn't be sending
-      session->last_sent_epoch = osdmap->get_epoch();
+      *sent_epoch_p = osdmap->get_epoch();
       send_incremental_map(epoch, con, osdmap);
     } else if (con->get_messenger() == cluster_messenger &&
         osdmap->is_up(name.num()) &&
@@ -7491,7 +7493,7 @@ struct send_map_on_destruct {
         con.get(),
         map_epoch,
         osdmap,
-        client_session);
+        client_session ? &client_session->last_sent_epoch : NULL);
     if (client_session) {
       client_session->sent_epoch_lock.Unlock();
       client_session->put();
@@ -7656,7 +7658,7 @@ void OSD::handle_replica_op(OpRequestRef op, OSDMapRef osdmap)
   _share_map_incoming(
     m->get_source(), m->get_connection().get(), m->map_epoch,
     osdmap,
-    peer_session);
+    NULL);
   if (peer_session) {
     peer_session->sent_epoch_lock.Unlock();
     peer_session->put();
@@ -7804,8 +7806,7 @@ void OSD::dequeue_op(
         m->get_connection().get(),
         op->sent_epoch,
         osdmap,
-        session
-    );
+        session ? &session->last_sent_epoch : NULL);
     if (session) {
       session->sent_epoch_lock.Unlock();
       session->put();
diff --git a/src/osd/OSD.h b/src/osd/OSD.h
index aedd5f6f77fb..7d22df6443fb 100644
--- a/src/osd/OSD.h
+++ b/src/osd/OSD.h
@@ -1343,9 +1343,9 @@ private:
 
   friend struct send_map_on_destruct;
   bool _should_share_map(entity_name_t name, Connection *con, epoch_t epoch,
-                         OSDMapRef& osdmap, Session *session);
+                         OSDMapRef& osdmap, const epoch_t *sent_epoch_p);
   void _share_map_incoming(entity_name_t name, Connection *con, epoch_t epoch,
-			   OSDMapRef& osdmap, Session *session);
+			   OSDMapRef& osdmap, epoch_t *sent_epoch_p);
   void _share_map_outgoing(int peer, Connection *con,
 			   OSDMapRef map = OSDMapRef());