Linux-libre 4.3.2-gnu

4 files changed, 66 insertions, 49 deletions

diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 7df88a6dd..6918f30d0 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -1465,39 +1465,46 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
 	if (status == -ENOPROTOOPT) {
 		status = 0;
 		*response = JOIN_OK_NO_MAP;
-	} else if (packet.code == JOIN_DISALLOW ||
-		   packet.code == JOIN_OK_NO_MAP) {
-		*response = packet.code;
-	} else if (packet.code == JOIN_PROTOCOL_MISMATCH) {
-		mlog(ML_NOTICE,
-		     "This node requested DLM locking protocol %u.%u and "
-		     "filesystem locking protocol %u.%u.  At least one of "
-		     "the protocol versions on node %d is not compatible, "
-		     "disconnecting\n",
-		     dlm->dlm_locking_proto.pv_major,
-		     dlm->dlm_locking_proto.pv_minor,
-		     dlm->fs_locking_proto.pv_major,
-		     dlm->fs_locking_proto.pv_minor,
-		     node);
-		status = -EPROTO;
-		*response = packet.code;
-	} else if (packet.code == JOIN_OK) {
-		*response = packet.code;
-		/* Use the same locking protocol as the remote node */
-		dlm->dlm_locking_proto.pv_minor = packet.dlm_minor;
-		dlm->fs_locking_proto.pv_minor = packet.fs_minor;
-		mlog(0,
-		     "Node %d responds JOIN_OK with DLM locking protocol "
-		     "%u.%u and fs locking protocol %u.%u\n",
-		     node,
-		     dlm->dlm_locking_proto.pv_major,
-		     dlm->dlm_locking_proto.pv_minor,
-		     dlm->fs_locking_proto.pv_major,
-		     dlm->fs_locking_proto.pv_minor);
 	} else {
-		status = -EINVAL;
-		mlog(ML_ERROR, "invalid response %d from node %u\n",
-		     packet.code, node);
+		*response = packet.code;
+		switch (packet.code) {
+		case JOIN_DISALLOW:
+		case JOIN_OK_NO_MAP:
+			break;
+		case JOIN_PROTOCOL_MISMATCH:
+			mlog(ML_NOTICE,
+			     "This node requested DLM locking protocol %u.%u and "
+			     "filesystem locking protocol %u.%u.  At least one of "
+			     "the protocol versions on node %d is not compatible, "
+			     "disconnecting\n",
+			     dlm->dlm_locking_proto.pv_major,
+			     dlm->dlm_locking_proto.pv_minor,
+			     dlm->fs_locking_proto.pv_major,
+			     dlm->fs_locking_proto.pv_minor,
+			     node);
+			status = -EPROTO;
+			break;
+		case JOIN_OK:
+			/* Use the same locking protocol as the remote node */
+			dlm->dlm_locking_proto.pv_minor = packet.dlm_minor;
+			dlm->fs_locking_proto.pv_minor = packet.fs_minor;
+			mlog(0,
+			     "Node %d responds JOIN_OK with DLM locking protocol "
+			     "%u.%u and fs locking protocol %u.%u\n",
+			     node,
+			     dlm->dlm_locking_proto.pv_major,
+			     dlm->dlm_locking_proto.pv_minor,
+			     dlm->fs_locking_proto.pv_major,
+			     dlm->fs_locking_proto.pv_minor);
+			break;
+		default:
+			status = -EINVAL;
+			mlog(ML_ERROR, "invalid response %d from node %u\n",
+			     packet.code, node);
+			/* Reset response to JOIN_DISALLOW */
+			*response = JOIN_DISALLOW;
+			break;
+		}
 	}
 
 	mlog(0, "status %d, node %d response is %d\n", status, node,
@@ -1725,12 +1732,13 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm)
 
 	o2hb_setup_callback(&dlm->dlm_hb_down, O2HB_NODE_DOWN_CB,
 			    dlm_hb_node_down_cb, dlm, DLM_HB_NODE_DOWN_PRI);
+	o2hb_setup_callback(&dlm->dlm_hb_up, O2HB_NODE_UP_CB,
+			    dlm_hb_node_up_cb, dlm, DLM_HB_NODE_UP_PRI);
+
 	status = o2hb_register_callback(dlm->name, &dlm->dlm_hb_down);
 	if (status)
 		goto bail;
 
-	o2hb_setup_callback(&dlm->dlm_hb_up, O2HB_NODE_UP_CB,
-			    dlm_hb_node_up_cb, dlm, DLM_HB_NODE_UP_PRI);
 	status = o2hb_register_callback(dlm->name, &dlm->dlm_hb_up);
 	if (status)
 		goto bail;
@@ -1845,8 +1853,6 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm)
 					sizeof(struct dlm_exit_domain),
 					dlm_begin_exit_domain_handler,
 					dlm, NULL, &dlm->dlm_domain_handlers);
-	if (status)
-		goto bail;
 
 bail:
 	if (status)
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 482cfd344..ce38b4ccc 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -498,16 +498,6 @@ static void dlm_lockres_release(struct kref *kref)
 	mlog(0, "destroying lockres %.*s\n", res->lockname.len,
 	     res->lockname.name);
 
-	spin_lock(&dlm->track_lock);
-	if (!list_empty(&res->tracking))
-		list_del_init(&res->tracking);
-	else {
-		mlog(ML_ERROR, "Resource %.*s not on the Tracking list\n",
-		     res->lockname.len, res->lockname.name);
-		dlm_print_one_lock_resource(res);
-	}
-	spin_unlock(&dlm->track_lock);
-
 	atomic_dec(&dlm->res_cur_count);
 
 	if (!hlist_unhashed(&res->hash_node) ||
@@ -795,8 +785,18 @@ lookup:
 		dlm_lockres_grab_inflight_ref(dlm, tmpres);
 
 		spin_unlock(&tmpres->spinlock);
-		if (res)
+		if (res) {
+			spin_lock(&dlm->track_lock);
+			if (!list_empty(&res->tracking))
+				list_del_init(&res->tracking);
+			else
+				mlog(ML_ERROR, "Resource %.*s not "
+						"on the Tracking list\n",
+						res->lockname.len,
+						res->lockname.name);
+			spin_unlock(&dlm->track_lock);
 			dlm_lockres_put(res);
+		}
 		res = tmpres;
 		goto leave;
 	}
@@ -1658,12 +1658,13 @@ send_response:
 		if (ret < 0) {
 			mlog(ML_ERROR, "failed to dispatch assert master work\n");
 			response = DLM_MASTER_RESP_ERROR;
+			spin_unlock(&res->spinlock);
 			dlm_lockres_put(res);
 		} else {
 			dispatched = 1;
 			__dlm_lockres_grab_inflight_worker(dlm, res);
+			spin_unlock(&res->spinlock);
 		}
-		spin_unlock(&res->spinlock);
 	} else {
 		if (res)
 			dlm_lockres_put(res);
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 3d90ad7ff..58eaa5c0d 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1723,8 +1723,8 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
 			} else {
 				dispatched = 1;
 				__dlm_lockres_grab_inflight_worker(dlm, res);
+				spin_unlock(&res->spinlock);
 			}
-			spin_unlock(&res->spinlock);
 		} else {
 			/* put.. incase we are not the master */
 			spin_unlock(&res->spinlock);
diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c
index 69aac6f08..2e5e6d5ff 100644
--- a/fs/ocfs2/dlm/dlmthread.c
+++ b/fs/ocfs2/dlm/dlmthread.c
@@ -211,6 +211,16 @@ static void dlm_purge_lockres(struct dlm_ctxt *dlm,
 
 	__dlm_unhash_lockres(dlm, res);
 
+	spin_lock(&dlm->track_lock);
+	if (!list_empty(&res->tracking))
+		list_del_init(&res->tracking);
+	else {
+		mlog(ML_ERROR, "Resource %.*s not on the Tracking list\n",
+				res->lockname.len, res->lockname.name);
+		__dlm_print_one_lock_resource(res);
+	}
+	spin_unlock(&dlm->track_lock);
+
 	/* lockres is not in the hash now.  drop the flag and wake up
 	 * any processes waiting in dlm_get_lock_resource. */
 	if (!master) {