SUNRPC/NFSD: clean up get/put functions.

[sfrench/cifs-2.6.git] / include / linux / sunrpc / svc.h

diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 5d9568953fcd8e92624f7a4a422aec980dae70c9..73d56d33a36d9ecd3eceb54a17fd50ded2fb5812 100644 (file)
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -114,8 +114,13 @@ struct svc_serv {
 #endif /* CONFIG_SUNRPC_BACKCHANNEL */
 };
 
-/*
- * We use sv_nrthreads as a reference count.  svc_destroy() drops
+/**
+ * svc_get() - increment reference count on a SUNRPC serv
+ * @serv:  the svc_serv to have count incremented
+ *
+ * Returns: the svc_serv that was passed in.
+ *
+ * We use sv_nrthreads as a reference count.  svc_put() drops
  * this refcount, so we need to bump it up around operations that
  * change the number of threads.  Horrible, but there it is.
  * Should be called with the "service mutex" held.
@@ -126,6 +131,22 @@ static inline struct svc_serv *svc_get(struct svc_serv *serv)
        return serv;
 }
 
+void svc_destroy(struct svc_serv *serv);
+
+/**
+ * svc_put - decrement reference count on a SUNRPC serv
+ * @serv:  the svc_serv to have count decremented
+ *
+ * When the reference count reaches zero, svc_destroy()
+ * is called to clean up and free the serv.
+ */
+static inline void svc_put(struct svc_serv *serv)
+{
+       serv->sv_nrthreads -= 1;
+       if (serv->sv_nrthreads == 0)
+               svc_destroy(serv);
+}
+
 /*
  * Maximum payload size supported by a kernel RPC server.
  * This is use to determine the max number of pages nfsd is
@@ -515,7 +536,6 @@ struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
 int               svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
 int               svc_set_num_threads_sync(struct svc_serv *, struct svc_pool *, int);
 int               svc_pool_stats_open(struct svc_serv *serv, struct file *file);
-void              svc_destroy(struct svc_serv *);
 void              svc_shutdown_net(struct svc_serv *, struct net *);
 int               svc_process(struct svc_rqst *);
 int               bc_svc_process(struct svc_serv *, struct rpc_rqst *,