libceph: move and add dout()s to ceph_msg_{get,put}()

Add dout()s to ceph_msg_{get,put}().  Also move them to .c and turn
kref release callback into a static function.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>

1 files changed, 22 insertions, 9 deletions

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 1948d592aa54..8bffa5b90fef 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -3269,24 +3269,21 @@ static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip)
 /*
  * Free a generically kmalloc'd message.
  */
-void ceph_msg_kfree(struct ceph_msg *m)
+static void ceph_msg_free(struct ceph_msg *m)
 {
-        dout("msg_kfree %p\n", m);
+        dout("%s %p\n", __func__, m);
         ceph_kvfree(m->front.iov_base);
         kmem_cache_free(ceph_msg_cache, m);
 }
 
-/*
- * Drop a msg ref.  Destroy as needed.
- */
-void ceph_msg_last_put(struct kref *kref)
+static void ceph_msg_release(struct kref *kref)
 {
         struct ceph_msg *m = container_of(kref, struct ceph_msg, kref);
         LIST_HEAD(data);
         struct list_head *links;
         struct list_head *next;
 
-        dout("ceph_msg_put last one on %p\n", m);
+        dout("%s %p\n", __func__, m);
         WARN_ON(!list_empty(&m->list_head));
 
         /* drop middle, data, if any */
@@ -3308,9 +3305,25 @@ void ceph_msg_last_put(struct kref *kref)
         if (m->pool)
                 ceph_msgpool_put(m->pool, m);
         else
-                ceph_msg_kfree(m);
+                ceph_msg_free(m);
+}
+
+struct ceph_msg *ceph_msg_get(struct ceph_msg *msg)
+{
+        dout("%s %p (was %d)\n", __func__, msg,
+             atomic_read(&msg->kref.refcount));
+        kref_get(&msg->kref);
+        return msg;
+}
+EXPORT_SYMBOL(ceph_msg_get);
+
+void ceph_msg_put(struct ceph_msg *msg)
+{
+        dout("%s %p (was %d)\n", __func__, msg,
+             atomic_read(&msg->kref.refcount));
+        kref_put(&msg->kref, ceph_msg_release);
 }
-EXPORT_SYMBOL(ceph_msg_last_put);
+EXPORT_SYMBOL(ceph_msg_put);
 
 void ceph_msg_dump(struct ceph_msg *msg)
 {