[DLM] split create_message function

This splits the current create_message() function into two parts so that
later patches can call the new lower-level _create_message() function when
they don't have an rsb struct.  No functional change in this patch.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 32 insertions, 22 deletions

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index b865a46059dd..7807958846c5 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -2301,31 +2301,14 @@ int dlm_unlock(dlm_lockspace_t *lockspace,
  * receive_lookup_reply         send_lookup_reply
  */
 
-static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
-                          int to_nodeid, int mstype,
-                          struct dlm_message **ms_ret,
-                          struct dlm_mhandle **mh_ret)
+static int _create_message(struct dlm_ls *ls, int mb_len,
+                           int to_nodeid, int mstype,
+                           struct dlm_message **ms_ret,
+                           struct dlm_mhandle **mh_ret)
 {
         struct dlm_message *ms;
         struct dlm_mhandle *mh;
         char *mb;
-        int mb_len = sizeof(struct dlm_message);
-
-        switch (mstype) {
-        case DLM_MSG_REQUEST:
-        case DLM_MSG_LOOKUP:
-        case DLM_MSG_REMOVE:
-                mb_len += r->res_length;
-                break;
-        case DLM_MSG_CONVERT:
-        case DLM_MSG_UNLOCK:
-        case DLM_MSG_REQUEST_REPLY:
-        case DLM_MSG_CONVERT_REPLY:
-        case DLM_MSG_GRANT:
-                if (lkb && lkb->lkb_lvbptr)
-                        mb_len += r->res_ls->ls_lvblen;
-                break;
-        }
 
         /* get_buffer gives us a message handle (mh) that we need to
            pass into lowcomms_commit and a message buffer (mb) that we
@@ -2340,7 +2323,7 @@ static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
         ms = (struct dlm_message *) mb;
 
         ms->m_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
-        ms->m_header.h_lockspace = r->res_ls->ls_global_id;
+        ms->m_header.h_lockspace = ls->ls_global_id;
         ms->m_header.h_nodeid = dlm_our_nodeid();
         ms->m_header.h_length = mb_len;
         ms->m_header.h_cmd = DLM_MSG;
@@ -2352,6 +2335,33 @@ static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
         return 0;
 }
 
+static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
+                          int to_nodeid, int mstype,
+                          struct dlm_message **ms_ret,
+                          struct dlm_mhandle **mh_ret)
+{
+        int mb_len = sizeof(struct dlm_message);
+
+        switch (mstype) {
+        case DLM_MSG_REQUEST:
+        case DLM_MSG_LOOKUP:
+        case DLM_MSG_REMOVE:
+                mb_len += r->res_length;
+                break;
+        case DLM_MSG_CONVERT:
+        case DLM_MSG_UNLOCK:
+        case DLM_MSG_REQUEST_REPLY:
+        case DLM_MSG_CONVERT_REPLY:
+        case DLM_MSG_GRANT:
+                if (lkb && lkb->lkb_lvbptr)
+                        mb_len += r->res_ls->ls_lvblen;
+                break;
+        }
+
+        return _create_message(r->res_ls, mb_len, to_nodeid, mstype,
+                               ms_ret, mh_ret);
+}
+
 /* further lowcomms enhancements or alternate implementations may make
    the return value from this function useful at some point */