ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node

This is done to differentiate between using and not using controld and
use the connection information accordingly.

We need to be backward compatible.  So, we use a new enum
ocfs2_connection_type to identify when controld is used and when it is
not.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 85852d6..1998695 100644 (file)
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -3007,7 +3007,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
                goto bail;
        }
 
-       status = ocfs2_cluster_this_node(&osb->node_num);
+       status = ocfs2_cluster_this_node(conn, &osb->node_num);
        if (status < 0) {
                mlog_errno(status);
                mlog(ML_ERROR,

diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c
index bf1f893..1724d43 100644 (file)
--- a/fs/ocfs2/stack_o2cb.c
+++ b/fs/ocfs2/stack_o2cb.c
@@ -398,7 +398,8 @@ static int o2cb_cluster_disconnect(struct ocfs2_cluster_connection *conn)
        return 0;
 }
 
-static int o2cb_cluster_this_node(unsigned int *node)
+static int o2cb_cluster_this_node(struct ocfs2_cluster_connection *conn,
+                                 unsigned int *node)
 {
        int node_num;
 

diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 0afb86d..22b95ac 100644 (file)
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -103,6 +103,11 @@
 #define OCFS2_CONTROL_MESSAGE_VERNUM_LEN       2
 #define OCFS2_CONTROL_MESSAGE_NODENUM_LEN      8
 
+enum ocfs2_connection_type {
+       WITH_CONTROLD,
+       NO_CONTROLD
+};
+
 /*
  * ocfs2_live_connection is refcounted because the filesystem and
  * miscdevice sides can detach in different order.  Let's just be safe.
@@ -110,6 +115,7 @@
 struct ocfs2_live_connection {
        struct list_head                oc_list;
        struct ocfs2_cluster_connection *oc_conn;
+       enum ocfs2_connection_type      oc_type;
        atomic_t                        oc_this_node;
        int                             oc_our_slot;
 };
@@ -840,6 +846,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
                goto out;
        }
 
+       lc->oc_type = WITH_CONTROLD;
        rc = ocfs2_live_connection_attach(conn, lc);
        if (rc)
                goto out;
@@ -886,11 +893,16 @@ static int user_cluster_disconnect(struct ocfs2_cluster_connection *conn)
        return 0;
 }
 
-static int user_cluster_this_node(unsigned int *this_node)
+static int user_cluster_this_node(struct ocfs2_cluster_connection *conn,
+                                 unsigned int *this_node)
 {
        int rc;
+       struct ocfs2_live_connection *lc = conn->cc_private;
 
-       rc = ocfs2_control_get_this_node();
+       if (lc->oc_type == WITH_CONTROLD)
+               rc = ocfs2_control_get_this_node();
+       else
+               rc = -EINVAL;
        if (rc < 0)
                return rc;
 

diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 6537979..1324e66 100644 (file)
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -465,9 +465,10 @@ void ocfs2_cluster_hangup(const char *group, int grouplen)
 }
 EXPORT_SYMBOL_GPL(ocfs2_cluster_hangup);
 
-int ocfs2_cluster_this_node(unsigned int *node)
+int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *conn,
+                           unsigned int *node)
 {
-       return active_stack->sp_ops->this_node(node);
+       return active_stack->sp_ops->this_node(conn, node);
 }
 EXPORT_SYMBOL_GPL(ocfs2_cluster_this_node);
 

diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 6d90f41..66334a3 100644 (file)
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -157,7 +157,8 @@ struct ocfs2_stack_operations {
         * ->this_node() returns the cluster's unique identifier for the
         * local node.
         */
-       int (*this_node)(unsigned int *node);
+       int (*this_node)(struct ocfs2_cluster_connection *conn,
+                        unsigned int *node);
 
        /*
         * Call the underlying dlm lock function.  The ->dlm_lock()
@@ -267,7 +268,8 @@ int ocfs2_cluster_connect_agnostic(const char *group,
 int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn,
                             int hangup_pending);
 void ocfs2_cluster_hangup(const char *group, int grouplen);
-int ocfs2_cluster_this_node(unsigned int *node);
+int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *conn,
+                           unsigned int *node);
 
 struct ocfs2_lock_res;
 int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,