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authorJoel Becker <joel.becker@oracle.com>2007-06-19 11:34:03 -0700
committerMark Fasheh <mark.fasheh@oracle.com>2007-07-10 17:19:43 -0700
commit16c6a4f24de2933b26477ad5dfb71f518220d641 (patch)
treedd6e1efd95d00f84a7132b8ada3314bcea730d68 /fs/ocfs2/cluster
parent14829422be6d6b6721f61b1e749acf5a9cb664d8 (diff)
downloadop-kernel-dev-16c6a4f24de2933b26477ad5dfb71f518220d641.zip
op-kernel-dev-16c6a4f24de2933b26477ad5dfb71f518220d641.tar.gz
ocfs2: live heartbeat depends on the local node configuration
Removing the local node configuration out from underneath a running heartbeat is "bad". Provide an API in the ocfs2 nodemanager to request a configfs dependancy on the local node, then use it in heartbeat. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/cluster')
-rw-r--r--fs/ocfs2/cluster/heartbeat.c17
-rw-r--r--fs/ocfs2/cluster/nodemanager.c30
-rw-r--r--fs/ocfs2/cluster/nodemanager.h2
3 files changed, 46 insertions, 3 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index e331f4c..2877d46 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1693,9 +1693,18 @@ static int o2hb_region_get(const char *region_uuid)
ret = -ENOENT;
spin_unlock(&o2hb_live_lock);
- if (!ret)
- ret = o2nm_depend_item(&reg->hr_item);
+ if (ret)
+ goto out;
+
+ ret = o2nm_depend_this_node();
+ if (ret)
+ goto out;
+ ret = o2nm_depend_item(&reg->hr_item);
+ if (ret)
+ o2nm_undepend_this_node();
+
+out:
return ret;
}
@@ -1709,8 +1718,10 @@ static void o2hb_region_put(const char *region_uuid)
spin_unlock(&o2hb_live_lock);
- if (reg)
+ if (reg) {
o2nm_undepend_item(&reg->hr_item);
+ o2nm_undepend_this_node();
+ }
}
int o2hb_register_callback(const char *region_uuid,
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index eab46d8..af2070d 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -910,6 +910,36 @@ void o2nm_undepend_item(struct config_item *item)
configfs_undepend_item(&o2nm_cluster_group.cs_subsys, item);
}
+int o2nm_depend_this_node(void)
+{
+ int ret = 0;
+ struct o2nm_node *local_node;
+
+ local_node = o2nm_get_node_by_num(o2nm_this_node());
+ if (!local_node) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = o2nm_depend_item(&local_node->nd_item);
+ o2nm_node_put(local_node);
+
+out:
+ return ret;
+}
+
+void o2nm_undepend_this_node(void)
+{
+ struct o2nm_node *local_node;
+
+ local_node = o2nm_get_node_by_num(o2nm_this_node());
+ BUG_ON(!local_node);
+
+ o2nm_undepend_item(&local_node->nd_item);
+ o2nm_node_put(local_node);
+}
+
+
static void __exit exit_o2nm(void)
{
if (ocfs2_table_header)
diff --git a/fs/ocfs2/cluster/nodemanager.h b/fs/ocfs2/cluster/nodemanager.h
index 55ae1a0..7c86036 100644
--- a/fs/ocfs2/cluster/nodemanager.h
+++ b/fs/ocfs2/cluster/nodemanager.h
@@ -79,5 +79,7 @@ void o2nm_node_put(struct o2nm_node *node);
int o2nm_depend_item(struct config_item *item);
void o2nm_undepend_item(struct config_item *item);
+int o2nm_depend_this_node(void);
+void o2nm_undepend_this_node(void);
#endif /* O2CLUSTER_NODEMANAGER_H */
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