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authorJoel Becker <joel.becker@oracle.com>2008-02-02 01:39:35 +0300
committerMark Fasheh <mfasheh@suse.com>2008-04-18 19:56:04 +0400
commit4670c46ded9a18268d1265417ff4ac72145a7917 (patch)
tree4f70822ddee389a9c8ed572b215a3355c20db3a1 /fs/ocfs2/heartbeat.c
parent8f2c9c1b16bf6ed0903b29c49d56fa0109a390e4 (diff)
downloadlinux-4670c46ded9a18268d1265417ff4ac72145a7917.tar.xz
ocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.
This step introduces a cluster stack agnostic API for initializing and exiting. fs/ocfs2/dlmglue.c no longer uses o2cb/o2dlm knowledge to connect to the stack. It is all handled in stackglue.c. heartbeat.c no longer needs to know how it gets called. ocfs2_do_node_down() is now a clean recovery trigger. The big gotcha is the ordering of initializations and de-initializations done underneath ocfs2_cluster_connect(). ocfs2_dlm_init() used to do all o2dlm initialization in one block. Thus, the o2dlm functionality of ocfs2_cluster_connect() is very straightforward. ocfs2_dlm_shutdown(), however, did a few things between de-registration of the eviction callback and actually shutting down the domain. Now de-registration and shutdown of the domain are wrapped within the single ocfs2_cluster_disconnect() call. I've checked the code paths to make sure we can safely tear down things in ocfs2_dlm_shutdown() before calling ocfs2_cluster_disconnect(). The filesystem has already set itself to ignore the callback. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/heartbeat.c')
-rw-r--r--fs/ocfs2/heartbeat.c40
1 files changed, 8 insertions, 32 deletions
diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c
index 80de2397c161..dcac1a487288 100644
--- a/fs/ocfs2/heartbeat.c
+++ b/fs/ocfs2/heartbeat.c
@@ -30,8 +30,6 @@
#include <linux/highmem.h>
#include <linux/kmod.h>
-#include <dlm/dlmapi.h>
-
#define MLOG_MASK_PREFIX ML_SUPER
#include <cluster/masklog.h>
@@ -64,19 +62,20 @@ void ocfs2_init_node_maps(struct ocfs2_super *osb)
ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
}
-static void ocfs2_do_node_down(int node_num,
- struct ocfs2_super *osb)
+void ocfs2_do_node_down(int node_num, void *data)
{
+ struct ocfs2_super *osb = data;
+
BUG_ON(osb->node_num == node_num);
mlog(0, "ocfs2: node down event for %d\n", node_num);
- if (!osb->dlm) {
+ if (!osb->cconn) {
/*
- * No DLM means we're not even ready to participate yet.
- * We check the slots after the DLM comes up, so we will
- * notice the node death then. We can safely ignore it
- * here.
+ * No cluster connection means we're not even ready to
+ * participate yet. We check the slots after the cluster
+ * comes up, so we will notice the node death then. We
+ * can safely ignore it here.
*/
return;
}
@@ -84,29 +83,6 @@ static void ocfs2_do_node_down(int node_num,
ocfs2_recovery_thread(osb, node_num);
}
-/* Called from the dlm when it's about to evict a node. We may also
- * get a heartbeat callback later. */
-static void ocfs2_dlm_eviction_cb(int node_num,
- void *data)
-{
- struct ocfs2_super *osb = (struct ocfs2_super *) data;
- struct super_block *sb = osb->sb;
-
- mlog(ML_NOTICE, "device (%u,%u): dlm has evicted node %d\n",
- MAJOR(sb->s_dev), MINOR(sb->s_dev), node_num);
-
- ocfs2_do_node_down(node_num, osb);
-}
-
-void ocfs2_setup_hb_callbacks(struct ocfs2_super *osb)
-{
- /* Not exactly a heartbeat callback, but leads to essentially
- * the same path so we set it up here. */
- dlm_setup_eviction_cb(&osb->osb_eviction_cb,
- ocfs2_dlm_eviction_cb,
- osb);
-}
-
void ocfs2_stop_heartbeat(struct ocfs2_super *osb)
{
int ret;