diff options
| -rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 64 | ||||
| -rw-r--r-- | fs/ocfs2/cluster/heartbeat.h | 6 | ||||
| -rw-r--r-- | fs/ocfs2/cluster/nodemanager.c | 10 | ||||
| -rw-r--r-- | fs/ocfs2/cluster/nodemanager.h | 3 | ||||
| -rw-r--r-- | fs/ocfs2/cluster/tcp.c | 8 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmdomain.c | 8 | ||||
| -rw-r--r-- | fs/ocfs2/heartbeat.c | 10 |
7 files changed, 92 insertions, 17 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 9791134..e331f4c 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -1665,7 +1665,56 @@ void o2hb_setup_callback(struct o2hb_callback_func *hc, } EXPORT_SYMBOL_GPL(o2hb_setup_callback); -int o2hb_register_callback(struct o2hb_callback_func *hc) +static struct o2hb_region *o2hb_find_region(const char *region_uuid) +{ + struct o2hb_region *p, *reg = NULL; + + assert_spin_locked(&o2hb_live_lock); + + list_for_each_entry(p, &o2hb_all_regions, hr_all_item) { + if (!strcmp(region_uuid, config_item_name(&p->hr_item))) { + reg = p; + break; + } + } + + return reg; +} + +static int o2hb_region_get(const char *region_uuid) +{ + int ret = 0; + struct o2hb_region *reg; + + spin_lock(&o2hb_live_lock); + + reg = o2hb_find_region(region_uuid); + if (!reg) + ret = -ENOENT; + spin_unlock(&o2hb_live_lock); + + if (!ret) + ret = o2nm_depend_item(®->hr_item); + + return ret; +} + +static void o2hb_region_put(const char *region_uuid) +{ + struct o2hb_region *reg; + + spin_lock(&o2hb_live_lock); + + reg = o2hb_find_region(region_uuid); + + spin_unlock(&o2hb_live_lock); + + if (reg) + o2nm_undepend_item(®->hr_item); +} + +int o2hb_register_callback(const char *region_uuid, + struct o2hb_callback_func *hc) { struct o2hb_callback_func *tmp; struct list_head *iter; @@ -1681,6 +1730,12 @@ int o2hb_register_callback(struct o2hb_callback_func *hc) goto out; } + if (region_uuid) { + ret = o2hb_region_get(region_uuid); + if (ret) + goto out; + } + down_write(&o2hb_callback_sem); list_for_each(iter, &hbcall->list) { @@ -1702,16 +1757,21 @@ out: } EXPORT_SYMBOL_GPL(o2hb_register_callback); -void o2hb_unregister_callback(struct o2hb_callback_func *hc) +void o2hb_unregister_callback(const char *region_uuid, + struct o2hb_callback_func *hc) { BUG_ON(hc->hc_magic != O2HB_CB_MAGIC); mlog(ML_HEARTBEAT, "on behalf of %p for funcs %p\n", __builtin_return_address(0), hc); + /* XXX Can this happen _with_ a region reference? */ if (list_empty(&hc->hc_item)) return; + if (region_uuid) + o2hb_region_put(region_uuid); + down_write(&o2hb_callback_sem); list_del_init(&hc->hc_item); diff --git a/fs/ocfs2/cluster/heartbeat.h b/fs/ocfs2/cluster/heartbeat.h index cc6d40b..35397dd 100644 --- a/fs/ocfs2/cluster/heartbeat.h +++ b/fs/ocfs2/cluster/heartbeat.h @@ -69,8 +69,10 @@ void o2hb_setup_callback(struct o2hb_callback_func *hc, o2hb_cb_func *func, void *data, int priority); -int o2hb_register_callback(struct o2hb_callback_func *hc); -void o2hb_unregister_callback(struct o2hb_callback_func *hc); +int o2hb_register_callback(const char *region_uuid, + struct o2hb_callback_func *hc); +void o2hb_unregister_callback(const char *region_uuid, + struct o2hb_callback_func *hc); void o2hb_fill_node_map(unsigned long *map, unsigned bytes); void o2hb_init(void); diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c index 48b77d1..eab46d8 100644 --- a/fs/ocfs2/cluster/nodemanager.c +++ b/fs/ocfs2/cluster/nodemanager.c @@ -900,6 +900,16 @@ static struct o2nm_cluster_group o2nm_cluster_group = { }, }; +int o2nm_depend_item(struct config_item *item) +{ + return configfs_depend_item(&o2nm_cluster_group.cs_subsys, item); +} + +void o2nm_undepend_item(struct config_item *item) +{ + configfs_undepend_item(&o2nm_cluster_group.cs_subsys, item); +} + 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 0705221..55ae1a0 100644 --- a/fs/ocfs2/cluster/nodemanager.h +++ b/fs/ocfs2/cluster/nodemanager.h @@ -77,4 +77,7 @@ struct o2nm_node *o2nm_get_node_by_ip(__be32 addr); void o2nm_node_get(struct o2nm_node *node); void o2nm_node_put(struct o2nm_node *node); +int o2nm_depend_item(struct config_item *item); +void o2nm_undepend_item(struct config_item *item); + #endif /* O2CLUSTER_NODEMANAGER_H */ diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 0b229a9..d58c7dd 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1638,8 +1638,8 @@ static void o2net_hb_node_up_cb(struct o2nm_node *node, int node_num, void o2net_unregister_hb_callbacks(void) { - o2hb_unregister_callback(&o2net_hb_up); - o2hb_unregister_callback(&o2net_hb_down); + o2hb_unregister_callback(NULL, &o2net_hb_up); + o2hb_unregister_callback(NULL, &o2net_hb_down); } int o2net_register_hb_callbacks(void) @@ -1651,9 +1651,9 @@ int o2net_register_hb_callbacks(void) o2hb_setup_callback(&o2net_hb_up, O2HB_NODE_UP_CB, o2net_hb_node_up_cb, NULL, O2NET_HB_PRI); - ret = o2hb_register_callback(&o2net_hb_up); + ret = o2hb_register_callback(NULL, &o2net_hb_up); if (ret == 0) - ret = o2hb_register_callback(&o2net_hb_down); + ret = o2hb_register_callback(NULL, &o2net_hb_down); if (ret) o2net_unregister_hb_callbacks(); diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index d836b98..6954565 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -1128,8 +1128,8 @@ bail: static void dlm_unregister_domain_handlers(struct dlm_ctxt *dlm) { - o2hb_unregister_callback(&dlm->dlm_hb_up); - o2hb_unregister_callback(&dlm->dlm_hb_down); + o2hb_unregister_callback(NULL, &dlm->dlm_hb_up); + o2hb_unregister_callback(NULL, &dlm->dlm_hb_down); o2net_unregister_handler_list(&dlm->dlm_domain_handlers); } @@ -1141,13 +1141,13 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm) o2hb_setup_callback(&dlm->dlm_hb_down, O2HB_NODE_DOWN_CB, dlm_hb_node_down_cb, dlm, DLM_HB_NODE_DOWN_PRI); - status = o2hb_register_callback(&dlm->dlm_hb_down); + status = o2hb_register_callback(NULL, &dlm->dlm_hb_down); if (status) goto bail; o2hb_setup_callback(&dlm->dlm_hb_up, O2HB_NODE_UP_CB, dlm_hb_node_up_cb, dlm, DLM_HB_NODE_UP_PRI); - status = o2hb_register_callback(&dlm->dlm_hb_up); + status = o2hb_register_callback(NULL, &dlm->dlm_hb_up); if (status) goto bail; diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c index b25ef63..352eb4a 100644 --- a/fs/ocfs2/heartbeat.c +++ b/fs/ocfs2/heartbeat.c @@ -157,16 +157,16 @@ int ocfs2_register_hb_callbacks(struct ocfs2_super *osb) if (ocfs2_mount_local(osb)) return 0; - status = o2hb_register_callback(&osb->osb_hb_down); + status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_down); if (status < 0) { mlog_errno(status); goto bail; } - status = o2hb_register_callback(&osb->osb_hb_up); + status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_up); if (status < 0) { mlog_errno(status); - o2hb_unregister_callback(&osb->osb_hb_down); + o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down); } bail: @@ -178,8 +178,8 @@ void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb) if (ocfs2_mount_local(osb)) return; - o2hb_unregister_callback(&osb->osb_hb_down); - o2hb_unregister_callback(&osb->osb_hb_up); + o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down); + o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_up); } void ocfs2_stop_heartbeat(struct ocfs2_super *osb) |
