diff options
Diffstat (limited to 'fs/ocfs2/cluster/nodemanager.c')
| -rw-r--r-- | fs/ocfs2/cluster/nodemanager.c | 791 |
1 files changed, 791 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c new file mode 100644 index 00000000000..cf7828f2336 --- /dev/null +++ b/fs/ocfs2/cluster/nodemanager.c @@ -0,0 +1,791 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * Copyright (C) 2004, 2005 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/sysctl.h> +#include <linux/configfs.h> + +#include "endian.h" +#include "tcp.h" +#include "nodemanager.h" +#include "heartbeat.h" +#include "masklog.h" +#include "sys.h" +#include "ver.h" + +/* for now we operate under the assertion that there can be only one + * cluster active at a time. Changing this will require trickling + * cluster references throughout where nodes are looked up */ +static struct o2nm_cluster *o2nm_single_cluster = NULL; + +#define OCFS2_MAX_HB_CTL_PATH 256 +static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl"; + +static ctl_table ocfs2_nm_table[] = { + { + .ctl_name = 1, + .procname = "hb_ctl_path", + .data = ocfs2_hb_ctl_path, + .maxlen = OCFS2_MAX_HB_CTL_PATH, + .mode = 0644, + .proc_handler = &proc_dostring, + .strategy = &sysctl_string, + }, + { .ctl_name = 0 } +}; + +static ctl_table ocfs2_mod_table[] = { + { + .ctl_name = KERN_OCFS2_NM, + .procname = "nm", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_nm_table + }, + { .ctl_name = 0} +}; + +static ctl_table ocfs2_kern_table[] = { + { + .ctl_name = KERN_OCFS2, + .procname = "ocfs2", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_mod_table + }, + { .ctl_name = 0} +}; + +static ctl_table ocfs2_root_table[] = { + { + .ctl_name = CTL_FS, + .procname = "fs", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = ocfs2_kern_table + }, + { .ctl_name = 0 } +}; + +static struct ctl_table_header *ocfs2_table_header = NULL; + +const char *o2nm_get_hb_ctl_path(void) +{ + return ocfs2_hb_ctl_path; +} +EXPORT_SYMBOL_GPL(o2nm_get_hb_ctl_path); + +struct o2nm_cluster { + struct config_group cl_group; + unsigned cl_has_local:1; + u8 cl_local_node; + rwlock_t cl_nodes_lock; + struct o2nm_node *cl_nodes[O2NM_MAX_NODES]; + struct rb_root cl_node_ip_tree; + /* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */ + unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)]; +}; + +struct o2nm_node *o2nm_get_node_by_num(u8 node_num) +{ + struct o2nm_node *node = NULL; + + if (node_num >= O2NM_MAX_NODES || o2nm_single_cluster == NULL) + goto out; + + read_lock(&o2nm_single_cluster->cl_nodes_lock); + node = o2nm_single_cluster->cl_nodes[node_num]; + if (node) + config_item_get(&node->nd_item); + read_unlock(&o2nm_single_cluster->cl_nodes_lock); +out: + return node; +} +EXPORT_SYMBOL_GPL(o2nm_get_node_by_num); + +int o2nm_configured_node_map(unsigned long *map, unsigned bytes) +{ + struct o2nm_cluster *cluster = o2nm_single_cluster; + + BUG_ON(bytes < (sizeof(cluster->cl_nodes_bitmap))); + + if (cluster == NULL) + return -EINVAL; + + read_lock(&cluster->cl_nodes_lock); + memcpy(map, cluster->cl_nodes_bitmap, sizeof(cluster->cl_nodes_bitmap)); + read_unlock(&cluster->cl_nodes_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(o2nm_configured_node_map); + +static struct o2nm_node *o2nm_node_ip_tree_lookup(struct o2nm_cluster *cluster, + __be32 ip_needle, + struct rb_node ***ret_p, + struct rb_node **ret_parent) +{ + struct rb_node **p = &cluster->cl_node_ip_tree.rb_node; + struct rb_node *parent = NULL; + struct o2nm_node *node, *ret = NULL; + + while (*p) { + parent = *p; + node = rb_entry(parent, struct o2nm_node, nd_ip_node); + + if (memcmp(&ip_needle, &node->nd_ipv4_address, + sizeof(ip_needle)) < 0) + p = &(*p)->rb_left; + else if (memcmp(&ip_needle, &node->nd_ipv4_address, + sizeof(ip_needle)) > 0) + p = &(*p)->rb_right; + else { + ret = node; + break; + } + } + + if (ret_p != NULL) + *ret_p = p; + if (ret_parent != NULL) + *ret_parent = parent; + + return ret; +} + +struct o2nm_node *o2nm_get_node_by_ip(__be32 addr) +{ + struct o2nm_node *node = NULL; + struct o2nm_cluster *cluster = o2nm_single_cluster; + + if (cluster == NULL) + goto out; + + read_lock(&cluster->cl_nodes_lock); + node = o2nm_node_ip_tree_lookup(cluster, addr, NULL, NULL); + if (node) + config_item_get(&node->nd_item); + read_unlock(&cluster->cl_nodes_lock); + +out: + return node; +} +EXPORT_SYMBOL_GPL(o2nm_get_node_by_ip); + +void o2nm_node_put(struct o2nm_node *node) +{ + config_item_put(&node->nd_item); +} +EXPORT_SYMBOL_GPL(o2nm_node_put); + +void o2nm_node_get(struct o2nm_node *node) +{ + config_item_get(&node->nd_item); +} +EXPORT_SYMBOL_GPL(o2nm_node_get); + +u8 o2nm_this_node(void) +{ + u8 node_num = O2NM_MAX_NODES; + + if (o2nm_single_cluster && o2nm_single_cluster->cl_has_local) + node_num = o2nm_single_cluster->cl_local_node; + + return node_num; +} +EXPORT_SYMBOL_GPL(o2nm_this_node); + +/* node configfs bits */ + +static struct o2nm_cluster *to_o2nm_cluster(struct config_item *item) +{ + return item ? + container_of(to_config_group(item), struct o2nm_cluster, + cl_group) + : NULL; +} + +static struct o2nm_node *to_o2nm_node(struct config_item *item) +{ + return item ? container_of(item, struct o2nm_node, nd_item) : NULL; +} + +static void o2nm_node_release(struct config_item *item) +{ + struct o2nm_node *node = to_o2nm_node(item); + kfree(node); +} + +static ssize_t o2nm_node_num_read(struct o2nm_node *node, char *page) +{ + return sprintf(page, "%d\n", node->nd_num); +} + +static struct o2nm_cluster *to_o2nm_cluster_from_node(struct o2nm_node *node) +{ + /* through the first node_set .parent + * mycluster/nodes/mynode == o2nm_cluster->o2nm_node_group->o2nm_node */ + return to_o2nm_cluster(node->nd_item.ci_parent->ci_parent); +} + +enum { + O2NM_NODE_ATTR_NUM = 0, + O2NM_NODE_ATTR_PORT, + O2NM_NODE_ATTR_ADDRESS, + O2NM_NODE_ATTR_LOCAL, +}; + +static ssize_t o2nm_node_num_write(struct o2nm_node *node, const char *page, + size_t count) +{ + struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); + unsigned long tmp; + char *p = (char *)page; + + tmp = simple_strtoul(p, &p, 0); + if (!p || (*p && (*p != '\n'))) + return -EINVAL; + + if (tmp >= O2NM_MAX_NODES) + return -ERANGE; + + /* once we're in the cl_nodes tree networking can look us up by + * node number and try to use our address and port attributes + * to connect to this node.. make sure that they've been set + * before writing the node attribute? */ + if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || + !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) + return -EINVAL; /* XXX */ + + write_lock(&cluster->cl_nodes_lock); + if (cluster->cl_nodes[tmp]) + p = NULL; + else { + cluster->cl_nodes[tmp] = node; + node->nd_num = tmp; + set_bit(tmp, cluster->cl_nodes_bitmap); + } + write_unlock(&cluster->cl_nodes_lock); + if (p == NULL) + return -EEXIST; + + return count; +} +static ssize_t o2nm_node_ipv4_port_read(struct o2nm_node *node, char *page) +{ + return sprintf(page, "%u\n", ntohs(node->nd_ipv4_port)); +} + +static ssize_t o2nm_node_ipv4_port_write(struct o2nm_node *node, + const char *page, size_t count) +{ + unsigned long tmp; + char *p = (char *)page; + + tmp = simple_strtoul(p, &p, 0); + if (!p || (*p && (*p != '\n'))) + return -EINVAL; + + if (tmp == 0) + return -EINVAL; + if (tmp >= (u16)-1) + return -ERANGE; + + node->nd_ipv4_port = htons(tmp); + + return count; +} + +static ssize_t o2nm_node_ipv4_address_read(struct o2nm_node *node, char *page) +{ + return sprintf(page, "%u.%u.%u.%u\n", NIPQUAD(node->nd_ipv4_address)); +} + +static ssize_t o2nm_node_ipv4_address_write(struct o2nm_node *node, + const char *page, + size_t count) +{ + struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); + int ret, i; + struct rb_node **p, *parent; + unsigned int octets[4]; + __be32 ipv4_addr = 0; + + ret = sscanf(page, "%3u.%3u.%3u.%3u", &octets[3], &octets[2], + &octets[1], &octets[0]); + if (ret != 4) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(octets); i++) { + if (octets[i] > 255) + return -ERANGE; + be32_add_cpu(&ipv4_addr, octets[i] << (i * 8)); + } + + ret = 0; + write_lock(&cluster->cl_nodes_lock); + if (o2nm_node_ip_tree_lookup(cluster, ipv4_addr, &p, &parent)) + ret = -EEXIST; + else { + rb_link_node(&node->nd_ip_node, parent, p); + rb_insert_color(&node->nd_ip_node, &cluster->cl_node_ip_tree); + } + write_unlock(&cluster->cl_nodes_lock); + if (ret) + return ret; + + memcpy(&node->nd_ipv4_address, &ipv4_addr, sizeof(ipv4_addr)); + + return count; +} + +static ssize_t o2nm_node_local_read(struct o2nm_node *node, char *page) +{ + return sprintf(page, "%d\n", node->nd_local); +} + +static ssize_t o2nm_node_local_write(struct o2nm_node *node, const char *page, + size_t count) +{ + struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); + unsigned long tmp; + char *p = (char *)page; + ssize_t ret; + + tmp = simple_strtoul(p, &p, 0); + if (!p || (*p && (*p != '\n'))) + return -EINVAL; + + tmp = !!tmp; /* boolean of whether this node wants to be local */ + + /* setting local turns on networking rx for now so we require having + * set everything else first */ + if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || + !test_bit(O2NM_NODE_ATTR_NUM, &node->nd_set_attributes) || + !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) + return -EINVAL; /* XXX */ + + /* the only failure case is trying to set a new local node + * when a different one is already set */ + if (tmp && tmp == cluster->cl_has_local && + cluster->cl_local_node != node->nd_num) + return -EBUSY; + + /* bring up the rx thread if we're setting the new local node. */ + if (tmp && !cluster->cl_has_local) { + ret = o2net_start_listening(node); + if (ret) + return ret; + } + + if (!tmp && cluster->cl_has_local && + cluster->cl_local_node == node->nd_num) { + o2net_stop_listening(node); + cluster->cl_local_node = O2NM_INVALID_NODE_NUM; + } + + node->nd_local = tmp; + if (node->nd_local) { + cluster->cl_has_local = tmp; + cluster->cl_local_node = node->nd_num; + } + + return count; +} + +struct o2nm_node_attribute { + struct configfs_attribute attr; + ssize_t (*show)(struct o2nm_node *, char *); + ssize_t (*store)(struct o2nm_node *, const char *, size_t); +}; + +static struct o2nm_node_attribute o2nm_node_attr_num = { + .attr = { .ca_owner = THIS_MODULE, + .ca_name = "num", + .ca_mode = S_IRUGO | S_IWUSR }, + .show = o2nm_node_num_read, + .store = o2nm_node_num_write, +}; + +static struct o2nm_node_attribute o2nm_node_attr_ipv4_port = { + .attr = { .ca_owner = THIS_MODULE, + .ca_name = "ipv4_port", + .ca_mode = S_IRUGO | S_IWUSR }, + .show = o2nm_node_ipv4_port_read, + .store = o2nm_node_ipv4_port_write, +}; + +static struct o2nm_node_attribute o2nm_node_attr_ipv4_address = { + .attr = { .ca_owner = THIS_MODULE, + .ca_name = "ipv4_address", + .ca_mode = S_IRUGO | S_IWUSR }, + .show = o2nm_node_ipv4_address_read, + .store = o2nm_node_ipv4_address_write, +}; + +static struct o2nm_node_attribute o2nm_node_attr_local = { + .attr = { .ca_owner = THIS_MODULE, + .ca_name = "local", + .ca_mode = S_IRUGO | S_IWUSR }, + .show = o2nm_node_local_read, + .store = o2nm_node_local_write, +}; + +static struct configfs_attribute *o2nm_node_attrs[] = { + [O2NM_NODE_ATTR_NUM] = &o2nm_node_attr_num.attr, + [O2NM_NODE_ATTR_PORT] = &o2nm_node_attr_ipv4_port.attr, + [O2NM_NODE_ATTR_ADDRESS] = &o2nm_node_attr_ipv4_address.attr, + [O2NM_NODE_ATTR_LOCAL] = &o2nm_node_attr_local.attr, + NULL, +}; + +static int o2nm_attr_index(struct configfs_attribute *attr) +{ + int i; + for (i = 0; i < ARRAY_SIZE(o2nm_node_attrs); i++) { + if (attr == o2nm_node_attrs[i]) + return i; + } + BUG(); + return 0; +} + +static ssize_t o2nm_node_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct o2nm_node *node = to_o2nm_node(item); + struct o2nm_node_attribute *o2nm_node_attr = + container_of(attr, struct o2nm_node_attribute, attr); + ssize_t ret = 0; + + if (o2nm_node_attr->show) + ret = o2nm_node_attr->show(node, page); + return ret; +} + +static ssize_t o2nm_node_store(struct config_item *item, + struct configfs_attribute *attr, + const char *page, size_t count) +{ + struct o2nm_node *node = to_o2nm_node(item); + struct o2nm_node_attribute *o2nm_node_attr = + container_of(attr, struct o2nm_node_attribute, attr); + ssize_t ret; + int attr_index = o2nm_attr_index(attr); + + if (o2nm_node_attr->store == NULL) { + ret = -EINVAL; + goto out; + } + + if (test_bit(attr_index, &node->nd_set_attributes)) + return -EBUSY; + + ret = o2nm_node_attr->store(node, page, count); + if (ret < count) + goto out; + + set_bit(attr_index, &node->nd_set_attributes); +out: + return ret; +} + +static struct configfs_item_operations o2nm_node_item_ops = { + .release = o2nm_node_release, + .show_attribute = o2nm_node_show, + .store_attribute = o2nm_node_store, +}; + +static struct config_item_type o2nm_node_type = { + .ct_item_ops = &o2nm_node_item_ops, + .ct_attrs = o2nm_node_attrs, + .ct_owner = THIS_MODULE, +}; + +/* node set */ + +struct o2nm_node_group { + struct config_group ns_group; + /* some stuff? */ +}; + +#if 0 +static struct o2nm_node_group *to_o2nm_node_group(struct config_group *group) +{ + return group ? + container_of(group, struct o2nm_node_group, ns_group) + : NULL; +} +#endif + +static struct config_item *o2nm_node_group_make_item(struct config_group *group, + const char *name) +{ + struct o2nm_node *node = NULL; + struct config_item *ret = NULL; + + if (strlen(name) > O2NM_MAX_NAME_LEN) + goto out; /* ENAMETOOLONG */ + + node = kcalloc(1, sizeof(struct o2nm_node), GFP_KERNEL); + if (node == NULL) + goto out; /* ENOMEM */ + + strcpy(node->nd_name, name); /* use item.ci_namebuf instead? */ + config_item_init_type_name(&node->nd_item, name, &o2nm_node_type); + spin_lock_init(&node->nd_lock); + + ret = &node->nd_item; + +out: + if (ret == NULL) + kfree(node); + + return ret; +} + +static void o2nm_node_group_drop_item(struct config_group *group, + struct config_item *item) +{ + struct o2nm_node *node = to_o2nm_node(item); + struct o2nm_cluster *cluster = to_o2nm_cluster(group->cg_item.ci_parent); + + o2net_disconnect_node(node); + + if (cluster->cl_has_local && + (cluster->cl_local_node == node->nd_num)) { + cluster->cl_has_local = 0; + cluster->cl_local_node = O2NM_INVALID_NODE_NUM; + o2net_stop_listening(node); + } + + /* XXX call into net to stop this node from trading messages */ + + write_lock(&cluster->cl_nodes_lock); + + /* XXX sloppy */ + if (node->nd_ipv4_address) + rb_erase(&node->nd_ip_node, &cluster->cl_node_ip_tree); + + /* nd_num might be 0 if the node number hasn't been set.. */ + if (cluster->cl_nodes[node->nd_num] == node) { + cluster->cl_nodes[node->nd_num] = NULL; + clear_bit(node->nd_num, cluster->cl_nodes_bitmap); + } + write_unlock(&cluster->cl_nodes_lock); + + config_item_put(item); +} + +static struct configfs_group_operations o2nm_node_group_group_ops = { + .make_item = o2nm_node_group_make_item, + .drop_item = o2nm_node_group_drop_item, +}; + +static struct config_item_type o2nm_node_group_type = { + .ct_group_ops = &o2nm_node_group_group_ops, + .ct_owner = THIS_MODULE, +}; + +/* cluster */ + +static void o2nm_cluster_release(struct config_item *item) +{ + struct o2nm_cluster *cluster = to_o2nm_cluster(item); + + kfree(cluster->cl_group.default_groups); + kfree(cluster); +} + +static struct configfs_item_operations o2nm_cluster_item_ops = { + .release = o2nm_cluster_release, +}; + +static struct config_item_type o2nm_cluster_type = { + .ct_item_ops = &o2nm_cluster_item_ops, + .ct_owner = THIS_MODULE, +}; + +/* cluster set */ + +struct o2nm_cluster_group { + struct configfs_subsystem cs_subsys; + /* some stuff? */ +}; + +#if 0 +static struct o2nm_cluster_group *to_o2nm_cluster_group(struct config_group *group) +{ + return group ? + container_of(to_configfs_subsystem(group), struct o2nm_cluster_group, cs_subsys) + : NULL; +} +#endif + +static struct config_group *o2nm_cluster_group_make_group(struct config_group *group, + const char *name) +{ + struct o2nm_cluster *cluster = NULL; + struct o2nm_node_group *ns = NULL; + struct config_group *o2hb_group = NULL, *ret = NULL; + void *defs = NULL; + + /* this runs under the parent dir's i_mutex; there can be only + * one caller in here at a time */ + if (o2nm_single_cluster) + goto out; /* ENOSPC */ + + cluster = kcalloc(1, sizeof(struct o2nm_cluster), GFP_KERNEL); + ns = kcalloc(1, sizeof(struct o2nm_node_group), GFP_KERNEL); + defs = kcalloc(3, sizeof(struct config_group *), GFP_KERNEL); + o2hb_group = o2hb_alloc_hb_set(); + if (cluster == NULL || ns == NULL || o2hb_group == NULL || defs == NULL) + goto out; + + config_group_init_type_name(&cluster->cl_group, name, + &o2nm_cluster_type); + config_group_init_type_name(&ns->ns_group, "node", + &o2nm_node_group_type); + + cluster->cl_group.default_groups = defs; + cluster->cl_group.default_groups[0] = &ns->ns_group; + cluster->cl_group.default_groups[1] = o2hb_group; + cluster->cl_group.default_groups[2] = NULL; + rwlock_init(&cluster->cl_nodes_lock); + cluster->cl_node_ip_tree = RB_ROOT; + + ret = &cluster->cl_group; + o2nm_single_cluster = cluster; + +out: + if (ret == NULL) { + kfree(cluster); + kfree(ns); + o2hb_free_hb_set(o2hb_group); + kfree(defs); + } + + return ret; +} + +static void o2nm_cluster_group_drop_item(struct config_group *group, struct config_item *item) +{ + struct o2nm_cluster *cluster = to_o2nm_cluster(item); + int i; + struct config_item *killme; + + BUG_ON(o2nm_single_cluster != cluster); + o2nm_single_cluster = NULL; + + for (i = 0; cluster->cl_group.default_groups[i]; i++) { + killme = &cluster->cl_group.default_groups[i]->cg_item; + cluster->cl_group.default_groups[i] = NULL; + config_item_put(killme); + } + + config_item_put(item); +} + +static struct configfs_group_operations o2nm_cluster_group_group_ops = { + .make_group = o2nm_cluster_group_make_group, + .drop_item = o2nm_cluster_group_drop_item, +}; + +static struct config_item_type o2nm_cluster_group_type = { + .ct_group_ops = &o2nm_cluster_group_group_ops, + .ct_owner = THIS_MODULE, +}; + +static struct o2nm_cluster_group o2nm_cluster_group = { + .cs_subsys = { + .su_group = { + .cg_item = { + .ci_namebuf = "cluster", + .ci_type = &o2nm_cluster_group_type, + }, + }, + }, +}; + +static void __exit exit_o2nm(void) +{ + if (ocfs2_table_header) + unregister_sysctl_table(ocfs2_table_header); + + /* XXX sync with hb callbacks and shut down hb? */ + o2net_unregister_hb_callbacks(); + configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); + o2cb_sys_shutdown(); + + o2net_exit(); +} + +static int __init init_o2nm(void) +{ + int ret = -1; + + cluster_print_version(); + + o2hb_init(); + o2net_init(); + + ocfs2_table_header = register_sysctl_table(ocfs2_root_table, 0); + if (!ocfs2_table_header) { + printk(KERN_ERR "nodemanager: unable to register sysctl\n"); + ret = -ENOMEM; /* or something. */ + goto out; + } + + ret = o2net_register_hb_callbacks(); + if (ret) + goto out_sysctl; + + config_group_init(&o2nm_cluster_group.cs_subsys.su_group); + init_MUTEX(&o2nm_cluster_group.cs_subsys.su_sem); + ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys); + if (ret) { + printk(KERN_ERR "nodemanager: Registration returned %d\n", ret); + goto out_callbacks; + } + + ret = o2cb_sys_init(); + if (!ret) + goto out; + + configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); +out_callbacks: + o2net_unregister_hb_callbacks(); +out_sysctl: + unregister_sysctl_table(ocfs2_table_header); +out: + return ret; +} + +MODULE_AUTHOR("Oracle"); +MODULE_LICENSE("GPL"); + +module_init(init_o2nm) +module_exit(exit_o2nm) |