forked from luck/tmp_suning_uos_patched
6953b4c008
The last bit of classic stack used directly in ocfs2 code is o2hb. Specifically, the check for heartbeat during mount and the call to ocfs2_hb_ctl during unmount. We create an extra API, ocfs2_cluster_hangup(), to encapsulate the call to ocfs2_hb_ctl. Other stacks will just leave hangup() empty. The check for heartbeat is moved into ocfs2_cluster_connect(). It will be matched by a similar check for other stacks. With this change, only stackglue.c includes cluster/ headers. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* heartbeat.c
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*
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* Register ourselves with the heartbaet service, keep our node maps
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* up to date, and fire off recovery when needed.
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#define MLOG_MASK_PREFIX ML_SUPER
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#include <cluster/masklog.h>
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#include "ocfs2.h"
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#include "alloc.h"
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#include "heartbeat.h"
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#include "inode.h"
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#include "journal.h"
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#include "buffer_head_io.h"
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static inline void __ocfs2_node_map_set_bit(struct ocfs2_node_map *map,
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int bit);
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static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map,
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int bit);
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/* special case -1 for now
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* TODO: should *really* make sure the calling func never passes -1!! */
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static void ocfs2_node_map_init(struct ocfs2_node_map *map)
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{
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map->num_nodes = OCFS2_NODE_MAP_MAX_NODES;
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memset(map->map, 0, BITS_TO_LONGS(OCFS2_NODE_MAP_MAX_NODES) *
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sizeof(unsigned long));
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}
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void ocfs2_init_node_maps(struct ocfs2_super *osb)
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{
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spin_lock_init(&osb->node_map_lock);
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ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
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}
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void ocfs2_do_node_down(int node_num, void *data)
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{
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struct ocfs2_super *osb = data;
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BUG_ON(osb->node_num == node_num);
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mlog(0, "ocfs2: node down event for %d\n", node_num);
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if (!osb->cconn) {
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/*
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* No cluster connection means we're not even ready to
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* participate yet. We check the slots after the cluster
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* comes up, so we will notice the node death then. We
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* can safely ignore it here.
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*/
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return;
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}
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ocfs2_recovery_thread(osb, node_num);
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}
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static inline void __ocfs2_node_map_set_bit(struct ocfs2_node_map *map,
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int bit)
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{
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set_bit(bit, map->map);
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}
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void ocfs2_node_map_set_bit(struct ocfs2_super *osb,
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struct ocfs2_node_map *map,
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int bit)
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{
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if (bit==-1)
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return;
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BUG_ON(bit >= map->num_nodes);
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spin_lock(&osb->node_map_lock);
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__ocfs2_node_map_set_bit(map, bit);
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spin_unlock(&osb->node_map_lock);
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}
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static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map,
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int bit)
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{
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clear_bit(bit, map->map);
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}
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void ocfs2_node_map_clear_bit(struct ocfs2_super *osb,
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struct ocfs2_node_map *map,
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int bit)
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{
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if (bit==-1)
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return;
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BUG_ON(bit >= map->num_nodes);
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spin_lock(&osb->node_map_lock);
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__ocfs2_node_map_clear_bit(map, bit);
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spin_unlock(&osb->node_map_lock);
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}
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int ocfs2_node_map_test_bit(struct ocfs2_super *osb,
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struct ocfs2_node_map *map,
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int bit)
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{
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int ret;
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if (bit >= map->num_nodes) {
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mlog(ML_ERROR, "bit=%d map->num_nodes=%d\n", bit, map->num_nodes);
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BUG();
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}
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spin_lock(&osb->node_map_lock);
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ret = test_bit(bit, map->map);
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spin_unlock(&osb->node_map_lock);
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return ret;
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}
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