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fs/ocfs2/heartbeat.c
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/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * heartbeat.c * * Register ourselves with the heartbaet service, keep our node maps * up to date, and fire off recovery when needed. * * Copyright (C) 2002, 2004 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/fs.h> #include <linux/types.h> |
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#include <linux/highmem.h> |
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#include <cluster/masklog.h> #include "ocfs2.h" #include "alloc.h" #include "heartbeat.h" #include "inode.h" #include "journal.h" |
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#include "ocfs2_trace.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, int bit); static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map, int bit); |
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/* special case -1 for now * TODO: should *really* make sure the calling func never passes -1!! */ static void ocfs2_node_map_init(struct ocfs2_node_map *map) { map->num_nodes = OCFS2_NODE_MAP_MAX_NODES; memset(map->map, 0, BITS_TO_LONGS(OCFS2_NODE_MAP_MAX_NODES) * sizeof(unsigned long)); } |
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void ocfs2_init_node_maps(struct ocfs2_super *osb) { 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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trace_ocfs2_do_node_down(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 * 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. |
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*/ return; } |
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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, int bit) { set_bit(bit, map->map); } void ocfs2_node_map_set_bit(struct ocfs2_super *osb, struct ocfs2_node_map *map, int bit) { if (bit==-1) return; BUG_ON(bit >= map->num_nodes); spin_lock(&osb->node_map_lock); __ocfs2_node_map_set_bit(map, bit); spin_unlock(&osb->node_map_lock); } static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map, int bit) { clear_bit(bit, map->map); } void ocfs2_node_map_clear_bit(struct ocfs2_super *osb, struct ocfs2_node_map *map, int bit) { if (bit==-1) return; BUG_ON(bit >= map->num_nodes); spin_lock(&osb->node_map_lock); __ocfs2_node_map_clear_bit(map, bit); spin_unlock(&osb->node_map_lock); } int ocfs2_node_map_test_bit(struct ocfs2_super *osb, struct ocfs2_node_map *map, int bit) { int ret; if (bit >= map->num_nodes) { mlog(ML_ERROR, "bit=%d map->num_nodes=%d ", bit, map->num_nodes); BUG(); } spin_lock(&osb->node_map_lock); ret = test_bit(bit, map->map); spin_unlock(&osb->node_map_lock); return ret; } |