ocfs2/dlm: Create and destroy the dlm->master_hash
This patch adds code to create and destroy the dlm->master_hash. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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@ -151,6 +151,7 @@ struct dlm_ctxt
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unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
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struct dlm_recovery_ctxt reco;
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spinlock_t master_lock;
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struct hlist_head **master_hash;
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struct list_head master_list;
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struct list_head mle_hb_events;
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@ -195,6 +196,13 @@ static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned
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return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);
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}
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static inline struct hlist_head *dlm_master_hash(struct dlm_ctxt *dlm,
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unsigned i)
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{
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return dlm->master_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] +
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(i % DLM_BUCKETS_PER_PAGE);
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}
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/* these keventd work queue items are for less-frequently
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* called functions that cannot be directly called from the
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* net message handlers for some reason, usually because
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@ -304,6 +304,9 @@ static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm)
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if (dlm->lockres_hash)
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dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
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if (dlm->master_hash)
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dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);
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if (dlm->name)
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kfree(dlm->name);
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@ -1534,12 +1537,27 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
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for (i = 0; i < DLM_HASH_BUCKETS; i++)
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INIT_HLIST_HEAD(dlm_lockres_hash(dlm, i));
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dlm->master_hash = (struct hlist_head **)
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dlm_alloc_pagevec(DLM_HASH_PAGES);
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if (!dlm->master_hash) {
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mlog_errno(-ENOMEM);
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dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
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kfree(dlm->name);
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kfree(dlm);
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dlm = NULL;
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goto leave;
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}
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for (i = 0; i < DLM_HASH_BUCKETS; i++)
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INIT_HLIST_HEAD(dlm_master_hash(dlm, i));
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strcpy(dlm->name, domain);
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dlm->key = key;
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dlm->node_num = o2nm_this_node();
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ret = dlm_create_debugfs_subroot(dlm);
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if (ret < 0) {
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dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);
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dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
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kfree(dlm->name);
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kfree(dlm);
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