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Commit e2b66ddc authored by Sunil Mushran's avatar Sunil Mushran Committed by Mark Fasheh
Browse files

ocfs2/dlm: Create and destroy the dlm->master_hash 



This patch adds code to create and destroy the dlm->master_hash.

Signed-off-by: default avatarSunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent c2cd4a44

fs/ocfs2/dlm/dlmcommon.h

+8 −0
Original line number Diff line number Diff line
@@ -151,6 +151,7 @@ struct dlm_ctxt 
	unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];

	struct dlm_recovery_ctxt reco;

	spinlock_t master_lock;

	struct hlist_head **master_hash;

	struct list_head master_list;

	struct list_head mle_hb_events;
@@ -195,6 +196,13 @@ static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned 
	return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);

}



static inline struct hlist_head *dlm_master_hash(struct dlm_ctxt *dlm,

						 unsigned i)

{

	return dlm->master_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] +

			(i % DLM_BUCKETS_PER_PAGE);

}



/* these keventd work queue items are for less-frequently

 * called functions that cannot be directly called from the

 * net message handlers for some reason, usually because

fs/ocfs2/dlm/dlmdomain.c

+18 −0
Original line number Diff line number Diff line
@@ -304,6 +304,9 @@ static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm) 
	if (dlm->lockres_hash)

		dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);



	if (dlm->master_hash)

		dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);



	if (dlm->name)

		kfree(dlm->name);
@@ -1534,12 +1537,27 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain, 
	for (i = 0; i < DLM_HASH_BUCKETS; i++)

		INIT_HLIST_HEAD(dlm_lockres_hash(dlm, i));



	dlm->master_hash = (struct hlist_head **)

				dlm_alloc_pagevec(DLM_HASH_PAGES);

	if (!dlm->master_hash) {

		mlog_errno(-ENOMEM);

		dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);

		kfree(dlm->name);

		kfree(dlm);

		dlm = NULL;

		goto leave;

	}



	for (i = 0; i < DLM_HASH_BUCKETS; i++)

		INIT_HLIST_HEAD(dlm_master_hash(dlm, i));



	strcpy(dlm->name, domain);

	dlm->key = key;

	dlm->node_num = o2nm_this_node();



	ret = dlm_create_debugfs_subroot(dlm);

	if (ret < 0) {

		dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);

		dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);

		kfree(dlm->name);

		kfree(dlm);