1 files changed, 40 insertions, 18 deletions

diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index bb53714813ab..0102be35980c 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -52,16 +52,12 @@
 enum dlm_mle_type {
         DLM_MLE_BLOCK,
         DLM_MLE_MASTER,
-        DLM_MLE_MIGRATION
-};
-
-struct dlm_lock_name {
-        u8 len;
-        u8 name[DLM_LOCKID_NAME_MAX];
+        DLM_MLE_MIGRATION,
+        DLM_MLE_NUM_TYPES
 };
 
 struct dlm_master_list_entry {
-        struct list_head list;
+        struct hlist_node master_hash_node;
         struct list_head hb_events;
         struct dlm_ctxt *dlm;
         spinlock_t spinlock;
@@ -78,10 +74,10 @@ struct dlm_master_list_entry {
         enum dlm_mle_type type;
         struct o2hb_callback_func mle_hb_up;
         struct o2hb_callback_func mle_hb_down;
-        union {
-                struct dlm_lock_resource *res;
-                struct dlm_lock_name name;
-        } u;
+        struct dlm_lock_resource *mleres;
+        unsigned char mname[DLM_LOCKID_NAME_MAX];
+        unsigned int mnamelen;
+        unsigned int mnamehash;
 };
 
 enum dlm_ast_type {
@@ -151,13 +147,14 @@ struct dlm_ctxt
         unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
         struct dlm_recovery_ctxt reco;
         spinlock_t master_lock;
-        struct list_head master_list;
+        struct hlist_head **master_hash;
         struct list_head mle_hb_events;
 
         /* these give a really vague idea of the system load */
-        atomic_t local_resources;
-        atomic_t remote_resources;
-        atomic_t unknown_resources;
+        atomic_t mle_tot_count[DLM_MLE_NUM_TYPES];
+        atomic_t mle_cur_count[DLM_MLE_NUM_TYPES];
+        atomic_t res_tot_count;
+        atomic_t res_cur_count;
 
         struct dlm_debug_ctxt *dlm_debug_ctxt;
         struct dentry *dlm_debugfs_subroot;
@@ -195,6 +192,13 @@ 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
@@ -848,9 +852,7 @@ struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm,
                                               unsigned int len);
 
 int dlm_is_host_down(int errno);
-void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
-                              struct dlm_lock_resource *res,
-                              u8 owner);
+
 struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
                                                  const char *lockid,
                                                  int namelen,
@@ -1008,6 +1010,9 @@ static inline void __dlm_wait_on_lockres(struct dlm_lock_resource *res)
                                           DLM_LOCK_RES_MIGRATING));
 }
 
+void __dlm_unlink_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
+void __dlm_insert_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
+
 /* create/destroy slab caches */
 int dlm_init_master_caches(void);
 void dlm_destroy_master_caches(void);
@@ -1110,6 +1115,23 @@ static inline int dlm_node_iter_next(struct dlm_node_iter *iter)
         return bit;
 }
 
+static inline void dlm_set_lockres_owner(struct dlm_ctxt *dlm,
+                                         struct dlm_lock_resource *res,
+                                         u8 owner)
+{
+        assert_spin_locked(&res->spinlock);
+
+        res->owner = owner;
+}
 
+static inline void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
+                                            struct dlm_lock_resource *res,
+                                            u8 owner)
+{
+        assert_spin_locked(&res->spinlock);
+
+        if (owner != res->owner)
+                dlm_set_lockres_owner(dlm, res, owner);
+}
 
 #endif /* DLMCOMMON_H */