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LU-3963 ldlm: convert to linux list api
[fs/lustre-release.git] / lustre / ldlm / ldlm_lockd.c
index fb7fc3b..9562229 100644 (file)
@@ -100,13 +100,13 @@ struct ldlm_bl_pool {
         * as a priority. It is used for LDLM_FL_DISCARD_DATA requests.
         * see bug 13843
         */
-       cfs_list_t              blp_prio_list;
+       struct list_head              blp_prio_list;
 
        /*
         * blp_list is used for all other callbacks which are likely
         * to take longer to process.
         */
-       cfs_list_t              blp_list;
+       struct list_head              blp_list;
 
        wait_queue_head_t       blp_waitq;
        struct completion       blp_comp;
@@ -117,11 +117,11 @@ struct ldlm_bl_pool {
 };
 
 struct ldlm_bl_work_item {
-        cfs_list_t              blwi_entry;
+       struct list_head              blwi_entry;
         struct ldlm_namespace  *blwi_ns;
         struct ldlm_lock_desc   blwi_ld;
         struct ldlm_lock       *blwi_lock;
-        cfs_list_t              blwi_head;
+       struct list_head              blwi_head;
         int                     blwi_count;
        struct completion        blwi_comp;
        ldlm_cancel_flags_t     blwi_flags;
@@ -146,14 +146,14 @@ static spinlock_t waiting_locks_spinlock;   /* BH lock (timer) */
  *
  * All access to it should be under waiting_locks_spinlock.
  */
-static cfs_list_t waiting_locks_list;
+static struct list_head waiting_locks_list;
 static struct timer_list waiting_locks_timer;
 
 static struct expired_lock_thread {
        wait_queue_head_t       elt_waitq;
        int                     elt_state;
        int                     elt_dump;
-       cfs_list_t              elt_expired_locks;
+       struct list_head                elt_expired_locks;
 } expired_lock_thread;
 
 static inline int have_expired_locks(void)
@@ -162,7 +162,7 @@ static inline int have_expired_locks(void)
 
        ENTRY;
        spin_lock_bh(&waiting_locks_spinlock);
-       need_to_run = !cfs_list_empty(&expired_lock_thread.elt_expired_locks);
+       need_to_run = !list_empty(&expired_lock_thread.elt_expired_locks);
        spin_unlock_bh(&waiting_locks_spinlock);
 
        RETURN(need_to_run);
@@ -173,7 +173,7 @@ static inline int have_expired_locks(void)
  */
 static int expired_lock_main(void *arg)
 {
-       cfs_list_t *expired = &expired_lock_thread.elt_expired_locks;
+       struct list_head *expired = &expired_lock_thread.elt_expired_locks;
        struct l_wait_info lwi = { 0 };
        int do_dump;
 
@@ -206,11 +206,11 @@ static int expired_lock_main(void *arg)
 
                do_dump = 0;
 
-               while (!cfs_list_empty(expired)) {
+               while (!list_empty(expired)) {
                        struct obd_export *export;
                        struct ldlm_lock *lock;
 
-                       lock = cfs_list_entry(expired->next, struct ldlm_lock,
+                       lock = list_entry(expired->next, struct ldlm_lock,
                                          l_pending_chain);
                        if ((void *)lock < LP_POISON + PAGE_CACHE_SIZE &&
                            (void *)lock >= LP_POISON) {
@@ -218,7 +218,7 @@ static int expired_lock_main(void *arg)
                                CERROR("free lock on elt list %p\n", lock);
                                LBUG();
                        }
-                       cfs_list_del_init(&lock->l_pending_chain);
+                       list_del_init(&lock->l_pending_chain);
                        if ((void *)lock->l_export <
                             LP_POISON + PAGE_CACHE_SIZE &&
                            (void *)lock->l_export >= LP_POISON) {
@@ -285,7 +285,7 @@ static int ldlm_lock_busy(struct ldlm_lock *lock)
                return 0;
 
        spin_lock_bh(&lock->l_export->exp_rpc_lock);
-       cfs_list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
+       list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
                                rq_exp_list) {
                if (req->rq_ops->hpreq_lock_match) {
                        match = req->rq_ops->hpreq_lock_match(req, lock);
@@ -304,8 +304,8 @@ static void waiting_locks_callback(unsigned long unused)
        int                     need_dump = 0;
 
        spin_lock_bh(&waiting_locks_spinlock);
-        while (!cfs_list_empty(&waiting_locks_list)) {
-                lock = cfs_list_entry(waiting_locks_list.next, struct ldlm_lock,
+       while (!list_empty(&waiting_locks_list)) {
+               lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
                                       l_pending_chain);
                 if (cfs_time_after(lock->l_callback_timeout,
                                    cfs_time_current()) ||
@@ -346,13 +346,13 @@ static void waiting_locks_callback(unsigned long unused)
                 /* no needs to take an extra ref on the lock since it was in
                  * the waiting_locks_list and ldlm_add_waiting_lock()
                  * already grabbed a ref */
-                cfs_list_del(&lock->l_pending_chain);
-                cfs_list_add(&lock->l_pending_chain,
+               list_del(&lock->l_pending_chain);
+               list_add(&lock->l_pending_chain,
                              &expired_lock_thread.elt_expired_locks);
                need_dump = 1;
        }
 
-       if (!cfs_list_empty(&expired_lock_thread.elt_expired_locks)) {
+       if (!list_empty(&expired_lock_thread.elt_expired_locks)) {
                if (obd_dump_on_timeout && need_dump)
                        expired_lock_thread.elt_dump = __LINE__;
 
@@ -363,9 +363,9 @@ static void waiting_locks_callback(unsigned long unused)
          * Make sure the timer will fire again if we have any locks
          * left.
          */
-        if (!cfs_list_empty(&waiting_locks_list)) {
+       if (!list_empty(&waiting_locks_list)) {
                 cfs_time_t timeout_rounded;
-                lock = cfs_list_entry(waiting_locks_list.next, struct ldlm_lock,
+               lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
                                       l_pending_chain);
                 timeout_rounded = (cfs_time_t)round_timeout(lock->l_callback_timeout);
                 cfs_timer_arm(&waiting_locks_timer, timeout_rounded);
@@ -390,7 +390,7 @@ static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, int seconds)
         cfs_time_t timeout;
         cfs_time_t timeout_rounded;
 
-        if (!cfs_list_empty(&lock->l_pending_chain))
+       if (!list_empty(&lock->l_pending_chain))
                 return 0;
 
         if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT) ||
@@ -411,7 +411,7 @@ static int __ldlm_add_waiting_lock(struct ldlm_lock *lock, int seconds)
         /* if the new lock has a shorter timeout than something earlier on
            the list, we'll wait the longer amount of time; no big deal. */
         /* FIFO */
-        cfs_list_add_tail(&lock->l_pending_chain, &waiting_locks_list);
+       list_add_tail(&lock->l_pending_chain, &waiting_locks_list);
         return 1;
 }
 
@@ -448,8 +448,8 @@ static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
 
        if (ret) {
                spin_lock_bh(&lock->l_export->exp_bl_list_lock);
-               if (cfs_list_empty(&lock->l_exp_list))
-                       cfs_list_add(&lock->l_exp_list,
+               if (list_empty(&lock->l_exp_list))
+                       list_add(&lock->l_exp_list,
                                     &lock->l_export->exp_bl_list);
                spin_unlock_bh(&lock->l_export->exp_bl_list_lock);
        }
@@ -471,9 +471,9 @@ static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
  */
 static int __ldlm_del_waiting_lock(struct ldlm_lock *lock)
 {
-        cfs_list_t *list_next;
+       struct list_head *list_next;
 
-        if (cfs_list_empty(&lock->l_pending_chain))
+       if (list_empty(&lock->l_pending_chain))
                 return 0;
 
         list_next = lock->l_pending_chain.next;
@@ -484,13 +484,13 @@ static int __ldlm_del_waiting_lock(struct ldlm_lock *lock)
                         cfs_timer_disarm(&waiting_locks_timer);
                 } else {
                         struct ldlm_lock *next;
-                        next = cfs_list_entry(list_next, struct ldlm_lock,
+                       next = list_entry(list_next, struct ldlm_lock,
                                               l_pending_chain);
                         cfs_timer_arm(&waiting_locks_timer,
                                       round_timeout(next->l_callback_timeout));
                 }
         }
-        cfs_list_del_init(&lock->l_pending_chain);
+       list_del_init(&lock->l_pending_chain);
 
         return 1;
 }
@@ -511,7 +511,7 @@ int ldlm_del_waiting_lock(struct ldlm_lock *lock)
 
        /* remove the lock out of export blocking list */
        spin_lock_bh(&lock->l_export->exp_bl_list_lock);
-       cfs_list_del_init(&lock->l_exp_list);
+       list_del_init(&lock->l_exp_list);
        spin_unlock_bh(&lock->l_export->exp_bl_list_lock);
 
         if (ret) {
@@ -540,7 +540,7 @@ int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout)
 
        spin_lock_bh(&waiting_locks_spinlock);
 
-       if (cfs_list_empty(&lock->l_pending_chain)) {
+       if (list_empty(&lock->l_pending_chain)) {
                spin_unlock_bh(&waiting_locks_spinlock);
                LDLM_DEBUG(lock, "wasn't waiting");
                return 0;
@@ -600,7 +600,7 @@ static void ldlm_failed_ast(struct ldlm_lock *lock, int rc,
                /* the lock was not in any list, grab an extra ref before adding
                 * the lock to the expired list */
                LDLM_LOCK_GET(lock);
-       cfs_list_add(&lock->l_pending_chain,
+       list_add(&lock->l_pending_chain,
                     &expired_lock_thread.elt_expired_locks);
        wake_up(&expired_lock_thread.elt_waitq);
        spin_unlock_bh(&waiting_locks_spinlock);
@@ -758,8 +758,8 @@ static void ldlm_lock_reorder_req(struct ldlm_lock *lock)
        }
 
        spin_lock_bh(&lock->l_export->exp_rpc_lock);
-       cfs_list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
-                               rq_exp_list) {
+       list_for_each_entry(req, &lock->l_export->exp_hp_rpcs,
+                           rq_exp_list) {
                /* Do not process requests that were not yet added to there
                 * incoming queue or were already removed from there for
                 * processing. We evaluate ptlrpc_nrs_req_can_move() without
@@ -1094,7 +1094,8 @@ int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data)
 }
 EXPORT_SYMBOL(ldlm_server_glimpse_ast);
 
-int ldlm_glimpse_locks(struct ldlm_resource *res, cfs_list_t *gl_work_list)
+int ldlm_glimpse_locks(struct ldlm_resource *res,
+                      struct list_head *gl_work_list)
 {
        int     rc;
        ENTRY;
@@ -1733,13 +1734,14 @@ static void ldlm_handle_cp_callback(struct ptlrpc_request *req,
                                     struct ldlm_request *dlm_req,
                                     struct ldlm_lock *lock)
 {
+       struct list_head ast_list;
        int lvb_len;
-       CFS_LIST_HEAD(ast_list);
        int rc = 0;
        ENTRY;
 
        LDLM_DEBUG(lock, "client completion callback handler START");
 
+       INIT_LIST_HEAD(&ast_list);
        if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_BL_CB_RACE)) {
                int to = cfs_time_seconds(1);
                while (to > 0) {
@@ -1938,10 +1940,10 @@ static int __ldlm_bl_to_thread(struct ldlm_bl_work_item *blwi,
        if (blwi->blwi_lock &&
            ldlm_is_discard_data(blwi->blwi_lock)) {
                /* add LDLM_FL_DISCARD_DATA requests to the priority list */
-               cfs_list_add_tail(&blwi->blwi_entry, &blp->blp_prio_list);
+               list_add_tail(&blwi->blwi_entry, &blp->blp_prio_list);
        } else {
                /* other blocking callbacks are added to the regular list */
-               cfs_list_add_tail(&blwi->blwi_entry, &blp->blp_list);
+               list_add_tail(&blwi->blwi_entry, &blp->blp_list);
        }
        spin_unlock(&blp->blp_lock);
 
@@ -1958,12 +1960,12 @@ static int __ldlm_bl_to_thread(struct ldlm_bl_work_item *blwi,
 static inline void init_blwi(struct ldlm_bl_work_item *blwi,
                             struct ldlm_namespace *ns,
                             struct ldlm_lock_desc *ld,
-                            cfs_list_t *cancels, int count,
+                            struct list_head *cancels, int count,
                             struct ldlm_lock *lock,
                             ldlm_cancel_flags_t cancel_flags)
 {
        init_completion(&blwi->blwi_comp);
-        CFS_INIT_LIST_HEAD(&blwi->blwi_head);
+       INIT_LIST_HEAD(&blwi->blwi_head);
 
        if (memory_pressure_get())
                 blwi->blwi_mem_pressure = 1;
@@ -1973,8 +1975,8 @@ static inline void init_blwi(struct ldlm_bl_work_item *blwi,
         if (ld != NULL)
                 blwi->blwi_ld = *ld;
         if (count) {
-                cfs_list_add(&blwi->blwi_head, cancels);
-                cfs_list_del_init(cancels);
+               list_add(&blwi->blwi_head, cancels);
+               list_del_init(cancels);
                 blwi->blwi_count = count;
         } else {
                 blwi->blwi_lock = lock;
@@ -1993,7 +1995,7 @@ static inline void init_blwi(struct ldlm_bl_work_item *blwi,
 static int ldlm_bl_to_thread(struct ldlm_namespace *ns,
                             struct ldlm_lock_desc *ld,
                             struct ldlm_lock *lock,
-                            cfs_list_t *cancels, int count,
+                            struct list_head *cancels, int count,
                             ldlm_cancel_flags_t cancel_flags)
 {
        ENTRY;
@@ -2035,7 +2037,7 @@ int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
 }
 
 int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
-                          cfs_list_t *cancels, int count,
+                          struct list_head *cancels, int count,
                           ldlm_cancel_flags_t cancel_flags)
 {
 #ifdef __KERNEL__
@@ -2463,10 +2465,10 @@ static int ldlm_hpreq_handler(struct ptlrpc_request *req)
 }
 
 int ldlm_revoke_lock_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
-                        cfs_hlist_node_t *hnode, void *data)
+                       struct hlist_node *hnode, void *data)
 
 {
-        cfs_list_t         *rpc_list = data;
+       struct list_head         *rpc_list = data;
         struct ldlm_lock   *lock = cfs_hash_object(hs, hnode);
 
         lock_res_and_lock(lock);
@@ -2502,7 +2504,7 @@ int ldlm_revoke_lock_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
                             &lock->l_remote_handle, &lock->l_exp_hash);
        }
 
-        cfs_list_add_tail(&lock->l_rk_ast, rpc_list);
+       list_add_tail(&lock->l_rk_ast, rpc_list);
         LDLM_LOCK_GET(lock);
 
         unlock_res_and_lock(lock);
@@ -2511,10 +2513,10 @@ int ldlm_revoke_lock_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
 
 void ldlm_revoke_export_locks(struct obd_export *exp)
 {
-        cfs_list_t  rpc_list;
+       struct list_head  rpc_list;
         ENTRY;
 
-        CFS_INIT_LIST_HEAD(&rpc_list);
+       INIT_LIST_HEAD(&rpc_list);
         cfs_hash_for_each_empty(exp->exp_lock_hash,
                                 ldlm_revoke_lock_cb, &rpc_list);
         ldlm_run_ast_work(exp->exp_obd->obd_namespace, &rpc_list,
@@ -2533,20 +2535,20 @@ static struct ldlm_bl_work_item *ldlm_bl_get_work(struct ldlm_bl_pool *blp)
 
        spin_lock(&blp->blp_lock);
        /* process a request from the blp_list at least every blp_num_threads */
-       if (!cfs_list_empty(&blp->blp_list) &&
-           (cfs_list_empty(&blp->blp_prio_list) || num_bl == 0))
-               blwi = cfs_list_entry(blp->blp_list.next,
-                                     struct ldlm_bl_work_item, blwi_entry);
+       if (!list_empty(&blp->blp_list) &&
+           (list_empty(&blp->blp_prio_list) || num_bl == 0))
+               blwi = list_entry(blp->blp_list.next,
+                                 struct ldlm_bl_work_item, blwi_entry);
        else
-               if (!cfs_list_empty(&blp->blp_prio_list))
-                       blwi = cfs_list_entry(blp->blp_prio_list.next,
-                                             struct ldlm_bl_work_item,
-                                             blwi_entry);
+               if (!list_empty(&blp->blp_prio_list))
+                       blwi = list_entry(blp->blp_prio_list.next,
+                                         struct ldlm_bl_work_item,
+                                         blwi_entry);
 
        if (blwi) {
                if (++num_bl >= atomic_read(&blp->blp_num_threads))
                        num_bl = 0;
-               cfs_list_del(&blwi->blwi_entry);
+               list_del(&blwi->blwi_entry);
        }
        spin_unlock(&blp->blp_lock);
 
@@ -2717,50 +2719,50 @@ ldlm_export_lock_hash(cfs_hash_t *hs, const void *key, unsigned mask)
 }
 
 static void *
-ldlm_export_lock_key(cfs_hlist_node_t *hnode)
+ldlm_export_lock_key(struct hlist_node *hnode)
 {
         struct ldlm_lock *lock;
 
-        lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+       lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
         return &lock->l_remote_handle;
 }
 
 static void
-ldlm_export_lock_keycpy(cfs_hlist_node_t *hnode, void *key)
+ldlm_export_lock_keycpy(struct hlist_node *hnode, void *key)
 {
         struct ldlm_lock     *lock;
 
-        lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+       lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
         lock->l_remote_handle = *(struct lustre_handle *)key;
 }
 
 static int
-ldlm_export_lock_keycmp(const void *key, cfs_hlist_node_t *hnode)
+ldlm_export_lock_keycmp(const void *key, struct hlist_node *hnode)
 {
         return lustre_handle_equal(ldlm_export_lock_key(hnode), key);
 }
 
 static void *
-ldlm_export_lock_object(cfs_hlist_node_t *hnode)
+ldlm_export_lock_object(struct hlist_node *hnode)
 {
-        return cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+       return hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
 }
 
 static void
-ldlm_export_lock_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
+ldlm_export_lock_get(cfs_hash_t *hs, struct hlist_node *hnode)
 {
         struct ldlm_lock *lock;
 
-        lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+       lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
         LDLM_LOCK_GET(lock);
 }
 
 static void
-ldlm_export_lock_put(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
+ldlm_export_lock_put(cfs_hash_t *hs, struct hlist_node *hnode)
 {
         struct ldlm_lock *lock;
 
-        lock = cfs_hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
+       lock = hlist_entry(hnode, struct ldlm_lock, l_exp_hash);
         LDLM_LOCK_RELEASE(lock);
 }
 
@@ -2930,8 +2932,8 @@ static int ldlm_setup(void)
        ldlm_state->ldlm_bl_pool = blp;
 
        spin_lock_init(&blp->blp_lock);
-       CFS_INIT_LIST_HEAD(&blp->blp_list);
-       CFS_INIT_LIST_HEAD(&blp->blp_prio_list);
+       INIT_LIST_HEAD(&blp->blp_list);
+       INIT_LIST_HEAD(&blp->blp_prio_list);
        init_waitqueue_head(&blp->blp_waitq);
        atomic_set(&blp->blp_num_threads, 0);
        atomic_set(&blp->blp_busy_threads, 0);
@@ -2953,11 +2955,11 @@ static int ldlm_setup(void)
        }
 
 # ifdef HAVE_SERVER_SUPPORT
-       CFS_INIT_LIST_HEAD(&expired_lock_thread.elt_expired_locks);
+       INIT_LIST_HEAD(&expired_lock_thread.elt_expired_locks);
        expired_lock_thread.elt_state = ELT_STOPPED;
        init_waitqueue_head(&expired_lock_thread.elt_waitq);
 
-       CFS_INIT_LIST_HEAD(&waiting_locks_list);
+       INIT_LIST_HEAD(&waiting_locks_list);
        spin_lock_init(&waiting_locks_spinlock);
        cfs_timer_init(&waiting_locks_timer, waiting_locks_callback, 0);
 
@@ -2989,8 +2991,8 @@ static int ldlm_cleanup(void)
 {
         ENTRY;
 
-        if (!cfs_list_empty(ldlm_namespace_list(LDLM_NAMESPACE_SERVER)) ||
-            !cfs_list_empty(ldlm_namespace_list(LDLM_NAMESPACE_CLIENT))) {
+       if (!list_empty(ldlm_namespace_list(LDLM_NAMESPACE_SERVER)) ||
+           !list_empty(ldlm_namespace_list(LDLM_NAMESPACE_CLIENT))) {
                 CERROR("ldlm still has namespaces; clean these up first.\n");
                 ldlm_dump_all_namespaces(LDLM_NAMESPACE_SERVER, D_DLMTRACE);
                 ldlm_dump_all_namespaces(LDLM_NAMESPACE_CLIENT, D_DLMTRACE);
@@ -3009,7 +3011,7 @@ static int ldlm_cleanup(void)
                        init_completion(&blp->blp_comp);
 
                        spin_lock(&blp->blp_lock);
-                       cfs_list_add_tail(&blwi.blwi_entry, &blp->blp_list);
+                       list_add_tail(&blwi.blwi_entry, &blp->blp_list);
                        wake_up(&blp->blp_waitq);
                        spin_unlock(&blp->blp_lock);
 
@@ -3051,6 +3053,11 @@ int ldlm_init(void)
        mutex_init(&ldlm_ref_mutex);
        mutex_init(ldlm_namespace_lock(LDLM_NAMESPACE_SERVER));
        mutex_init(ldlm_namespace_lock(LDLM_NAMESPACE_CLIENT));
+
+       INIT_LIST_HEAD(&ldlm_srv_namespace_list);
+       INIT_LIST_HEAD(&ldlm_cli_active_namespace_list);
+       INIT_LIST_HEAD(&ldlm_cli_inactive_namespace_list);
+
        ldlm_resource_slab = kmem_cache_create("ldlm_resources",
                                               sizeof(struct ldlm_resource), 0,
                                               SLAB_HWCACHE_ALIGN, NULL);