diff options
Diffstat (limited to 'kernel/drivers/staging/lustre/lustre/obdclass/genops.c')
| -rw-r--r-- | kernel/drivers/staging/lustre/lustre/obdclass/genops.c | 689 |
1 files changed, 88 insertions, 601 deletions
diff --git a/kernel/drivers/staging/lustre/lustre/obdclass/genops.c b/kernel/drivers/staging/lustre/lustre/obdclass/genops.c index 66b56784f..6477aeb88 100644 --- a/kernel/drivers/staging/lustre/lustre/obdclass/genops.c +++ b/kernel/drivers/staging/lustre/lustre/obdclass/genops.c @@ -45,7 +45,7 @@ spinlock_t obd_types_lock; -struct kmem_cache *obd_device_cachep; +static struct kmem_cache *obd_device_cachep; struct kmem_cache *obdo_cachep; EXPORT_SYMBOL(obdo_cachep); static struct kmem_cache *import_cachep; @@ -56,8 +56,6 @@ static spinlock_t obd_zombie_impexp_lock; static void obd_zombie_impexp_notify(void); static void obd_zombie_export_add(struct obd_export *exp); static void obd_zombie_import_add(struct obd_import *imp); -static void print_export_data(struct obd_export *exp, - const char *status, int locks); int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c); EXPORT_SYMBOL(ptlrpc_put_connection_superhack); @@ -70,10 +68,9 @@ static struct obd_device *obd_device_alloc(void) { struct obd_device *obd; - OBD_SLAB_ALLOC_PTR_GFP(obd, obd_device_cachep, GFP_NOFS); - if (obd != NULL) { + obd = kmem_cache_alloc(obd_device_cachep, GFP_NOFS | __GFP_ZERO); + if (obd != NULL) obd->obd_magic = OBD_DEVICE_MAGIC; - } return obd; } @@ -88,10 +85,10 @@ static void obd_device_free(struct obd_device *obd) LBUG(); } lu_ref_fini(&obd->obd_reference); - OBD_SLAB_FREE_PTR(obd, obd_device_cachep); + kmem_cache_free(obd_device_cachep, obd); } -struct obd_type *class_search_type(const char *name) +static struct obd_type *class_search_type(const char *name) { struct list_head *tmp; struct obd_type *type; @@ -107,9 +104,8 @@ struct obd_type *class_search_type(const char *name) spin_unlock(&obd_types_lock); return NULL; } -EXPORT_SYMBOL(class_search_type); -struct obd_type *class_get_type(const char *name) +static struct obd_type *class_get_type(const char *name) { struct obd_type *type = class_search_type(name); @@ -141,7 +137,6 @@ struct obd_type *class_get_type(const char *name) } return type; } -EXPORT_SYMBOL(class_get_type); void class_put_type(struct obd_type *type) { @@ -156,7 +151,7 @@ EXPORT_SYMBOL(class_put_type); #define CLASS_MAX_NAME 1024 int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops, - struct lprocfs_vars *vars, const char *name, + const char *name, struct lu_device_type *ldt) { struct obd_type *type; @@ -171,17 +166,17 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops, } rc = -ENOMEM; - OBD_ALLOC(type, sizeof(*type)); - if (type == NULL) + type = kzalloc(sizeof(*type), GFP_NOFS); + if (!type) return rc; - OBD_ALLOC_PTR(type->typ_dt_ops); - OBD_ALLOC_PTR(type->typ_md_ops); - OBD_ALLOC(type->typ_name, strlen(name) + 1); + type->typ_dt_ops = kzalloc(sizeof(*type->typ_dt_ops), GFP_NOFS); + type->typ_md_ops = kzalloc(sizeof(*type->typ_md_ops), GFP_NOFS); + type->typ_name = kzalloc(strlen(name) + 1, GFP_NOFS); - if (type->typ_dt_ops == NULL || - type->typ_md_ops == NULL || - type->typ_name == NULL) + if (!type->typ_dt_ops || + !type->typ_md_ops || + !type->typ_name) goto failed; *(type->typ_dt_ops) = *dt_ops; @@ -191,11 +186,19 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops, strcpy(type->typ_name, name); spin_lock_init(&type->obd_type_lock); - type->typ_procroot = lprocfs_register(type->typ_name, proc_lustre_root, - vars, type); - if (IS_ERR(type->typ_procroot)) { - rc = PTR_ERR(type->typ_procroot); - type->typ_procroot = NULL; + type->typ_debugfs_entry = ldebugfs_register(type->typ_name, + debugfs_lustre_root, + NULL, type); + if (IS_ERR_OR_NULL(type->typ_debugfs_entry)) { + rc = type->typ_debugfs_entry ? PTR_ERR(type->typ_debugfs_entry) + : -ENOMEM; + type->typ_debugfs_entry = NULL; + goto failed; + } + + type->typ_kobj = kobject_create_and_add(type->typ_name, lustre_kobj); + if (!type->typ_kobj) { + rc = -ENOMEM; goto failed; } @@ -213,13 +216,12 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops, return 0; failed: - if (type->typ_name != NULL) - OBD_FREE(type->typ_name, strlen(name) + 1); - if (type->typ_md_ops != NULL) - OBD_FREE_PTR(type->typ_md_ops); - if (type->typ_dt_ops != NULL) - OBD_FREE_PTR(type->typ_dt_ops); - OBD_FREE(type, sizeof(*type)); + if (type->typ_kobj) + kobject_put(type->typ_kobj); + kfree(type->typ_name); + kfree(type->typ_md_ops); + kfree(type->typ_dt_ops); + kfree(type); return rc; } EXPORT_SYMBOL(class_register_type); @@ -237,14 +239,16 @@ int class_unregister_type(const char *name) CERROR("type %s has refcount (%d)\n", name, type->typ_refcnt); /* This is a bad situation, let's make the best of it */ /* Remove ops, but leave the name for debugging */ - OBD_FREE_PTR(type->typ_dt_ops); - OBD_FREE_PTR(type->typ_md_ops); + kfree(type->typ_dt_ops); + kfree(type->typ_md_ops); return -EBUSY; } - if (type->typ_procroot) { - lprocfs_remove(&type->typ_procroot); - } + if (type->typ_kobj) + kobject_put(type->typ_kobj); + + if (!IS_ERR_OR_NULL(type->typ_debugfs_entry)) + ldebugfs_remove(&type->typ_debugfs_entry); if (type->typ_lu) lu_device_type_fini(type->typ_lu); @@ -252,12 +256,10 @@ int class_unregister_type(const char *name) spin_lock(&obd_types_lock); list_del(&type->typ_chain); spin_unlock(&obd_types_lock); - OBD_FREE(type->typ_name, strlen(name) + 1); - if (type->typ_dt_ops != NULL) - OBD_FREE_PTR(type->typ_dt_ops); - if (type->typ_md_ops != NULL) - OBD_FREE_PTR(type->typ_md_ops); - OBD_FREE(type, sizeof(*type)); + kfree(type->typ_name); + kfree(type->typ_dt_ops); + kfree(type->typ_md_ops); + kfree(type); return 0; } /* class_unregister_type */ EXPORT_SYMBOL(class_unregister_type); @@ -287,13 +289,13 @@ struct obd_device *class_newdev(const char *type_name, const char *name) } type = class_get_type(type_name); - if (type == NULL){ + if (!type) { CERROR("OBD: unknown type: %s\n", type_name); return ERR_PTR(-ENODEV); } newdev = obd_device_alloc(); - if (newdev == NULL) { + if (!newdev) { result = ERR_PTR(-ENOMEM); goto out_type; } @@ -333,7 +335,7 @@ struct obd_device *class_newdev(const char *type_name, const char *name) } write_unlock(&obd_dev_lock); - if (result == NULL && i >= class_devno_max()) { + if (!result && i >= class_devno_max()) { CERROR("all %u OBD devices used, increase MAX_OBD_DEVICES\n", class_devno_max()); result = ERR_PTR(-EOVERFLOW); @@ -433,15 +435,6 @@ int class_uuid2dev(struct obd_uuid *uuid) } EXPORT_SYMBOL(class_uuid2dev); -struct obd_device *class_uuid2obd(struct obd_uuid *uuid) -{ - int dev = class_uuid2dev(uuid); - if (dev < 0) - return NULL; - return class_num2obd(dev); -} -EXPORT_SYMBOL(class_uuid2obd); - /** * Get obd device from ::obd_devs[] * @@ -456,7 +449,7 @@ struct obd_device *class_num2obd(int num) if (num < class_devno_max()) { obd = obd_devs[num]; - if (obd == NULL) + if (!obd) return NULL; LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, @@ -471,55 +464,6 @@ struct obd_device *class_num2obd(int num) } EXPORT_SYMBOL(class_num2obd); -/** - * Get obd devices count. Device in any - * state are counted - * \retval obd device count - */ -int get_devices_count(void) -{ - int index, max_index = class_devno_max(), dev_count = 0; - - read_lock(&obd_dev_lock); - for (index = 0; index <= max_index; index++) { - struct obd_device *obd = class_num2obd(index); - if (obd != NULL) - dev_count++; - } - read_unlock(&obd_dev_lock); - - return dev_count; -} -EXPORT_SYMBOL(get_devices_count); - -void class_obd_list(void) -{ - char *status; - int i; - - read_lock(&obd_dev_lock); - for (i = 0; i < class_devno_max(); i++) { - struct obd_device *obd = class_num2obd(i); - - if (obd == NULL) - continue; - if (obd->obd_stopping) - status = "ST"; - else if (obd->obd_set_up) - status = "UP"; - else if (obd->obd_attached) - status = "AT"; - else - status = "--"; - LCONSOLE(D_CONFIG, "%3d %s %s %s %s %d\n", - i, status, obd->obd_type->typ_name, - obd->obd_name, obd->obd_uuid.uuid, - atomic_read(&obd->obd_refcount)); - } - read_unlock(&obd_dev_lock); - return; -} - /* Search for a client OBD connected to tgt_uuid. If grp_uuid is specified, then only the client with that uuid is returned, otherwise any client connected to the tgt is returned. */ @@ -533,13 +477,13 @@ struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid, for (i = 0; i < class_devno_max(); i++) { struct obd_device *obd = class_num2obd(i); - if (obd == NULL) + if (!obd) continue; if ((strncmp(obd->obd_type->typ_name, typ_name, strlen(typ_name)) == 0)) { if (obd_uuid_equals(tgt_uuid, &obd->u.cli.cl_target_uuid) && - ((grp_uuid)? obd_uuid_equals(grp_uuid, + ((grp_uuid) ? obd_uuid_equals(grp_uuid, &obd->obd_uuid) : 1)) { read_unlock(&obd_dev_lock); return obd; @@ -560,7 +504,7 @@ struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid, int *next) { int i; - if (next == NULL) + if (!next) i = 0; else if (*next >= 0 && *next < class_devno_max()) i = *next; @@ -571,10 +515,10 @@ struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid, int *next) for (; i < class_devno_max(); i++) { struct obd_device *obd = class_num2obd(i); - if (obd == NULL) + if (!obd) continue; if (obd_uuid_equals(grp_uuid, &obd->obd_uuid)) { - if (next != NULL) + if (next) *next = i+1; read_unlock(&obd_dev_lock); return obd; @@ -602,7 +546,7 @@ int class_notify_sptlrpc_conf(const char *fsname, int namelen) for (i = 0; i < class_devno_max(); i++) { obd = class_num2obd(i); - if (obd == NULL || obd->obd_set_up == 0 || obd->obd_stopping) + if (!obd || obd->obd_set_up == 0 || obd->obd_stopping) continue; /* only notify mdc, osc, mdt, ost */ @@ -632,52 +576,36 @@ EXPORT_SYMBOL(class_notify_sptlrpc_conf); void obd_cleanup_caches(void) { - if (obd_device_cachep) { - kmem_cache_destroy(obd_device_cachep); - obd_device_cachep = NULL; - } - if (obdo_cachep) { - kmem_cache_destroy(obdo_cachep); - obdo_cachep = NULL; - } - if (import_cachep) { - kmem_cache_destroy(import_cachep); - import_cachep = NULL; - } - if (capa_cachep) { - kmem_cache_destroy(capa_cachep); - capa_cachep = NULL; - } + kmem_cache_destroy(obd_device_cachep); + obd_device_cachep = NULL; + kmem_cache_destroy(obdo_cachep); + obdo_cachep = NULL; + kmem_cache_destroy(import_cachep); + import_cachep = NULL; } int obd_init_caches(void) { - LASSERT(obd_device_cachep == NULL); + LASSERT(!obd_device_cachep); obd_device_cachep = kmem_cache_create("ll_obd_dev_cache", sizeof(struct obd_device), 0, 0, NULL); if (!obd_device_cachep) goto out; - LASSERT(obdo_cachep == NULL); + LASSERT(!obdo_cachep); obdo_cachep = kmem_cache_create("ll_obdo_cache", sizeof(struct obdo), 0, 0, NULL); if (!obdo_cachep) goto out; - LASSERT(import_cachep == NULL); + LASSERT(!import_cachep); import_cachep = kmem_cache_create("ll_import_cache", sizeof(struct obd_import), 0, 0, NULL); if (!import_cachep) goto out; - LASSERT(capa_cachep == NULL); - capa_cachep = kmem_cache_create("capa_cache", - sizeof(struct obd_capa), 0, 0, NULL); - if (!capa_cachep) - goto out; - return 0; out: obd_cleanup_caches(); @@ -714,36 +642,15 @@ struct obd_device *class_exp2obd(struct obd_export *exp) } EXPORT_SYMBOL(class_exp2obd); -struct obd_device *class_conn2obd(struct lustre_handle *conn) -{ - struct obd_export *export; - export = class_conn2export(conn); - if (export) { - struct obd_device *obd = export->exp_obd; - class_export_put(export); - return obd; - } - return NULL; -} -EXPORT_SYMBOL(class_conn2obd); - struct obd_import *class_exp2cliimp(struct obd_export *exp) { struct obd_device *obd = exp->exp_obd; - if (obd == NULL) - return NULL; - return obd->u.cli.cl_import; -} -EXPORT_SYMBOL(class_exp2cliimp); -struct obd_import *class_conn2cliimp(struct lustre_handle *conn) -{ - struct obd_device *obd = class_conn2obd(conn); - if (obd == NULL) + if (!obd) return NULL; return obd->u.cli.cl_import; } -EXPORT_SYMBOL(class_conn2cliimp); +EXPORT_SYMBOL(class_exp2cliimp); /* Export management functions */ static void class_export_destroy(struct obd_export *exp) @@ -819,7 +726,7 @@ struct obd_export *class_new_export(struct obd_device *obd, struct cfs_hash *hash = NULL; int rc = 0; - OBD_ALLOC_PTR(export); + export = kzalloc(sizeof(*export), GFP_NOFS); if (!export) return ERR_PTR(-ENOMEM); @@ -843,11 +750,9 @@ struct obd_export *class_new_export(struct obd_device *obd, INIT_LIST_HEAD(&export->exp_handle.h_link); INIT_LIST_HEAD(&export->exp_hp_rpcs); class_handle_hash(&export->exp_handle, &export_handle_ops); - export->exp_last_request_time = get_seconds(); spin_lock_init(&export->exp_lock); spin_lock_init(&export->exp_rpc_lock); INIT_HLIST_NODE(&export->exp_uuid_hash); - INIT_HLIST_NODE(&export->exp_nid_hash); spin_lock_init(&export->exp_bl_list_lock); INIT_LIST_HEAD(&export->exp_bl_list); @@ -864,7 +769,7 @@ struct obd_export *class_new_export(struct obd_device *obd, } hash = cfs_hash_getref(obd->obd_uuid_hash); - if (hash == NULL) { + if (!hash) { rc = -ENODEV; goto exit_unlock; } @@ -889,8 +794,6 @@ struct obd_export *class_new_export(struct obd_device *obd, class_incref(obd, "export", export); list_add(&export->exp_obd_chain, &export->exp_obd->obd_exports); - list_add_tail(&export->exp_obd_chain_timed, - &export->exp_obd->obd_exports_timed); export->exp_obd->obd_num_exports++; spin_unlock(&obd->obd_dev_lock); cfs_hash_putref(hash); @@ -904,7 +807,7 @@ exit_err: class_handle_unhash(&export->exp_handle); LASSERT(hlist_unhashed(&export->exp_uuid_hash)); obd_destroy_export(export); - OBD_FREE_PTR(export); + kfree(export); return ERR_PTR(rc); } EXPORT_SYMBOL(class_new_export); @@ -921,7 +824,6 @@ void class_unlink_export(struct obd_export *exp) &exp->exp_uuid_hash); list_move(&exp->exp_obd_chain, &exp->exp_obd->obd_unlinked_exports); - list_del_init(&exp->exp_obd_chain_timed); exp->exp_obd->obd_num_exports--; spin_unlock(&exp->exp_obd->obd_dev_lock); class_export_put(exp); @@ -945,10 +847,10 @@ static void class_import_destroy(struct obd_import *imp) struct obd_import_conn, oic_item); list_del_init(&imp_conn->oic_item); ptlrpc_put_connection_superhack(imp_conn->oic_conn); - OBD_FREE(imp_conn, sizeof(*imp_conn)); + kfree(imp_conn); } - LASSERT(imp->imp_sec == NULL); + LASSERT(!imp->imp_sec); class_decref(imp->imp_obd, "import", imp); OBD_FREE_RCU(imp, sizeof(*imp), &imp->imp_handle); } @@ -992,8 +894,10 @@ void class_import_put(struct obd_import *imp) } EXPORT_SYMBOL(class_import_put); -static void init_imp_at(struct imp_at *at) { +static void init_imp_at(struct imp_at *at) +{ int i; + at_init(&at->iat_net_latency, 0, 0); for (i = 0; i < IMP_AT_MAX_PORTALS; i++) { /* max service estimates are tracked on the server side, so @@ -1008,8 +912,8 @@ struct obd_import *class_new_import(struct obd_device *obd) { struct obd_import *imp; - OBD_ALLOC(imp, sizeof(*imp)); - if (imp == NULL) + imp = kzalloc(sizeof(*imp), GFP_NOFS); + if (!imp) return NULL; INIT_LIST_HEAD(&imp->imp_pinger_chain); @@ -1071,7 +975,7 @@ void __class_export_add_lock_ref(struct obd_export *exp, struct ldlm_lock *lock) LCONSOLE_WARN("setting export %p for lock %p which already has export %p\n", exp, lock, lock->l_exp_refs_target); } - if ((lock->l_exp_refs_nr ++) == 0) { + if ((lock->l_exp_refs_nr++) == 0) { list_add(&lock->l_exp_refs_link, &exp->exp_locks_list); lock->l_exp_refs_target = exp; } @@ -1108,6 +1012,7 @@ int class_connect(struct lustre_handle *conn, struct obd_device *obd, struct obd_uuid *cluuid) { struct obd_export *export; + LASSERT(conn != NULL); LASSERT(obd != NULL); LASSERT(cluuid != NULL); @@ -1125,51 +1030,6 @@ int class_connect(struct lustre_handle *conn, struct obd_device *obd, } EXPORT_SYMBOL(class_connect); -/* if export is involved in recovery then clean up related things */ -static void class_export_recovery_cleanup(struct obd_export *exp) -{ - struct obd_device *obd = exp->exp_obd; - - spin_lock(&obd->obd_recovery_task_lock); - if (exp->exp_delayed) - obd->obd_delayed_clients--; - if (obd->obd_recovering) { - if (exp->exp_in_recovery) { - spin_lock(&exp->exp_lock); - exp->exp_in_recovery = 0; - spin_unlock(&exp->exp_lock); - LASSERT_ATOMIC_POS(&obd->obd_connected_clients); - atomic_dec(&obd->obd_connected_clients); - } - - /* if called during recovery then should update - * obd_stale_clients counter, - * lightweight exports are not counted */ - if (exp->exp_failed && - (exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT) == 0) - exp->exp_obd->obd_stale_clients++; - } - spin_unlock(&obd->obd_recovery_task_lock); - - spin_lock(&exp->exp_lock); - /** Cleanup req replay fields */ - if (exp->exp_req_replay_needed) { - exp->exp_req_replay_needed = 0; - - LASSERT(atomic_read(&obd->obd_req_replay_clients)); - atomic_dec(&obd->obd_req_replay_clients); - } - - /** Cleanup lock replay data */ - if (exp->exp_lock_replay_needed) { - exp->exp_lock_replay_needed = 0; - - LASSERT(atomic_read(&obd->obd_lock_replay_clients)); - atomic_dec(&obd->obd_lock_replay_clients); - } - spin_unlock(&exp->exp_lock); -} - /* This function removes 1-3 references from the export: * 1 - for export pointer passed * and if disconnect really need @@ -1180,7 +1040,7 @@ int class_disconnect(struct obd_export *export) { int already_disconnected; - if (export == NULL) { + if (!export) { CWARN("attempting to free NULL export %p\n", export); return -EINVAL; } @@ -1193,20 +1053,12 @@ int class_disconnect(struct obd_export *export) /* class_cleanup(), abort_recovery(), and class_fail_export() * all end up in here, and if any of them race we shouldn't * call extra class_export_puts(). */ - if (already_disconnected) { - LASSERT(hlist_unhashed(&export->exp_nid_hash)); + if (already_disconnected) goto no_disconn; - } CDEBUG(D_IOCTL, "disconnect: cookie %#llx\n", export->exp_handle.h_cookie); - if (!hlist_unhashed(&export->exp_nid_hash)) - cfs_hash_del(export->exp_obd->obd_nid_hash, - &export->exp_connection->c_peer.nid, - &export->exp_nid_hash); - - class_export_recovery_cleanup(export); class_unlink_export(export); no_disconn: class_export_put(export); @@ -1214,135 +1066,6 @@ no_disconn: } EXPORT_SYMBOL(class_disconnect); -/* Return non-zero for a fully connected export */ -int class_connected_export(struct obd_export *exp) -{ - if (exp) { - int connected; - spin_lock(&exp->exp_lock); - connected = exp->exp_conn_cnt > 0; - spin_unlock(&exp->exp_lock); - return connected; - } - return 0; -} -EXPORT_SYMBOL(class_connected_export); - -static void class_disconnect_export_list(struct list_head *list, - enum obd_option flags) -{ - int rc; - struct obd_export *exp; - - /* It's possible that an export may disconnect itself, but - * nothing else will be added to this list. */ - while (!list_empty(list)) { - exp = list_entry(list->next, struct obd_export, - exp_obd_chain); - /* need for safe call CDEBUG after obd_disconnect */ - class_export_get(exp); - - spin_lock(&exp->exp_lock); - exp->exp_flags = flags; - spin_unlock(&exp->exp_lock); - - if (obd_uuid_equals(&exp->exp_client_uuid, - &exp->exp_obd->obd_uuid)) { - CDEBUG(D_HA, - "exp %p export uuid == obd uuid, don't discon\n", - exp); - /* Need to delete this now so we don't end up pointing - * to work_list later when this export is cleaned up. */ - list_del_init(&exp->exp_obd_chain); - class_export_put(exp); - continue; - } - - class_export_get(exp); - CDEBUG(D_HA, "%s: disconnecting export at %s (%p), last request at " CFS_TIME_T "\n", - exp->exp_obd->obd_name, obd_export_nid2str(exp), - exp, exp->exp_last_request_time); - /* release one export reference anyway */ - rc = obd_disconnect(exp); - - CDEBUG(D_HA, "disconnected export at %s (%p): rc %d\n", - obd_export_nid2str(exp), exp, rc); - class_export_put(exp); - } -} - -void class_disconnect_exports(struct obd_device *obd) -{ - struct list_head work_list; - - /* Move all of the exports from obd_exports to a work list, en masse. */ - INIT_LIST_HEAD(&work_list); - spin_lock(&obd->obd_dev_lock); - list_splice_init(&obd->obd_exports, &work_list); - list_splice_init(&obd->obd_delayed_exports, &work_list); - spin_unlock(&obd->obd_dev_lock); - - if (!list_empty(&work_list)) { - CDEBUG(D_HA, "OBD device %d (%p) has exports, disconnecting them\n", - obd->obd_minor, obd); - class_disconnect_export_list(&work_list, - exp_flags_from_obd(obd)); - } else - CDEBUG(D_HA, "OBD device %d (%p) has no exports\n", - obd->obd_minor, obd); -} -EXPORT_SYMBOL(class_disconnect_exports); - -/* Remove exports that have not completed recovery. - */ -void class_disconnect_stale_exports(struct obd_device *obd, - int (*test_export)(struct obd_export *)) -{ - struct list_head work_list; - struct obd_export *exp, *n; - int evicted = 0; - - INIT_LIST_HEAD(&work_list); - spin_lock(&obd->obd_dev_lock); - list_for_each_entry_safe(exp, n, &obd->obd_exports, - exp_obd_chain) { - /* don't count self-export as client */ - if (obd_uuid_equals(&exp->exp_client_uuid, - &exp->exp_obd->obd_uuid)) - continue; - - /* don't evict clients which have no slot in last_rcvd - * (e.g. lightweight connection) */ - if (exp->exp_target_data.ted_lr_idx == -1) - continue; - - spin_lock(&exp->exp_lock); - if (exp->exp_failed || test_export(exp)) { - spin_unlock(&exp->exp_lock); - continue; - } - exp->exp_failed = 1; - spin_unlock(&exp->exp_lock); - - list_move(&exp->exp_obd_chain, &work_list); - evicted++; - CDEBUG(D_HA, "%s: disconnect stale client %s@%s\n", - obd->obd_name, exp->exp_client_uuid.uuid, - exp->exp_connection == NULL ? "<unknown>" : - libcfs_nid2str(exp->exp_connection->c_peer.nid)); - print_export_data(exp, "EVICTING", 0); - } - spin_unlock(&obd->obd_dev_lock); - - if (evicted) - LCONSOLE_WARN("%s: disconnecting %d stale clients\n", - obd->obd_name, evicted); - - class_disconnect_export_list(&work_list, exp_flags_from_obd(obd) | - OBD_OPT_ABORT_RECOV); -} -EXPORT_SYMBOL(class_disconnect_stale_exports); - void class_fail_export(struct obd_export *exp) { int rc, already_failed; @@ -1381,189 +1104,18 @@ void class_fail_export(struct obd_export *exp) } EXPORT_SYMBOL(class_fail_export); -char *obd_export_nid2str(struct obd_export *exp) -{ - if (exp->exp_connection != NULL) - return libcfs_nid2str(exp->exp_connection->c_peer.nid); - - return "(no nid)"; -} -EXPORT_SYMBOL(obd_export_nid2str); - -int obd_export_evict_by_nid(struct obd_device *obd, const char *nid) -{ - struct cfs_hash *nid_hash; - struct obd_export *doomed_exp = NULL; - int exports_evicted = 0; - - lnet_nid_t nid_key = libcfs_str2nid((char *)nid); - - spin_lock(&obd->obd_dev_lock); - /* umount has run already, so evict thread should leave - * its task to umount thread now */ - if (obd->obd_stopping) { - spin_unlock(&obd->obd_dev_lock); - return exports_evicted; - } - nid_hash = obd->obd_nid_hash; - cfs_hash_getref(nid_hash); - spin_unlock(&obd->obd_dev_lock); - - do { - doomed_exp = cfs_hash_lookup(nid_hash, &nid_key); - if (doomed_exp == NULL) - break; - - LASSERTF(doomed_exp->exp_connection->c_peer.nid == nid_key, - "nid %s found, wanted nid %s, requested nid %s\n", - obd_export_nid2str(doomed_exp), - libcfs_nid2str(nid_key), nid); - LASSERTF(doomed_exp != obd->obd_self_export, - "self-export is hashed by NID?\n"); - exports_evicted++; - LCONSOLE_WARN("%s: evicting %s (at %s) by administrative request\n", - obd->obd_name, - obd_uuid2str(&doomed_exp->exp_client_uuid), - obd_export_nid2str(doomed_exp)); - class_fail_export(doomed_exp); - class_export_put(doomed_exp); - } while (1); - - cfs_hash_putref(nid_hash); - - if (!exports_evicted) - CDEBUG(D_HA, - "%s: can't disconnect NID '%s': no exports found\n", - obd->obd_name, nid); - return exports_evicted; -} -EXPORT_SYMBOL(obd_export_evict_by_nid); - -int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid) -{ - struct cfs_hash *uuid_hash; - struct obd_export *doomed_exp = NULL; - struct obd_uuid doomed_uuid; - int exports_evicted = 0; - - spin_lock(&obd->obd_dev_lock); - if (obd->obd_stopping) { - spin_unlock(&obd->obd_dev_lock); - return exports_evicted; - } - uuid_hash = obd->obd_uuid_hash; - cfs_hash_getref(uuid_hash); - spin_unlock(&obd->obd_dev_lock); - - obd_str2uuid(&doomed_uuid, uuid); - if (obd_uuid_equals(&doomed_uuid, &obd->obd_uuid)) { - CERROR("%s: can't evict myself\n", obd->obd_name); - cfs_hash_putref(uuid_hash); - return exports_evicted; - } - - doomed_exp = cfs_hash_lookup(uuid_hash, &doomed_uuid); - - if (doomed_exp == NULL) { - CERROR("%s: can't disconnect %s: no exports found\n", - obd->obd_name, uuid); - } else { - CWARN("%s: evicting %s at administrative request\n", - obd->obd_name, doomed_exp->exp_client_uuid.uuid); - class_fail_export(doomed_exp); - class_export_put(doomed_exp); - exports_evicted++; - } - cfs_hash_putref(uuid_hash); - - return exports_evicted; -} -EXPORT_SYMBOL(obd_export_evict_by_uuid); - #if LUSTRE_TRACKS_LOCK_EXP_REFS -void (*class_export_dump_hook)(struct obd_export*) = NULL; +void (*class_export_dump_hook)(struct obd_export *) = NULL; EXPORT_SYMBOL(class_export_dump_hook); #endif -static void print_export_data(struct obd_export *exp, const char *status, - int locks) -{ - struct ptlrpc_reply_state *rs; - struct ptlrpc_reply_state *first_reply = NULL; - int nreplies = 0; - - spin_lock(&exp->exp_lock); - list_for_each_entry(rs, &exp->exp_outstanding_replies, - rs_exp_list) { - if (nreplies == 0) - first_reply = rs; - nreplies++; - } - spin_unlock(&exp->exp_lock); - - CDEBUG(D_HA, "%s: %s %p %s %s %d (%d %d %d) %d %d %d %d: %p %s %llu\n", - exp->exp_obd->obd_name, status, exp, exp->exp_client_uuid.uuid, - obd_export_nid2str(exp), atomic_read(&exp->exp_refcount), - atomic_read(&exp->exp_rpc_count), - atomic_read(&exp->exp_cb_count), - atomic_read(&exp->exp_locks_count), - exp->exp_disconnected, exp->exp_delayed, exp->exp_failed, - nreplies, first_reply, nreplies > 3 ? "..." : "", - exp->exp_last_committed); -#if LUSTRE_TRACKS_LOCK_EXP_REFS - if (locks && class_export_dump_hook != NULL) - class_export_dump_hook(exp); -#endif -} - -void dump_exports(struct obd_device *obd, int locks) -{ - struct obd_export *exp; - - spin_lock(&obd->obd_dev_lock); - list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) - print_export_data(exp, "ACTIVE", locks); - list_for_each_entry(exp, &obd->obd_unlinked_exports, exp_obd_chain) - print_export_data(exp, "UNLINKED", locks); - list_for_each_entry(exp, &obd->obd_delayed_exports, exp_obd_chain) - print_export_data(exp, "DELAYED", locks); - spin_unlock(&obd->obd_dev_lock); - spin_lock(&obd_zombie_impexp_lock); - list_for_each_entry(exp, &obd_zombie_exports, exp_obd_chain) - print_export_data(exp, "ZOMBIE", locks); - spin_unlock(&obd_zombie_impexp_lock); -} -EXPORT_SYMBOL(dump_exports); - -void obd_exports_barrier(struct obd_device *obd) -{ - int waited = 2; - LASSERT(list_empty(&obd->obd_exports)); - spin_lock(&obd->obd_dev_lock); - while (!list_empty(&obd->obd_unlinked_exports)) { - spin_unlock(&obd->obd_dev_lock); - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(cfs_time_seconds(waited)); - if (waited > 5 && IS_PO2(waited)) { - LCONSOLE_WARN("%s is waiting for obd_unlinked_exports more than %d seconds. The obd refcount = %d. Is it stuck?\n", - obd->obd_name, waited, - atomic_read(&obd->obd_refcount)); - dump_exports(obd, 1); - } - waited *= 2; - spin_lock(&obd->obd_dev_lock); - } - spin_unlock(&obd->obd_dev_lock); -} -EXPORT_SYMBOL(obd_exports_barrier); - /* Total amount of zombies to be destroyed */ static int zombies_count; /** * kill zombie imports and exports */ -void obd_zombie_impexp_cull(void) +static void obd_zombie_impexp_cull(void) { struct obd_import *import; struct obd_export *export; @@ -1635,7 +1187,8 @@ static int obd_zombie_impexp_check(void *arg) /** * Add export to the obd_zombie thread and notify it. */ -static void obd_zombie_export_add(struct obd_export *exp) { +static void obd_zombie_export_add(struct obd_export *exp) +{ spin_lock(&exp->exp_obd->obd_dev_lock); LASSERT(!list_empty(&exp->exp_obd_chain)); list_del_init(&exp->exp_obd_chain); @@ -1651,9 +1204,9 @@ static void obd_zombie_export_add(struct obd_export *exp) { /** * Add import to the obd_zombie thread and notify it. */ -static void obd_zombie_import_add(struct obd_import *imp) { - LASSERT(imp->imp_sec == NULL); - LASSERT(imp->imp_rq_pool == NULL); +static void obd_zombie_import_add(struct obd_import *imp) +{ + LASSERT(!imp->imp_sec); spin_lock(&obd_zombie_impexp_lock); LASSERT(list_empty(&imp->imp_zombie_chain)); zombies_count++; @@ -1704,7 +1257,6 @@ void obd_zombie_barrier(void) } EXPORT_SYMBOL(obd_zombie_barrier); - /** * destroy zombie export/import thread. */ @@ -1734,7 +1286,6 @@ static int obd_zombie_impexp_thread(void *unused) return 0; } - /** * start destroy zombie import/export thread */ @@ -1757,6 +1308,7 @@ int obd_zombie_impexp_init(void) wait_for_completion(&obd_zombie_start); return 0; } + /** * stop destroy zombie import/export thread */ @@ -1766,68 +1318,3 @@ void obd_zombie_impexp_stop(void) obd_zombie_impexp_notify(); wait_for_completion(&obd_zombie_stop); } - -/***** Kernel-userspace comm helpers *******/ - -/* Get length of entire message, including header */ -int kuc_len(int payload_len) -{ - return sizeof(struct kuc_hdr) + payload_len; -} -EXPORT_SYMBOL(kuc_len); - -/* Get a pointer to kuc header, given a ptr to the payload - * @param p Pointer to payload area - * @returns Pointer to kuc header - */ -struct kuc_hdr *kuc_ptr(void *p) -{ - struct kuc_hdr *lh = ((struct kuc_hdr *)p) - 1; - LASSERT(lh->kuc_magic == KUC_MAGIC); - return lh; -} -EXPORT_SYMBOL(kuc_ptr); - -/* Test if payload is part of kuc message - * @param p Pointer to payload area - * @returns boolean - */ -int kuc_ispayload(void *p) -{ - struct kuc_hdr *kh = ((struct kuc_hdr *)p) - 1; - - if (kh->kuc_magic == KUC_MAGIC) - return 1; - else - return 0; -} -EXPORT_SYMBOL(kuc_ispayload); - -/* Alloc space for a message, and fill in header - * @return Pointer to payload area - */ -void *kuc_alloc(int payload_len, int transport, int type) -{ - struct kuc_hdr *lh; - int len = kuc_len(payload_len); - - OBD_ALLOC(lh, len); - if (lh == NULL) - return ERR_PTR(-ENOMEM); - - lh->kuc_magic = KUC_MAGIC; - lh->kuc_transport = transport; - lh->kuc_msgtype = type; - lh->kuc_msglen = len; - - return (void *)(lh + 1); -} -EXPORT_SYMBOL(kuc_alloc); - -/* Takes pointer to payload area */ -inline void kuc_free(void *p, int payload_len) -{ - struct kuc_hdr *lh = kuc_ptr(p); - OBD_FREE(lh, kuc_len(payload_len)); -} -EXPORT_SYMBOL(kuc_free); |