4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 # include <liblustre.h>
43 #include <obd_support.h>
44 #include <lustre_import.h>
45 #include <lustre_net.h>
47 #include <lustre_lib.h>
48 #include <lustre/lustre_idl.h>
49 #include <lprocfs_status.h>
51 #if defined(__linux__)
52 #include <linux/obd_class.h>
53 #elif defined(__APPLE__)
54 #include <darwin/obd_class.h>
55 #elif defined(__WINNT__)
56 #include <winnt/obd_class.h>
58 #error Unsupported operating system.
61 #define OBD_STATFS_NODELAY 0x0001 /* requests should be send without delay
62 * and resends for avoid deadlocks */
63 #define OBD_STATFS_FROM_CACHE 0x0002 /* the statfs callback should not update
65 #define OBD_STATFS_PTLRPCD 0x0004 /* requests will be sent via ptlrpcd
66 * instead of a specific set. This
67 * means that we cannot rely on the set
68 * interpret routine to be called.
69 * lov_statfs_fini() must thus be called
70 * by the request interpret routine */
72 #define OBD_FL_PUNCH 0x00000001 /* To indicate it is punch operation */
74 /* OBD Device Declarations */
75 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
76 extern cfs_rwlock_t obd_dev_lock;
78 /* OBD Operations Declarations */
79 extern struct obd_device *class_conn2obd(struct lustre_handle *);
80 extern struct obd_device *class_exp2obd(struct obd_export *);
81 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
82 extern int lustre_get_jobid(char *jobid);
84 struct lu_device_type;
87 struct obd_export *class_conn2export(struct lustre_handle *);
88 int class_register_type(struct obd_ops *, struct md_ops *,
89 struct lprocfs_vars *, const char *nm,
90 struct lu_device_type *ldt);
91 int class_unregister_type(const char *nm);
93 struct obd_device *class_newdev(const char *type_name, const char *name);
94 void class_release_dev(struct obd_device *obd);
96 int class_name2dev(const char *name);
97 struct obd_device *class_name2obd(const char *name);
98 int class_uuid2dev(struct obd_uuid *uuid);
99 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
100 void class_obd_list(void);
101 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
102 const char * typ_name,
103 struct obd_uuid *grp_uuid);
104 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
106 struct obd_device * class_num2obd(int num);
108 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
110 char *obd_export_nid2str(struct obd_export *exp);
112 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
113 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
114 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
116 int obd_zombie_impexp_init(void);
117 void obd_zombie_impexp_stop(void);
118 void obd_zombie_impexp_cull(void);
119 void obd_zombie_barrier(void);
120 void obd_exports_barrier(struct obd_device *obd);
121 int kuc_len(int payload_len);
122 struct kuc_hdr * kuc_ptr(void *p);
123 int kuc_ispayload(void *p);
124 void *kuc_alloc(int payload_len, int transport, int type);
125 void kuc_free(void *p, int payload_len);
128 int class_process_config(struct lustre_cfg *lcfg);
129 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
130 struct lustre_cfg *lcfg, void *data);
131 int class_attach(struct lustre_cfg *lcfg);
132 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
133 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
134 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
135 struct obd_device *class_incref(struct obd_device *obd,
136 const char *scope, const void *source);
137 void class_decref(struct obd_device *obd,
138 const char *scope, const void *source);
139 void dump_exports(struct obd_device *obd, int locks);
143 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
145 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
147 memset(lvars, 0, sizeof(*lvars));
151 #define CFG_F_START 0x01 /* Set when we start updating from a log */
152 #define CFG_F_MARKER 0x02 /* We are within a maker */
153 #define CFG_F_SKIP 0x04 /* We should ignore this cfg command */
154 #define CFG_F_COMPAT146 0x08 /* Allow old-style logs */
155 #define CFG_F_EXCLUDE 0x10 /* OST exclusion list */
157 /* Passed as data param to class_config_parse_llog */
158 struct config_llog_instance {
161 struct super_block *cfg_sb;
162 struct obd_uuid cfg_uuid;
163 int cfg_last_idx; /* for partial llog processing */
166 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
167 struct config_llog_instance *cfg);
168 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
169 struct config_llog_instance *cfg);
173 CONFIG_T_SPTLRPC = 1,
174 CONFIG_T_RECOVER = 2,
178 /* list of active configuration logs */
179 struct config_llog_data {
180 struct ldlm_res_id cld_resid;
181 struct config_llog_instance cld_cfg;
182 cfs_list_t cld_list_chain;
183 cfs_atomic_t cld_refcount;
184 struct config_llog_data *cld_sptlrpc;/* depended sptlrpc log */
185 struct config_llog_data *cld_recover; /* imperative recover log */
186 struct obd_export *cld_mgcexp;
187 cfs_mutex_t cld_lock;
189 unsigned int cld_stopping:1, /* we were told to stop
191 cld_lostlock:1; /* lock not requeued */
195 struct lustre_profile {
202 struct lustre_profile *class_get_profile(const char * prof);
203 void class_del_profile(const char *prof);
204 void class_del_profiles(void);
206 #if LUSTRE_TRACKS_LOCK_EXP_REFS
208 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
209 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
210 extern void (*class_export_dump_hook)(struct obd_export *);
214 #define __class_export_add_lock_ref(exp, lock) do {} while(0)
215 #define __class_export_del_lock_ref(exp, lock) do {} while(0)
219 #define class_export_rpc_get(exp) \
221 cfs_atomic_inc(&(exp)->exp_rpc_count); \
222 CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n", \
223 (exp), cfs_atomic_read(&(exp)->exp_rpc_count)); \
224 class_export_get(exp); \
227 #define class_export_rpc_put(exp) \
229 LASSERT_ATOMIC_POS(&exp->exp_rpc_count); \
230 cfs_atomic_dec(&(exp)->exp_rpc_count); \
231 CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n", \
232 (exp), cfs_atomic_read(&(exp)->exp_rpc_count)); \
233 class_export_put(exp); \
236 #define class_export_lock_get(exp, lock) \
238 cfs_atomic_inc(&(exp)->exp_locks_count); \
239 __class_export_add_lock_ref(exp, lock); \
240 CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
241 (exp), cfs_atomic_read(&(exp)->exp_locks_count)); \
242 class_export_get(exp); \
245 #define class_export_lock_put(exp, lock) \
247 LASSERT_ATOMIC_POS(&exp->exp_locks_count); \
248 cfs_atomic_dec(&(exp)->exp_locks_count); \
249 __class_export_del_lock_ref(exp, lock); \
250 CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
251 (exp), cfs_atomic_read(&(exp)->exp_locks_count)); \
252 class_export_put(exp); \
255 #define class_export_cb_get(exp) \
257 cfs_atomic_inc(&(exp)->exp_cb_count); \
258 CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
259 (exp), cfs_atomic_read(&(exp)->exp_cb_count)); \
260 class_export_get(exp); \
263 #define class_export_cb_put(exp) \
265 LASSERT_ATOMIC_POS(&exp->exp_cb_count); \
266 cfs_atomic_dec(&(exp)->exp_cb_count); \
267 CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
268 (exp), cfs_atomic_read(&(exp)->exp_cb_count)); \
269 class_export_put(exp); \
273 struct obd_export *class_export_get(struct obd_export *exp);
274 void class_export_put(struct obd_export *exp);
275 struct obd_export *class_new_export(struct obd_device *obddev,
276 struct obd_uuid *cluuid);
277 void class_unlink_export(struct obd_export *exp);
279 struct obd_import *class_import_get(struct obd_import *);
280 void class_import_put(struct obd_import *);
281 struct obd_import *class_new_import(struct obd_device *obd);
282 void class_destroy_import(struct obd_import *exp);
284 struct obd_type *class_search_type(const char *name);
285 struct obd_type *class_get_type(const char *name);
286 void class_put_type(struct obd_type *type);
287 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
288 struct obd_uuid *cluuid);
289 int class_disconnect(struct obd_export *exp);
290 void class_fail_export(struct obd_export *exp);
291 int class_connected_export(struct obd_export *exp);
292 void class_disconnect_exports(struct obd_device *obddev);
293 int class_manual_cleanup(struct obd_device *obd);
294 void class_disconnect_stale_exports(struct obd_device *,
295 int (*test_export)(struct obd_export *));
296 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
298 return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
299 (obd->obd_force ? OBD_OPT_FORCE : 0) |
300 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
304 #ifdef HAVE_SERVER_SUPPORT
305 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
307 LASSERT(exp->exp_obd);
308 return exp->exp_obd->u.obt.obt_lut;
311 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
313 LASSERT(obd->u.obt.obt_lut);
314 return &obd->u.obt.obt_lut->lut_lsd;
318 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
319 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
320 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
321 unsigned int ia_valid);
322 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
323 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
324 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
327 #define OBT(dev) (dev)->obd_type
328 #define OBP(dev, op) (dev)->obd_type->typ_dt_ops->o_ ## op
329 #define MDP(dev, op) (dev)->obd_type->typ_md_ops->m_ ## op
330 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
332 /* Ensure obd_setup: used for cleanup which must be called
333 while obd is stopping */
334 #define OBD_CHECK_DEV(obd) \
337 CERROR("NULL device\n"); \
342 /* ensure obd_setup and !obd_stopping */
343 #define OBD_CHECK_DEV_ACTIVE(obd) \
345 OBD_CHECK_DEV(obd); \
346 if (!(obd)->obd_set_up || (obd)->obd_stopping) { \
347 CERROR("Device %d not setup\n", \
355 #define OBD_COUNTER_OFFSET(op) \
356 ((offsetof(struct obd_ops, o_ ## op) - \
357 offsetof(struct obd_ops, o_iocontrol)) \
358 / sizeof(((struct obd_ops *)(0))->o_iocontrol))
360 #define OBD_COUNTER_INCREMENT(obdx, op) \
361 if ((obdx)->obd_stats != NULL) { \
362 unsigned int coffset; \
363 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
364 OBD_COUNTER_OFFSET(op); \
365 LASSERT(coffset < (obdx)->obd_stats->ls_num); \
366 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
369 #define EXP_COUNTER_INCREMENT(export, op) \
370 if ((export)->exp_obd->obd_stats != NULL) { \
371 unsigned int coffset; \
372 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
373 OBD_COUNTER_OFFSET(op); \
374 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num); \
375 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
376 if ((export)->exp_nid_stats != NULL && \
377 (export)->exp_nid_stats->nid_stats != NULL) \
378 lprocfs_counter_incr( \
379 (export)->exp_nid_stats->nid_stats, coffset);\
382 #define MD_COUNTER_OFFSET(op) \
383 ((offsetof(struct md_ops, m_ ## op) - \
384 offsetof(struct md_ops, m_getstatus)) \
385 / sizeof(((struct md_ops *)(0))->m_getstatus))
387 #define MD_COUNTER_INCREMENT(obdx, op) \
388 if ((obd)->md_stats != NULL) { \
389 unsigned int coffset; \
390 coffset = (unsigned int)((obdx)->md_cntr_base) + \
391 MD_COUNTER_OFFSET(op); \
392 LASSERT(coffset < (obdx)->md_stats->ls_num); \
393 lprocfs_counter_incr((obdx)->md_stats, coffset); \
396 #define EXP_MD_COUNTER_INCREMENT(export, op) \
397 if ((export)->exp_obd->obd_stats != NULL) { \
398 unsigned int coffset; \
399 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) + \
400 MD_COUNTER_OFFSET(op); \
401 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num); \
402 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset); \
403 if ((export)->exp_md_stats != NULL) \
404 lprocfs_counter_incr( \
405 (export)->exp_md_stats, coffset); \
409 #define OBD_COUNTER_OFFSET(op)
410 #define OBD_COUNTER_INCREMENT(obd, op)
411 #define EXP_COUNTER_INCREMENT(exp, op)
412 #define MD_COUNTER_INCREMENT(obd, op)
413 #define EXP_MD_COUNTER_INCREMENT(exp, op)
416 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
418 /* Always add in ldlm_stats */
419 tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
420 ,LPROCFS_STATS_FLAG_NOPERCPU);
421 if (tmp->nid_ldlm_stats == NULL)
424 lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
426 return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
427 tmp->nid_ldlm_stats);
430 #define OBD_CHECK_MD_OP(obd, op, err) \
432 if (!OBT(obd) || !MDP((obd), op)) { \
434 CERROR("md_" #op ": dev %s/%d no operation\n", \
435 obd->obd_name, obd->obd_minor); \
440 #define EXP_CHECK_MD_OP(exp, op) \
442 if ((exp) == NULL) { \
443 CERROR("obd_" #op ": NULL export\n"); \
446 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
447 CERROR("obd_" #op ": cleaned up obd\n"); \
448 RETURN(-EOPNOTSUPP); \
450 if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
451 CERROR("obd_" #op ": dev %s/%d no operation\n", \
452 (exp)->exp_obd->obd_name, \
453 (exp)->exp_obd->obd_minor); \
454 RETURN(-EOPNOTSUPP); \
459 #define OBD_CHECK_DT_OP(obd, op, err) \
461 if (!OBT(obd) || !OBP((obd), op)) { \
463 CERROR("obd_" #op ": dev %d no operation\n", \
469 #define EXP_CHECK_DT_OP(exp, op) \
471 if ((exp) == NULL) { \
472 CERROR("obd_" #op ": NULL export\n"); \
475 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
476 CERROR("obd_" #op ": cleaned up obd\n"); \
477 RETURN(-EOPNOTSUPP); \
479 if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
480 CERROR("obd_" #op ": dev %d no operation\n", \
481 (exp)->exp_obd->obd_minor); \
482 RETURN(-EOPNOTSUPP); \
486 #define CTXT_CHECK_OP(ctxt, op, err) \
488 if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) { \
490 CERROR("lop_" #op ": dev %d no operation\n", \
491 ctxt->loc_obd->obd_minor); \
496 static inline int class_devno_max(void)
498 return MAX_OBD_DEVICES;
501 static inline int obd_get_info(const struct lu_env *env,
502 struct obd_export *exp, __u32 keylen,
503 void *key, __u32 *vallen, void *val,
504 struct lov_stripe_md *lsm)
509 EXP_CHECK_DT_OP(exp, get_info);
510 EXP_COUNTER_INCREMENT(exp, get_info);
512 rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
517 static inline int obd_set_info_async(const struct lu_env *env,
518 struct obd_export *exp, obd_count keylen,
519 void *key, obd_count vallen, void *val,
520 struct ptlrpc_request_set *set)
525 EXP_CHECK_DT_OP(exp, set_info_async);
526 EXP_COUNTER_INCREMENT(exp, set_info_async);
528 rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
534 * obd-lu integration.
536 * Functionality is being moved into new lu_device-based layering, but some
537 * pieces of configuration process are still based on obd devices.
539 * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
540 * subsume ->o_setup() methods of obd devices they replace. The same for
541 * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
542 * result, obd_setup() and obd_process_config() branch and call one XOR
545 * Yet neither lu_device_type_operations::ldto_device_fini() nor
546 * lu_device_type_operations::ldto_device_free() fully implement the
547 * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
548 * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
551 #define DECLARE_LU_VARS(ldt, d) \
552 struct lu_device_type *ldt; \
555 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
558 DECLARE_LU_VARS(ldt, d);
561 ldt = obd->obd_type->typ_lu;
563 struct lu_context session_ctx;
565 lu_context_init(&session_ctx, LCT_SESSION);
566 session_ctx.lc_thread = NULL;
567 lu_context_enter(&session_ctx);
569 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
571 env.le_ses = &session_ctx;
572 d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
581 lu_context_exit(&session_ctx);
582 lu_context_fini(&session_ctx);
585 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
586 OBD_COUNTER_INCREMENT(obd, setup);
587 rc = OBP(obd, setup)(obd, cfg);
592 static inline int obd_precleanup(struct obd_device *obd,
593 enum obd_cleanup_stage cleanup_stage)
596 DECLARE_LU_VARS(ldt, d);
600 ldt = obd->obd_type->typ_lu;
602 if (ldt != NULL && d != NULL) {
603 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
606 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
608 ldt->ldt_ops->ldto_device_fini(&env, d);
613 OBD_CHECK_DT_OP(obd, precleanup, 0);
614 OBD_COUNTER_INCREMENT(obd, precleanup);
616 rc = OBP(obd, precleanup)(obd, cleanup_stage);
620 static inline int obd_cleanup(struct obd_device *obd)
623 DECLARE_LU_VARS(ldt, d);
628 ldt = obd->obd_type->typ_lu;
630 if (ldt != NULL && d != NULL) {
633 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
635 ldt->ldt_ops->ldto_device_free(&env, d);
637 obd->obd_lu_dev = NULL;
640 OBD_CHECK_DT_OP(obd, cleanup, 0);
641 OBD_COUNTER_INCREMENT(obd, cleanup);
643 rc = OBP(obd, cleanup)(obd);
647 static inline void obd_cleanup_client_import(struct obd_device *obd)
651 /* If we set up but never connected, the
652 client import will not have been cleaned. */
653 cfs_down_write(&obd->u.cli.cl_sem);
654 if (obd->u.cli.cl_import) {
655 struct obd_import *imp;
656 imp = obd->u.cli.cl_import;
657 CDEBUG(D_CONFIG, "%s: client import never connected\n",
659 ptlrpc_invalidate_import(imp);
660 if (imp->imp_rq_pool) {
661 ptlrpc_free_rq_pool(imp->imp_rq_pool);
662 imp->imp_rq_pool = NULL;
664 client_destroy_import(imp);
665 obd->u.cli.cl_import = NULL;
667 cfs_up_write(&obd->u.cli.cl_sem);
673 obd_process_config(struct obd_device *obd, int datalen, void *data)
676 DECLARE_LU_VARS(ldt, d);
681 obd->obd_process_conf = 1;
682 ldt = obd->obd_type->typ_lu;
684 if (ldt != NULL && d != NULL) {
687 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
689 rc = d->ld_ops->ldo_process_config(&env, d, data);
693 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
694 rc = OBP(obd, process_config)(obd, datalen, data);
696 OBD_COUNTER_INCREMENT(obd, process_config);
697 obd->obd_process_conf = 0;
702 /* Pack an in-memory MD struct for storage on disk.
703 * Returns +ve size of packed MD (0 for free), or -ve error.
705 * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
706 * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
707 * If @*disk_tgt == NULL, it will be allocated
709 static inline int obd_packmd(struct obd_export *exp,
710 struct lov_mds_md **disk_tgt,
711 struct lov_stripe_md *mem_src)
716 EXP_CHECK_DT_OP(exp, packmd);
717 EXP_COUNTER_INCREMENT(exp, packmd);
719 rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
723 static inline int obd_size_diskmd(struct obd_export *exp,
724 struct lov_stripe_md *mem_src)
726 return obd_packmd(exp, NULL, mem_src);
729 /* helper functions */
730 static inline int obd_alloc_diskmd(struct obd_export *exp,
731 struct lov_mds_md **disk_tgt)
734 LASSERT(*disk_tgt == NULL);
735 return obd_packmd(exp, disk_tgt, NULL);
738 static inline int obd_free_diskmd(struct obd_export *exp,
739 struct lov_mds_md **disk_tgt)
743 return obd_packmd(exp, disk_tgt, NULL);
746 /* Unpack an MD struct from disk to in-memory format.
747 * Returns +ve size of unpacked MD (0 for free), or -ve error.
749 * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
750 * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
751 * If @*mem_tgt == NULL, it will be allocated
753 static inline int obd_unpackmd(struct obd_export *exp,
754 struct lov_stripe_md **mem_tgt,
755 struct lov_mds_md *disk_src,
761 EXP_CHECK_DT_OP(exp, unpackmd);
762 EXP_COUNTER_INCREMENT(exp, unpackmd);
764 rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
768 /* helper functions */
769 static inline int obd_alloc_memmd(struct obd_export *exp,
770 struct lov_stripe_md **mem_tgt)
773 LASSERT(*mem_tgt == NULL);
774 return obd_unpackmd(exp, mem_tgt, NULL, 0);
777 static inline int obd_free_memmd(struct obd_export *exp,
778 struct lov_stripe_md **mem_tgt)
784 rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
789 static inline int obd_precreate(struct obd_export *exp)
794 EXP_CHECK_DT_OP(exp, precreate);
795 OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
797 rc = OBP(exp->exp_obd, precreate)(exp);
801 static inline int obd_create_async(struct obd_export *exp,
802 struct obd_info *oinfo,
803 struct lov_stripe_md **ea,
804 struct obd_trans_info *oti)
809 EXP_CHECK_DT_OP(exp, create_async);
810 EXP_COUNTER_INCREMENT(exp, create_async);
812 rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
816 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
817 struct obdo *obdo, struct lov_stripe_md **ea,
818 struct obd_trans_info *oti)
823 EXP_CHECK_DT_OP(exp, create);
824 EXP_COUNTER_INCREMENT(exp, create);
826 rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
830 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
831 struct obdo *obdo, struct lov_stripe_md *ea,
832 struct obd_trans_info *oti,
833 struct obd_export *md_exp, void *capa)
838 EXP_CHECK_DT_OP(exp, destroy);
839 EXP_COUNTER_INCREMENT(exp, destroy);
841 rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
845 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
846 struct obd_info *oinfo)
851 EXP_CHECK_DT_OP(exp, getattr);
852 EXP_COUNTER_INCREMENT(exp, getattr);
854 rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
858 static inline int obd_getattr_async(struct obd_export *exp,
859 struct obd_info *oinfo,
860 struct ptlrpc_request_set *set)
865 EXP_CHECK_DT_OP(exp, getattr_async);
866 EXP_COUNTER_INCREMENT(exp, getattr_async);
868 rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
872 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
873 struct obd_info *oinfo,
874 struct obd_trans_info *oti)
879 EXP_CHECK_DT_OP(exp, setattr);
880 EXP_COUNTER_INCREMENT(exp, setattr);
882 rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
886 /* This performs all the requests set init/wait/destroy actions. */
887 static inline int obd_setattr_rqset(struct obd_export *exp,
888 struct obd_info *oinfo,
889 struct obd_trans_info *oti)
891 struct ptlrpc_request_set *set = NULL;
895 EXP_CHECK_DT_OP(exp, setattr_async);
896 EXP_COUNTER_INCREMENT(exp, setattr_async);
898 set = ptlrpc_prep_set();
902 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
904 rc = ptlrpc_set_wait(set);
905 ptlrpc_set_destroy(set);
909 /* This adds all the requests into @set if @set != NULL, otherwise
910 all requests are sent asynchronously without waiting for response. */
911 static inline int obd_setattr_async(struct obd_export *exp,
912 struct obd_info *oinfo,
913 struct obd_trans_info *oti,
914 struct ptlrpc_request_set *set)
919 EXP_CHECK_DT_OP(exp, setattr_async);
920 EXP_COUNTER_INCREMENT(exp, setattr_async);
922 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
926 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
929 struct obd_device *obd = imp->imp_obd;
933 OBD_CHECK_DEV_ACTIVE(obd);
934 OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
935 OBD_COUNTER_INCREMENT(obd, add_conn);
937 rc = OBP(obd, add_conn)(imp, uuid, priority);
941 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
943 struct obd_device *obd = imp->imp_obd;
947 OBD_CHECK_DEV_ACTIVE(obd);
948 OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
949 OBD_COUNTER_INCREMENT(obd, del_conn);
951 rc = OBP(obd, del_conn)(imp, uuid);
955 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
957 struct obd_uuid *uuid;
960 OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
961 EXP_COUNTER_INCREMENT(exp, get_uuid);
963 uuid = OBP(exp->exp_obd, get_uuid)(exp);
967 /** Create a new /a exp on device /a obd for the uuid /a cluuid
968 * @param exp New export handle
969 * @param d Connect data, supported flags are set, flags also understood
970 * by obd are returned.
972 static inline int obd_connect(const struct lu_env *env,
973 struct obd_export **exp,struct obd_device *obd,
974 struct obd_uuid *cluuid,
975 struct obd_connect_data *data,
979 __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
983 OBD_CHECK_DEV_ACTIVE(obd);
984 OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
985 OBD_COUNTER_INCREMENT(obd, connect);
987 rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
988 /* check that only subset is granted */
989 LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
990 data->ocd_connect_flags));
994 static inline int obd_reconnect(const struct lu_env *env,
995 struct obd_export *exp,
996 struct obd_device *obd,
997 struct obd_uuid *cluuid,
998 struct obd_connect_data *d,
1002 __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
1007 OBD_CHECK_DEV_ACTIVE(obd);
1008 OBD_CHECK_DT_OP(obd, reconnect, 0);
1009 OBD_COUNTER_INCREMENT(obd, reconnect);
1011 rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
1012 /* check that only subset is granted */
1013 LASSERT(ergo(d != NULL,
1014 (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
1018 static inline int obd_disconnect(struct obd_export *exp)
1023 EXP_CHECK_DT_OP(exp, disconnect);
1024 EXP_COUNTER_INCREMENT(exp, disconnect);
1026 rc = OBP(exp->exp_obd, disconnect)(exp);
1030 static inline int obd_fid_init(struct obd_export *exp)
1035 OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
1036 EXP_COUNTER_INCREMENT(exp, fid_init);
1038 rc = OBP(exp->exp_obd, fid_init)(exp);
1042 static inline int obd_fid_fini(struct obd_export *exp)
1047 OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
1048 EXP_COUNTER_INCREMENT(exp, fid_fini);
1050 rc = OBP(exp->exp_obd, fid_fini)(exp);
1054 static inline int obd_fid_alloc(struct obd_export *exp,
1056 struct md_op_data *op_data)
1061 EXP_CHECK_DT_OP(exp, fid_alloc);
1062 EXP_COUNTER_INCREMENT(exp, fid_alloc);
1064 rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1068 static inline int obd_fid_delete(struct obd_export *exp,
1069 const struct lu_fid *fid)
1074 EXP_CHECK_DT_OP(exp, fid_delete);
1075 EXP_COUNTER_INCREMENT(exp, fid_delete);
1077 rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
1081 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
1086 OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1087 EXP_COUNTER_INCREMENT(exp, ping);
1089 rc = OBP(exp->exp_obd, ping)(env, exp);
1093 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1098 OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1099 OBD_COUNTER_INCREMENT(obd, pool_new);
1101 rc = OBP(obd, pool_new)(obd, poolname);
1105 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1110 OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1111 OBD_COUNTER_INCREMENT(obd, pool_del);
1113 rc = OBP(obd, pool_del)(obd, poolname);
1117 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1122 OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1123 OBD_COUNTER_INCREMENT(obd, pool_add);
1125 rc = OBP(obd, pool_add)(obd, poolname, ostname);
1129 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1134 OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1135 OBD_COUNTER_INCREMENT(obd, pool_rem);
1137 rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1141 static inline void obd_getref(struct obd_device *obd)
1144 if (OBT(obd) && OBP(obd, getref)) {
1145 OBD_COUNTER_INCREMENT(obd, getref);
1146 OBP(obd, getref)(obd);
1151 static inline void obd_putref(struct obd_device *obd)
1154 if (OBT(obd) && OBP(obd, putref)) {
1155 OBD_COUNTER_INCREMENT(obd, putref);
1156 OBP(obd, putref)(obd);
1161 static inline int obd_init_export(struct obd_export *exp)
1166 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1167 OBP((exp)->exp_obd, init_export))
1168 rc = OBP(exp->exp_obd, init_export)(exp);
1172 static inline int obd_destroy_export(struct obd_export *exp)
1175 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1176 OBP((exp)->exp_obd, destroy_export))
1177 OBP(exp->exp_obd, destroy_export)(exp);
1181 static inline int obd_extent_calc(struct obd_export *exp,
1182 struct lov_stripe_md *md,
1183 int cmd, obd_off *offset)
1187 EXP_CHECK_DT_OP(exp, extent_calc);
1188 rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1192 static inline struct dentry *
1193 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1195 LASSERT(exp->exp_obd);
1197 return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1202 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1204 LASSERT(exp->exp_obd);
1205 CERROR("FIXME what's the story here? This needs to be an obd fn?\n");
1207 return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1208 dentry, exp->exp_obd);
1213 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1214 * If the cache is older than @max_age we will get a new value from the
1215 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1216 static inline int obd_statfs_async(struct obd_export *exp,
1217 struct obd_info *oinfo,
1219 struct ptlrpc_request_set *rqset)
1222 struct obd_device *obd;
1225 if (exp == NULL || exp->exp_obd == NULL)
1229 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1230 OBD_COUNTER_INCREMENT(obd, statfs);
1232 CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1233 obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1234 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1235 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1237 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1238 " objects "LPU64"/"LPU64"\n",
1239 obd->obd_name, &obd->obd_osfs,
1240 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1241 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1242 cfs_spin_lock(&obd->obd_osfs_lock);
1243 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1244 cfs_spin_unlock(&obd->obd_osfs_lock);
1245 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1246 if (oinfo->oi_cb_up)
1247 oinfo->oi_cb_up(oinfo, 0);
1252 static inline int obd_statfs_rqset(struct obd_export *exp,
1253 struct obd_statfs *osfs, __u64 max_age,
1256 struct ptlrpc_request_set *set = NULL;
1257 struct obd_info oinfo = { { { 0 } } };
1261 set = ptlrpc_prep_set();
1265 oinfo.oi_osfs = osfs;
1266 oinfo.oi_flags = flags;
1267 rc = obd_statfs_async(exp, &oinfo, max_age, set);
1269 rc = ptlrpc_set_wait(set);
1270 ptlrpc_set_destroy(set);
1274 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1275 * If the cache is older than @max_age we will get a new value from the
1276 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1277 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1278 struct obd_statfs *osfs, __u64 max_age,
1282 struct obd_device *obd = exp->exp_obd;
1288 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1289 OBD_COUNTER_INCREMENT(obd, statfs);
1291 CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1292 obd->obd_osfs_age, max_age);
1293 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1294 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1296 cfs_spin_lock(&obd->obd_osfs_lock);
1297 memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1298 obd->obd_osfs_age = cfs_time_current_64();
1299 cfs_spin_unlock(&obd->obd_osfs_lock);
1302 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1303 " objects "LPU64"/"LPU64"\n",
1304 obd->obd_name, &obd->obd_osfs,
1305 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1306 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1307 cfs_spin_lock(&obd->obd_osfs_lock);
1308 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1309 cfs_spin_unlock(&obd->obd_osfs_lock);
1314 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
1315 obd_size start, obd_size end)
1317 struct ptlrpc_request_set *set = NULL;
1321 OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1322 EXP_COUNTER_INCREMENT(exp, sync);
1324 set = ptlrpc_prep_set();
1328 rc = OBP(exp->exp_obd, sync)(NULL, exp, oinfo, start, end, set);
1330 rc = ptlrpc_set_wait(set);
1331 ptlrpc_set_destroy(set);
1335 static inline int obd_sync(const struct lu_env *env, struct obd_export *exp,
1336 struct obd_info *oinfo, obd_size start, obd_size end,
1337 struct ptlrpc_request_set *set)
1342 OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1343 EXP_COUNTER_INCREMENT(exp, sync);
1345 rc = OBP(exp->exp_obd, sync)(env, exp, oinfo, start, end, set);
1349 static inline int obd_punch_rqset(struct obd_export *exp,
1350 struct obd_info *oinfo,
1351 struct obd_trans_info *oti)
1353 struct ptlrpc_request_set *set = NULL;
1357 EXP_CHECK_DT_OP(exp, punch);
1358 EXP_COUNTER_INCREMENT(exp, punch);
1360 set = ptlrpc_prep_set();
1364 rc = OBP(exp->exp_obd, punch)(NULL, exp, oinfo, oti, set);
1366 rc = ptlrpc_set_wait(set);
1367 ptlrpc_set_destroy(set);
1371 static inline int obd_punch(const struct lu_env *env, struct obd_export *exp,
1372 struct obd_info *oinfo, struct obd_trans_info *oti,
1373 struct ptlrpc_request_set *rqset)
1378 EXP_CHECK_DT_OP(exp, punch);
1379 EXP_COUNTER_INCREMENT(exp, punch);
1381 rc = OBP(exp->exp_obd, punch)(env, exp, oinfo, oti, rqset);
1385 static inline int obd_brw(int cmd, struct obd_export *exp,
1386 struct obd_info *oinfo, obd_count oa_bufs,
1387 struct brw_page *pg, struct obd_trans_info *oti)
1392 EXP_CHECK_DT_OP(exp, brw);
1393 EXP_COUNTER_INCREMENT(exp, brw);
1395 if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1396 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1397 "or OBD_BRW_CHECK\n");
1401 rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1405 static inline int obd_preprw(const struct lu_env *env, int cmd,
1406 struct obd_export *exp, struct obdo *oa,
1407 int objcount, struct obd_ioobj *obj,
1408 struct niobuf_remote *remote, int *pages,
1409 struct niobuf_local *local,
1410 struct obd_trans_info *oti,
1411 struct lustre_capa *capa)
1416 EXP_CHECK_DT_OP(exp, preprw);
1417 EXP_COUNTER_INCREMENT(exp, preprw);
1419 rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1420 pages, local, oti, capa);
1424 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1425 struct obd_export *exp, struct obdo *oa,
1426 int objcount, struct obd_ioobj *obj,
1427 struct niobuf_remote *rnb, int pages,
1428 struct niobuf_local *local,
1429 struct obd_trans_info *oti, int rc)
1433 EXP_CHECK_DT_OP(exp, commitrw);
1434 EXP_COUNTER_INCREMENT(exp, commitrw);
1436 rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1437 rnb, pages, local, oti, rc);
1441 static inline int obd_merge_lvb(struct obd_export *exp,
1442 struct lov_stripe_md *lsm,
1443 struct ost_lvb *lvb, int kms_only)
1448 EXP_CHECK_DT_OP(exp, merge_lvb);
1449 EXP_COUNTER_INCREMENT(exp, merge_lvb);
1451 rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1455 static inline int obd_adjust_kms(struct obd_export *exp,
1456 struct lov_stripe_md *lsm, obd_off size,
1462 EXP_CHECK_DT_OP(exp, adjust_kms);
1463 EXP_COUNTER_INCREMENT(exp, adjust_kms);
1465 rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1469 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1470 int len, void *karg, void *uarg)
1475 EXP_CHECK_DT_OP(exp, iocontrol);
1476 EXP_COUNTER_INCREMENT(exp, iocontrol);
1478 rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1482 static inline int obd_enqueue_rqset(struct obd_export *exp,
1483 struct obd_info *oinfo,
1484 struct ldlm_enqueue_info *einfo)
1486 struct ptlrpc_request_set *set = NULL;
1490 EXP_CHECK_DT_OP(exp, enqueue);
1491 EXP_COUNTER_INCREMENT(exp, enqueue);
1493 set = ptlrpc_prep_set();
1497 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1499 rc = ptlrpc_set_wait(set);
1500 ptlrpc_set_destroy(set);
1504 static inline int obd_enqueue(struct obd_export *exp,
1505 struct obd_info *oinfo,
1506 struct ldlm_enqueue_info *einfo,
1507 struct ptlrpc_request_set *set)
1512 EXP_CHECK_DT_OP(exp, enqueue);
1513 EXP_COUNTER_INCREMENT(exp, enqueue);
1515 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1519 static inline int obd_change_cbdata(struct obd_export *exp,
1520 struct lov_stripe_md *lsm,
1521 ldlm_iterator_t it, void *data)
1526 EXP_CHECK_DT_OP(exp, change_cbdata);
1527 EXP_COUNTER_INCREMENT(exp, change_cbdata);
1529 rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1533 static inline int obd_find_cbdata(struct obd_export *exp,
1534 struct lov_stripe_md *lsm,
1535 ldlm_iterator_t it, void *data)
1540 EXP_CHECK_DT_OP(exp, find_cbdata);
1541 EXP_COUNTER_INCREMENT(exp, find_cbdata);
1543 rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1547 static inline int obd_cancel(struct obd_export *exp,
1548 struct lov_stripe_md *ea, __u32 mode,
1549 struct lustre_handle *lockh)
1554 EXP_CHECK_DT_OP(exp, cancel);
1555 EXP_COUNTER_INCREMENT(exp, cancel);
1557 rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1561 static inline int obd_cancel_unused(struct obd_export *exp,
1562 struct lov_stripe_md *ea,
1563 ldlm_cancel_flags_t flags,
1569 EXP_CHECK_DT_OP(exp, cancel_unused);
1570 EXP_COUNTER_INCREMENT(exp, cancel_unused);
1572 rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1576 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1577 struct obd_capa *oc, struct obd_client_handle *handle,
1583 EXP_CHECK_DT_OP(exp, pin);
1584 EXP_COUNTER_INCREMENT(exp, pin);
1586 rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1590 static inline int obd_unpin(struct obd_export *exp,
1591 struct obd_client_handle *handle, int flag)
1596 EXP_CHECK_DT_OP(exp, unpin);
1597 EXP_COUNTER_INCREMENT(exp, unpin);
1599 rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1604 static inline void obd_import_event(struct obd_device *obd,
1605 struct obd_import *imp,
1606 enum obd_import_event event)
1610 CERROR("NULL device\n");
1614 if (obd->obd_set_up && OBP(obd, import_event)) {
1615 OBD_COUNTER_INCREMENT(obd, import_event);
1616 OBP(obd, import_event)(obd, imp, event);
1621 static inline int obd_llog_connect(struct obd_export *exp,
1622 struct llogd_conn_body *body)
1627 OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1628 EXP_COUNTER_INCREMENT(exp, llog_connect);
1630 rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1635 static inline int obd_notify(struct obd_device *obd,
1636 struct obd_device *watched,
1637 enum obd_notify_event ev,
1644 /* the check for async_recov is a complete hack - I'm hereby
1645 overloading the meaning to also mean "this was called from
1646 mds_postsetup". I know that my mds is able to handle notifies
1647 by this point, and it needs to get them to execute mds_postrecov. */
1648 if (!obd->obd_set_up && !obd->obd_async_recov) {
1649 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1653 if (!OBP(obd, notify)) {
1654 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1658 OBD_COUNTER_INCREMENT(obd, notify);
1659 rc = OBP(obd, notify)(obd, watched, ev, data);
1663 static inline int obd_notify_observer(struct obd_device *observer,
1664 struct obd_device *observed,
1665 enum obd_notify_event ev,
1671 struct obd_notify_upcall *onu;
1673 if (observer->obd_observer)
1674 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1678 * Also, call non-obd listener, if any
1680 onu = &observer->obd_upcall;
1681 if (onu->onu_upcall != NULL)
1682 rc2 = onu->onu_upcall(observer, observed, ev,
1683 onu->onu_owner, NULL);
1687 return rc1 ? rc1 : rc2;
1690 static inline int obd_quotacheck(struct obd_export *exp,
1691 struct obd_quotactl *oqctl)
1696 EXP_CHECK_DT_OP(exp, quotacheck);
1697 EXP_COUNTER_INCREMENT(exp, quotacheck);
1699 rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1703 static inline int obd_quotactl(struct obd_export *exp,
1704 struct obd_quotactl *oqctl)
1709 EXP_CHECK_DT_OP(exp, quotactl);
1710 EXP_COUNTER_INCREMENT(exp, quotactl);
1712 rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1716 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1717 struct quota_adjust_qunit *oqaq,
1718 struct lustre_quota_ctxt *qctxt,
1719 struct ptlrpc_request_set *set)
1721 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1722 struct timeval work_start;
1723 struct timeval work_end;
1729 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1731 cfs_gettimeofday(&work_start);
1733 EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1734 EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1736 rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
1738 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1740 cfs_gettimeofday(&work_end);
1741 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1742 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1749 static inline int obd_health_check(const struct lu_env *env,
1750 struct obd_device *obd)
1752 /* returns: 0 on healthy
1753 * >0 on unhealthy + reason code/flag
1754 * however the only suppored reason == 1 right now
1755 * We'll need to define some better reasons
1756 * or flags in the future.
1762 /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1763 if (obd == NULL || !OBT(obd)) {
1764 CERROR("cleaned up obd\n");
1765 RETURN(-EOPNOTSUPP);
1767 if (!obd->obd_set_up || obd->obd_stopping)
1769 if (!OBP(obd, health_check))
1772 rc = OBP(obd, health_check)(env, obd);
1776 static inline int obd_register_observer(struct obd_device *obd,
1777 struct obd_device *observer)
1781 cfs_down_write(&obd->obd_observer_link_sem);
1782 if (obd->obd_observer && observer) {
1783 cfs_up_write(&obd->obd_observer_link_sem);
1786 obd->obd_observer = observer;
1787 cfs_up_write(&obd->obd_observer_link_sem);
1791 static inline int obd_pin_observer(struct obd_device *obd,
1792 struct obd_device **observer)
1795 cfs_down_read(&obd->obd_observer_link_sem);
1796 if (!obd->obd_observer) {
1798 cfs_up_read(&obd->obd_observer_link_sem);
1801 *observer = obd->obd_observer;
1805 static inline int obd_unpin_observer(struct obd_device *obd)
1808 cfs_up_read(&obd->obd_observer_link_sem);
1813 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1814 obd_page_removal_cb_t cb,
1815 obd_pin_extent_cb pin_cb)
1820 OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1821 OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1823 rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1827 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1828 obd_page_removal_cb_t cb)
1833 OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1834 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1836 rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1840 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1841 obd_lock_cancel_cb cb)
1846 OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1847 OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1849 rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1853 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1854 obd_lock_cancel_cb cb)
1859 OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1860 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1862 rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1867 /* metadata helpers */
1868 static inline int md_getstatus(struct obd_export *exp,
1869 struct lu_fid *fid, struct obd_capa **pc)
1874 EXP_CHECK_MD_OP(exp, getstatus);
1875 EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1876 rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1880 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1881 struct ptlrpc_request **request)
1885 EXP_CHECK_MD_OP(exp, getattr);
1886 EXP_MD_COUNTER_INCREMENT(exp, getattr);
1887 rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1891 static inline int md_change_cbdata(struct obd_export *exp,
1892 const struct lu_fid *fid,
1893 ldlm_iterator_t it, void *data)
1897 EXP_CHECK_MD_OP(exp, change_cbdata);
1898 EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1899 rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1903 static inline int md_find_cbdata(struct obd_export *exp,
1904 const struct lu_fid *fid,
1905 ldlm_iterator_t it, void *data)
1909 EXP_CHECK_MD_OP(exp, find_cbdata);
1910 EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1911 rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1915 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1916 struct md_open_data *mod,
1917 struct ptlrpc_request **request)
1921 EXP_CHECK_MD_OP(exp, close);
1922 EXP_MD_COUNTER_INCREMENT(exp, close);
1923 rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1927 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1928 const void *data, int datalen, int mode, __u32 uid,
1929 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1930 struct ptlrpc_request **request)
1934 EXP_CHECK_MD_OP(exp, create);
1935 EXP_MD_COUNTER_INCREMENT(exp, create);
1936 rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1937 uid, gid, cap_effective, rdev, request);
1941 static inline int md_done_writing(struct obd_export *exp,
1942 struct md_op_data *op_data,
1943 struct md_open_data *mod)
1947 EXP_CHECK_MD_OP(exp, done_writing);
1948 EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1949 rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1953 static inline int md_enqueue(struct obd_export *exp,
1954 struct ldlm_enqueue_info *einfo,
1955 struct lookup_intent *it,
1956 struct md_op_data *op_data,
1957 struct lustre_handle *lockh,
1958 void *lmm, int lmmsize,
1959 struct ptlrpc_request **req,
1960 int extra_lock_flags)
1964 EXP_CHECK_MD_OP(exp, enqueue);
1965 EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1966 rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1967 lmm, lmmsize, req, extra_lock_flags);
1971 static inline int md_getattr_name(struct obd_export *exp,
1972 struct md_op_data *op_data,
1973 struct ptlrpc_request **request)
1977 EXP_CHECK_MD_OP(exp, getattr_name);
1978 EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1979 rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1983 static inline int md_intent_lock(struct obd_export *exp,
1984 struct md_op_data *op_data, void *lmm,
1985 int lmmsize, struct lookup_intent *it,
1986 int flags, struct ptlrpc_request **reqp,
1987 ldlm_blocking_callback cb_blocking,
1988 int extra_lock_flags)
1992 EXP_CHECK_MD_OP(exp, intent_lock);
1993 EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1994 rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1995 it, flags, reqp, cb_blocking,
2000 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
2001 struct ptlrpc_request **request)
2005 EXP_CHECK_MD_OP(exp, link);
2006 EXP_MD_COUNTER_INCREMENT(exp, link);
2007 rc = MDP(exp->exp_obd, link)(exp, op_data, request);
2011 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
2012 const char *old, int oldlen, const char *new,
2013 int newlen, struct ptlrpc_request **request)
2017 EXP_CHECK_MD_OP(exp, rename);
2018 EXP_MD_COUNTER_INCREMENT(exp, rename);
2019 rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
2024 static inline int md_is_subdir(struct obd_export *exp,
2025 const struct lu_fid *pfid,
2026 const struct lu_fid *cfid,
2027 struct ptlrpc_request **request)
2031 EXP_CHECK_MD_OP(exp, is_subdir);
2032 EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
2033 rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
2037 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
2038 void *ea, int ealen, void *ea2, int ea2len,
2039 struct ptlrpc_request **request,
2040 struct md_open_data **mod)
2044 EXP_CHECK_MD_OP(exp, setattr);
2045 EXP_MD_COUNTER_INCREMENT(exp, setattr);
2046 rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
2047 ea2, ea2len, request, mod);
2051 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
2052 struct obd_capa *oc, struct ptlrpc_request **request)
2056 EXP_CHECK_MD_OP(exp, sync);
2057 EXP_MD_COUNTER_INCREMENT(exp, sync);
2058 rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
2062 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
2063 struct page **pages,
2064 struct ptlrpc_request **request)
2068 EXP_CHECK_MD_OP(exp, readpage);
2069 EXP_MD_COUNTER_INCREMENT(exp, readpage);
2070 rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
2074 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2075 struct ptlrpc_request **request)
2079 EXP_CHECK_MD_OP(exp, unlink);
2080 EXP_MD_COUNTER_INCREMENT(exp, unlink);
2081 rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2085 static inline int md_get_lustre_md(struct obd_export *exp,
2086 struct ptlrpc_request *req,
2087 struct obd_export *dt_exp,
2088 struct obd_export *md_exp,
2089 struct lustre_md *md)
2092 EXP_CHECK_MD_OP(exp, get_lustre_md);
2093 EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2094 RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2097 static inline int md_free_lustre_md(struct obd_export *exp,
2098 struct lustre_md *md)
2101 EXP_CHECK_MD_OP(exp, free_lustre_md);
2102 EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2103 RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2106 static inline int md_setxattr(struct obd_export *exp,
2107 const struct lu_fid *fid, struct obd_capa *oc,
2108 obd_valid valid, const char *name,
2109 const char *input, int input_size,
2110 int output_size, int flags, __u32 suppgid,
2111 struct ptlrpc_request **request)
2114 EXP_CHECK_MD_OP(exp, setxattr);
2115 EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2116 RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2117 input_size, output_size, flags,
2121 static inline int md_getxattr(struct obd_export *exp,
2122 const struct lu_fid *fid, struct obd_capa *oc,
2123 obd_valid valid, const char *name,
2124 const char *input, int input_size,
2125 int output_size, int flags,
2126 struct ptlrpc_request **request)
2129 EXP_CHECK_MD_OP(exp, getxattr);
2130 EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2131 RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2132 input_size, output_size, flags,
2136 static inline int md_set_open_replay_data(struct obd_export *exp,
2137 struct obd_client_handle *och,
2138 struct ptlrpc_request *open_req)
2141 EXP_CHECK_MD_OP(exp, set_open_replay_data);
2142 EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2143 RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2146 static inline int md_clear_open_replay_data(struct obd_export *exp,
2147 struct obd_client_handle *och)
2150 EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2151 EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2152 RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2155 static inline int md_set_lock_data(struct obd_export *exp,
2156 __u64 *lockh, void *data, __u64 *bits)
2159 EXP_CHECK_MD_OP(exp, set_lock_data);
2160 EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2161 RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2164 static inline int md_cancel_unused(struct obd_export *exp,
2165 const struct lu_fid *fid,
2166 ldlm_policy_data_t *policy,
2168 ldlm_cancel_flags_t flags,
2174 EXP_CHECK_MD_OP(exp, cancel_unused);
2175 EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2177 rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2182 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2183 const struct lu_fid *fid,
2185 ldlm_policy_data_t *policy,
2187 struct lustre_handle *lockh)
2190 EXP_CHECK_MD_OP(exp, lock_match);
2191 EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2192 RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2193 policy, mode, lockh));
2196 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2197 int def_asize, int cookiesize)
2200 EXP_CHECK_MD_OP(exp, init_ea_size);
2201 EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2202 RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2206 static inline int md_get_remote_perm(struct obd_export *exp,
2207 const struct lu_fid *fid,
2208 struct obd_capa *oc, __u32 suppgid,
2209 struct ptlrpc_request **request)
2212 EXP_CHECK_MD_OP(exp, get_remote_perm);
2213 EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2214 RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2218 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2223 EXP_CHECK_MD_OP(exp, renew_capa);
2224 EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2225 rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2229 static inline int md_unpack_capa(struct obd_export *exp,
2230 struct ptlrpc_request *req,
2231 const struct req_msg_field *field,
2232 struct obd_capa **oc)
2236 EXP_CHECK_MD_OP(exp, unpack_capa);
2237 EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2238 rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2242 static inline int md_intent_getattr_async(struct obd_export *exp,
2243 struct md_enqueue_info *minfo,
2244 struct ldlm_enqueue_info *einfo)
2248 EXP_CHECK_MD_OP(exp, intent_getattr_async);
2249 EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2250 rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2254 static inline int md_revalidate_lock(struct obd_export *exp,
2255 struct lookup_intent *it,
2256 struct lu_fid *fid, __u64 *bits)
2260 EXP_CHECK_MD_OP(exp, revalidate_lock);
2261 EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2262 rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2267 /* OBD Metadata Support */
2269 extern int obd_init_caches(void);
2270 extern void obd_cleanup_caches(void);
2272 /* support routines */
2273 extern cfs_mem_cache_t *obdo_cachep;
2275 #define OBDO_ALLOC(ptr) \
2277 OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO); \
2280 #define OBDO_FREE(ptr) \
2282 OBD_SLAB_FREE_PTR((ptr), obdo_cachep); \
2286 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2288 /* something here */
2291 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2293 /* something here */
2296 /* I'm as embarrassed about this as you are.
2298 * <shaver> // XXX do not look into _superhack with remaining eye
2299 * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2300 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2303 extern void obd_sysctl_init (void);
2304 extern void obd_sysctl_clean (void);
2307 typedef __u8 class_uuid_t[16];
2308 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2311 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2312 int class_add_uuid(const char *uuid, __u64 nid);
2313 int class_del_uuid (const char *uuid);
2314 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
2315 void class_init_uuidlist(void);
2316 void class_exit_uuidlist(void);
2319 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2320 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2323 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2325 #endif /* __LINUX_OBD_CLASS_H */