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, 2013, Intel Corporation.
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 */
71 #define OBD_STATFS_FOR_MDT0 0x0008 /* The statfs is only for retrieving
72 * information from MDT0. */
73 #define OBD_FL_PUNCH 0x00000001 /* To indicate it is punch operation */
75 /* OBD Device Declarations */
76 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
77 extern rwlock_t obd_dev_lock;
79 /* OBD Operations Declarations */
80 extern struct obd_device *class_conn2obd(struct lustre_handle *);
81 extern struct obd_device *class_exp2obd(struct obd_export *);
82 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
83 extern int lustre_get_jobid(char *jobid);
85 struct lu_device_type;
88 struct obd_export *class_conn2export(struct lustre_handle *);
89 int class_register_type(struct obd_ops *, struct md_ops *,
90 struct lprocfs_seq_vars *module_vars,
91 #ifndef HAVE_ONLY_PROCFS_SEQ
92 struct lprocfs_vars *,
95 struct lu_device_type *ldt);
96 int class_unregister_type(const char *nm);
98 struct obd_device *class_newdev(const char *type_name, const char *name);
99 void class_release_dev(struct obd_device *obd);
101 int class_name2dev(const char *name);
102 struct obd_device *class_name2obd(const char *name);
103 int class_uuid2dev(struct obd_uuid *uuid);
104 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
105 void class_obd_list(void);
106 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
107 const char * typ_name,
108 struct obd_uuid *grp_uuid);
109 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
111 struct obd_device * class_num2obd(int num);
112 int get_devices_count(void);
114 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
116 char *obd_export_nid2str(struct obd_export *exp);
118 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
119 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
120 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
122 int obd_zombie_impexp_init(void);
123 void obd_zombie_impexp_stop(void);
124 void obd_zombie_impexp_cull(void);
125 void obd_zombie_barrier(void);
126 void obd_exports_barrier(struct obd_device *obd);
127 int kuc_len(int payload_len);
128 struct kuc_hdr * kuc_ptr(void *p);
129 int kuc_ispayload(void *p);
130 void *kuc_alloc(int payload_len, int transport, int type);
131 void kuc_free(void *p, int payload_len);
135 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
136 struct llog_rec_hdr *, void *);
138 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
139 const char *new_name);
140 int class_process_config(struct lustre_cfg *lcfg);
141 #ifndef HAVE_ONLY_PROCFS_SEQ
142 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
143 struct lustre_cfg *lcfg, void *data);
145 int class_process_proc_seq_param(char *prefix, struct lprocfs_seq_vars *lvars,
146 struct lustre_cfg *lcfg, void *data);
147 int class_attach(struct lustre_cfg *lcfg);
148 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
149 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
150 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
151 struct obd_device *class_incref(struct obd_device *obd,
152 const char *scope, const void *source);
153 void class_decref(struct obd_device *obd,
154 const char *scope, const void *source);
155 void dump_exports(struct obd_device *obd, int locks);
156 int class_config_llog_handler(const struct lu_env *env,
157 struct llog_handle *handle,
158 struct llog_rec_hdr *rec, void *data);
159 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
160 int class_add_uuid(const char *uuid, __u64 nid);
162 #define CFG_F_START 0x01 /* Set when we start updating from a log */
163 #define CFG_F_MARKER 0x02 /* We are within a maker */
164 #define CFG_F_SKIP 0x04 /* We should ignore this cfg command */
165 #define CFG_F_COMPAT146 0x08 /* Allow old-style logs */
166 #define CFG_F_EXCLUDE 0x10 /* OST exclusion list */
168 /* Passed as data param to class_config_parse_llog */
169 struct config_llog_instance {
172 struct super_block *cfg_sb;
173 struct obd_uuid cfg_uuid;
174 llog_cb_t cfg_callback;
175 int cfg_last_idx; /* for partial llog processing */
179 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
180 char *name, struct config_llog_instance *cfg);
181 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
182 char *name, struct config_llog_instance *cfg);
186 CONFIG_T_SPTLRPC = 1,
187 CONFIG_T_RECOVER = 2,
192 #define PARAMS_FILENAME "params"
193 #define LCTL_UPCALL "lctl"
195 /* list of active configuration logs */
196 struct config_llog_data {
197 struct ldlm_res_id cld_resid;
198 struct config_llog_instance cld_cfg;
199 cfs_list_t cld_list_chain;
200 atomic_t cld_refcount;
201 struct config_llog_data *cld_sptlrpc;/* depended sptlrpc log */
202 struct config_llog_data *cld_params; /* common parameters log */
203 struct config_llog_data *cld_recover;/* imperative recover log */
204 struct obd_export *cld_mgcexp;
205 struct mutex cld_lock;
207 unsigned int cld_stopping:1, /* we were told to stop
209 cld_lostlock:1; /* lock not requeued */
213 struct lustre_profile {
220 struct lustre_profile *class_get_profile(const char * prof);
221 void class_del_profile(const char *prof);
222 void class_del_profiles(void);
224 #if LUSTRE_TRACKS_LOCK_EXP_REFS
226 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
227 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
228 extern void (*class_export_dump_hook)(struct obd_export *);
232 #define __class_export_add_lock_ref(exp, lock) do {} while(0)
233 #define __class_export_del_lock_ref(exp, lock) do {} while(0)
237 #define class_export_rpc_inc(exp) \
239 atomic_inc(&(exp)->exp_rpc_count); \
240 CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n", \
241 (exp), atomic_read(&(exp)->exp_rpc_count)); \
244 #define class_export_rpc_dec(exp) \
246 LASSERT_ATOMIC_POS(&exp->exp_rpc_count); \
247 atomic_dec(&(exp)->exp_rpc_count); \
248 CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n", \
249 (exp), atomic_read(&(exp)->exp_rpc_count)); \
252 #define class_export_lock_get(exp, lock) \
254 atomic_inc(&(exp)->exp_locks_count); \
255 __class_export_add_lock_ref(exp, lock); \
256 CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
257 (exp), atomic_read(&(exp)->exp_locks_count)); \
258 class_export_get(exp); \
261 #define class_export_lock_put(exp, lock) \
263 LASSERT_ATOMIC_POS(&exp->exp_locks_count); \
264 atomic_dec(&(exp)->exp_locks_count); \
265 __class_export_del_lock_ref(exp, lock); \
266 CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
267 (exp), atomic_read(&(exp)->exp_locks_count)); \
268 class_export_put(exp); \
271 #define class_export_cb_get(exp) \
273 atomic_inc(&(exp)->exp_cb_count); \
274 CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
275 (exp), atomic_read(&(exp)->exp_cb_count)); \
276 class_export_get(exp); \
279 #define class_export_cb_put(exp) \
281 LASSERT_ATOMIC_POS(&exp->exp_cb_count); \
282 atomic_dec(&(exp)->exp_cb_count); \
283 CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
284 (exp), atomic_read(&(exp)->exp_cb_count)); \
285 class_export_put(exp); \
289 struct obd_export *class_export_get(struct obd_export *exp);
290 void class_export_put(struct obd_export *exp);
291 struct obd_export *class_new_export(struct obd_device *obddev,
292 struct obd_uuid *cluuid);
293 void class_unlink_export(struct obd_export *exp);
295 struct obd_import *class_import_get(struct obd_import *);
296 void class_import_put(struct obd_import *);
297 struct obd_import *class_new_import(struct obd_device *obd);
298 void class_destroy_import(struct obd_import *exp);
300 struct obd_type *class_search_type(const char *name);
301 struct obd_type *class_get_type(const char *name);
302 void class_put_type(struct obd_type *type);
303 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
304 struct obd_uuid *cluuid);
305 int class_disconnect(struct obd_export *exp);
306 void class_fail_export(struct obd_export *exp);
307 int class_connected_export(struct obd_export *exp);
308 void class_disconnect_exports(struct obd_device *obddev);
309 int class_manual_cleanup(struct obd_device *obd);
310 void class_disconnect_stale_exports(struct obd_device *,
311 int (*test_export)(struct obd_export *));
312 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
314 return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
315 (obd->obd_force ? OBD_OPT_FORCE : 0) |
316 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
320 #ifdef HAVE_SERVER_SUPPORT
321 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
323 LASSERT(exp->exp_obd);
324 return exp->exp_obd->u.obt.obt_lut;
327 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
329 LASSERT(obd->u.obt.obt_lut);
330 return &obd->u.obt.obt_lut->lut_lsd;
334 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
335 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
336 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
337 unsigned int ia_valid);
338 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
339 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
340 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
343 void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
344 void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
346 #define OBT(dev) (dev)->obd_type
347 #define OBP(dev, op) (dev)->obd_type->typ_dt_ops->o_ ## op
348 #define MDP(dev, op) (dev)->obd_type->typ_md_ops->m_ ## op
349 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
351 /* Ensure obd_setup: used for cleanup which must be called
352 while obd is stopping */
353 #define OBD_CHECK_DEV(obd) \
356 CERROR("NULL device\n"); \
361 /* ensure obd_setup and !obd_stopping */
362 #define OBD_CHECK_DEV_ACTIVE(obd) \
364 OBD_CHECK_DEV(obd); \
365 if (!(obd)->obd_set_up || (obd)->obd_stopping) { \
366 CERROR("Device %d not setup\n", \
374 #define OBD_COUNTER_OFFSET(op) \
375 ((offsetof(struct obd_ops, o_ ## op) - \
376 offsetof(struct obd_ops, o_iocontrol)) \
377 / sizeof(((struct obd_ops *)NULL)->o_iocontrol))
379 /* The '- 1' below is for o_owner. */
380 #define NUM_OBD_STATS \
381 (sizeof(struct obd_ops) / \
382 sizeof(((struct obd_ops *)NULL)->o_iocontrol) - 1)
384 #define OBD_COUNTER_INCREMENT(obd, op) \
385 lprocfs_counter_incr((obd)->obd_stats, \
386 (obd)->obd_cntr_base + OBD_COUNTER_OFFSET(op))
388 #define EXP_COUNTER_INCREMENT(exp, op) \
391 _off = (exp)->exp_obd->obd_cntr_base + OBD_COUNTER_OFFSET(op); \
392 lprocfs_counter_incr((exp)->exp_obd->obd_stats, _off); \
393 if ((exp)->exp_obd->obd_uses_nid_stats && \
394 (exp)->exp_nid_stats != NULL) \
395 lprocfs_counter_incr((exp)->exp_nid_stats->nid_stats, \
399 #define _MD_COUNTER_OFFSET(m_op) \
400 ((offsetof(struct md_ops, m_op) - \
401 offsetof(struct md_ops, MD_STATS_FIRST_OP)) / \
402 sizeof(((struct md_ops *)NULL)->MD_STATS_FIRST_OP))
404 #define MD_COUNTER_OFFSET(op) _MD_COUNTER_OFFSET(m_ ## op)
406 #define NUM_MD_STATS \
407 (_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) - \
408 _MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) + 1)
410 /* Note that we only increment md counters for ops whose offset is less
411 * than NUM_MD_STATS. This is explained in a comment in the definition
412 * of struct md_ops. */
413 #define EXP_MD_COUNTER_INCREMENT(exp, op) \
415 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS) \
416 lprocfs_counter_incr((exp)->exp_obd->obd_md_stats, \
417 (exp)->exp_obd->obd_md_cntr_base + \
418 MD_COUNTER_OFFSET(op)); \
422 #define OBD_COUNTER_OFFSET(op)
423 #define OBD_COUNTER_INCREMENT(obd, op)
424 #define EXP_COUNTER_INCREMENT(exp, op)
425 #define EXP_MD_COUNTER_INCREMENT(exp, op)
428 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
430 /* Always add in ldlm_stats */
431 tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
432 ,LPROCFS_STATS_FLAG_NOPERCPU);
433 if (tmp->nid_ldlm_stats == NULL)
436 lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
438 return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
439 tmp->nid_ldlm_stats);
442 #define EXP_CHECK_MD_OP(exp, op) \
444 if ((exp) == NULL) { \
445 CERROR("obd_" #op ": NULL export\n"); \
448 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
449 CERROR("obd_" #op ": cleaned up obd\n"); \
450 RETURN(-EOPNOTSUPP); \
452 if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
453 CERROR("obd_" #op ": dev %s/%d no operation\n", \
454 (exp)->exp_obd->obd_name, \
455 (exp)->exp_obd->obd_minor); \
456 RETURN(-EOPNOTSUPP); \
461 #define OBD_CHECK_DT_OP(obd, op, err) \
463 if (!OBT(obd) || !OBP((obd), op)) { \
465 CERROR("obd_" #op ": dev %d no operation\n", \
471 #define EXP_CHECK_DT_OP(exp, op) \
473 if ((exp) == NULL) { \
474 CERROR("obd_" #op ": NULL export\n"); \
477 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
478 CERROR("obd_" #op ": cleaned up obd\n"); \
479 RETURN(-EOPNOTSUPP); \
481 if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
482 CERROR("obd_" #op ": dev %d no operation\n", \
483 (exp)->exp_obd->obd_minor); \
484 RETURN(-EOPNOTSUPP); \
488 #define CTXT_CHECK_OP(ctxt, op, err) \
490 if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) { \
492 CERROR("lop_" #op ": dev %d no operation\n", \
493 ctxt->loc_obd->obd_minor); \
498 static inline int class_devno_max(void)
500 return MAX_OBD_DEVICES;
503 static inline int obd_get_info(const struct lu_env *env,
504 struct obd_export *exp, __u32 keylen,
505 void *key, __u32 *vallen, void *val,
506 struct lov_stripe_md *lsm)
511 EXP_CHECK_DT_OP(exp, get_info);
512 EXP_COUNTER_INCREMENT(exp, get_info);
514 rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
519 static inline int obd_set_info_async(const struct lu_env *env,
520 struct obd_export *exp, obd_count keylen,
521 void *key, obd_count vallen, void *val,
522 struct ptlrpc_request_set *set)
527 EXP_CHECK_DT_OP(exp, set_info_async);
528 EXP_COUNTER_INCREMENT(exp, set_info_async);
530 rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
536 * obd-lu integration.
538 * Functionality is being moved into new lu_device-based layering, but some
539 * pieces of configuration process are still based on obd devices.
541 * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
542 * subsume ->o_setup() methods of obd devices they replace. The same for
543 * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
544 * result, obd_setup() and obd_process_config() branch and call one XOR
547 * Yet neither lu_device_type_operations::ldto_device_fini() nor
548 * lu_device_type_operations::ldto_device_free() fully implement the
549 * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
550 * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
553 #define DECLARE_LU_VARS(ldt, d) \
554 struct lu_device_type *ldt; \
557 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
560 DECLARE_LU_VARS(ldt, d);
563 ldt = obd->obd_type->typ_lu;
565 struct lu_context session_ctx;
567 lu_context_init(&session_ctx, LCT_SESSION | LCT_SERVER_SESSION);
568 session_ctx.lc_thread = NULL;
569 lu_context_enter(&session_ctx);
571 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
573 env.le_ses = &session_ctx;
574 d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
583 lu_context_exit(&session_ctx);
584 lu_context_fini(&session_ctx);
587 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
588 OBD_COUNTER_INCREMENT(obd, setup);
589 rc = OBP(obd, setup)(obd, cfg);
594 static inline int obd_precleanup(struct obd_device *obd,
595 enum obd_cleanup_stage cleanup_stage)
598 DECLARE_LU_VARS(ldt, d);
602 ldt = obd->obd_type->typ_lu;
604 if (ldt != NULL && d != NULL) {
605 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
608 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
610 ldt->ldt_ops->ldto_device_fini(&env, d);
615 OBD_CHECK_DT_OP(obd, precleanup, 0);
616 OBD_COUNTER_INCREMENT(obd, precleanup);
618 rc = OBP(obd, precleanup)(obd, cleanup_stage);
622 static inline int obd_cleanup(struct obd_device *obd)
625 DECLARE_LU_VARS(ldt, d);
630 ldt = obd->obd_type->typ_lu;
632 if (ldt != NULL && d != NULL) {
635 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
637 ldt->ldt_ops->ldto_device_free(&env, d);
639 obd->obd_lu_dev = NULL;
642 OBD_CHECK_DT_OP(obd, cleanup, 0);
643 OBD_COUNTER_INCREMENT(obd, cleanup);
645 rc = OBP(obd, cleanup)(obd);
649 static inline void obd_cleanup_client_import(struct obd_device *obd)
653 /* If we set up but never connected, the
654 client import will not have been cleaned. */
655 down_write(&obd->u.cli.cl_sem);
656 if (obd->u.cli.cl_import) {
657 struct obd_import *imp;
658 imp = obd->u.cli.cl_import;
659 CDEBUG(D_CONFIG, "%s: client import never connected\n",
661 ptlrpc_invalidate_import(imp);
662 if (imp->imp_rq_pool) {
663 ptlrpc_free_rq_pool(imp->imp_rq_pool);
664 imp->imp_rq_pool = NULL;
666 client_destroy_import(imp);
667 obd->u.cli.cl_import = NULL;
669 up_write(&obd->u.cli.cl_sem);
675 obd_process_config(struct obd_device *obd, int datalen, void *data)
678 DECLARE_LU_VARS(ldt, d);
683 obd->obd_process_conf = 1;
684 ldt = obd->obd_type->typ_lu;
686 if (ldt != NULL && d != NULL) {
689 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
691 rc = d->ld_ops->ldo_process_config(&env, d, data);
695 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
696 rc = OBP(obd, process_config)(obd, datalen, data);
698 OBD_COUNTER_INCREMENT(obd, process_config);
699 obd->obd_process_conf = 0;
704 /* Pack an in-memory MD struct for storage on disk.
705 * Returns +ve size of packed MD (0 for free), or -ve error.
707 * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
708 * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
709 * If @*disk_tgt == NULL, it will be allocated
711 static inline int obd_packmd(struct obd_export *exp,
712 struct lov_mds_md **disk_tgt,
713 struct lov_stripe_md *mem_src)
718 EXP_CHECK_DT_OP(exp, packmd);
719 EXP_COUNTER_INCREMENT(exp, packmd);
721 rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
725 static inline int obd_size_diskmd(struct obd_export *exp,
726 struct lov_stripe_md *mem_src)
728 return obd_packmd(exp, NULL, mem_src);
731 /* helper functions */
732 static inline int obd_alloc_diskmd(struct obd_export *exp,
733 struct lov_mds_md **disk_tgt)
736 LASSERT(*disk_tgt == NULL);
737 return obd_packmd(exp, disk_tgt, NULL);
740 static inline int obd_free_diskmd(struct obd_export *exp,
741 struct lov_mds_md **disk_tgt)
746 * LU-2590, for caller's convenience, *disk_tgt could be host
747 * endianness, it needs swab to LE if necessary, while just
748 * lov_mds_md header needs it for figuring out how much memory
751 if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
752 (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
753 ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
754 lustre_swab_lov_mds_md(*disk_tgt);
755 return obd_packmd(exp, disk_tgt, NULL);
758 /* Unpack an MD struct from disk to in-memory format.
759 * Returns +ve size of unpacked MD (0 for free), or -ve error.
761 * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
762 * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
763 * If @*mem_tgt == NULL, it will be allocated
765 static inline int obd_unpackmd(struct obd_export *exp,
766 struct lov_stripe_md **mem_tgt,
767 struct lov_mds_md *disk_src,
773 EXP_CHECK_DT_OP(exp, unpackmd);
774 EXP_COUNTER_INCREMENT(exp, unpackmd);
776 rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
780 /* helper functions */
781 static inline int obd_alloc_memmd(struct obd_export *exp,
782 struct lov_stripe_md **mem_tgt)
785 LASSERT(*mem_tgt == NULL);
786 return obd_unpackmd(exp, mem_tgt, NULL, 0);
789 static inline int obd_free_memmd(struct obd_export *exp,
790 struct lov_stripe_md **mem_tgt)
796 rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
801 static inline int obd_precreate(struct obd_export *exp)
806 EXP_CHECK_DT_OP(exp, precreate);
807 OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
809 rc = OBP(exp->exp_obd, precreate)(exp);
813 static inline int obd_create_async(struct obd_export *exp,
814 struct obd_info *oinfo,
815 struct lov_stripe_md **ea,
816 struct obd_trans_info *oti)
821 EXP_CHECK_DT_OP(exp, create_async);
822 EXP_COUNTER_INCREMENT(exp, create_async);
824 rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
828 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
829 struct obdo *obdo, struct lov_stripe_md **ea,
830 struct obd_trans_info *oti)
835 EXP_CHECK_DT_OP(exp, create);
836 EXP_COUNTER_INCREMENT(exp, create);
838 rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
842 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
843 struct obdo *obdo, struct lov_stripe_md *ea,
844 struct obd_trans_info *oti,
845 struct obd_export *md_exp, void *capa)
850 EXP_CHECK_DT_OP(exp, destroy);
851 EXP_COUNTER_INCREMENT(exp, destroy);
853 rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
857 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
858 struct obd_info *oinfo)
863 EXP_CHECK_DT_OP(exp, getattr);
864 EXP_COUNTER_INCREMENT(exp, getattr);
866 rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
870 static inline int obd_getattr_async(struct obd_export *exp,
871 struct obd_info *oinfo,
872 struct ptlrpc_request_set *set)
877 EXP_CHECK_DT_OP(exp, getattr_async);
878 EXP_COUNTER_INCREMENT(exp, getattr_async);
880 rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
884 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
885 struct obd_info *oinfo,
886 struct obd_trans_info *oti)
891 EXP_CHECK_DT_OP(exp, setattr);
892 EXP_COUNTER_INCREMENT(exp, setattr);
894 rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
898 /* This performs all the requests set init/wait/destroy actions. */
899 static inline int obd_setattr_rqset(struct obd_export *exp,
900 struct obd_info *oinfo,
901 struct obd_trans_info *oti)
903 struct ptlrpc_request_set *set = NULL;
907 EXP_CHECK_DT_OP(exp, setattr_async);
908 EXP_COUNTER_INCREMENT(exp, setattr_async);
910 set = ptlrpc_prep_set();
914 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
916 rc = ptlrpc_set_wait(set);
917 ptlrpc_set_destroy(set);
921 /* This adds all the requests into @set if @set != NULL, otherwise
922 all requests are sent asynchronously without waiting for response. */
923 static inline int obd_setattr_async(struct obd_export *exp,
924 struct obd_info *oinfo,
925 struct obd_trans_info *oti,
926 struct ptlrpc_request_set *set)
931 EXP_CHECK_DT_OP(exp, setattr_async);
932 EXP_COUNTER_INCREMENT(exp, setattr_async);
934 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
938 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
941 struct obd_device *obd = imp->imp_obd;
945 OBD_CHECK_DEV_ACTIVE(obd);
946 OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
947 OBD_COUNTER_INCREMENT(obd, add_conn);
949 rc = OBP(obd, add_conn)(imp, uuid, priority);
953 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
955 struct obd_device *obd = imp->imp_obd;
959 OBD_CHECK_DEV_ACTIVE(obd);
960 OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
961 OBD_COUNTER_INCREMENT(obd, del_conn);
963 rc = OBP(obd, del_conn)(imp, uuid);
967 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
969 struct obd_uuid *uuid;
972 OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
973 EXP_COUNTER_INCREMENT(exp, get_uuid);
975 uuid = OBP(exp->exp_obd, get_uuid)(exp);
979 /** Create a new /a exp on device /a obd for the uuid /a cluuid
980 * @param exp New export handle
981 * @param d Connect data, supported flags are set, flags also understood
982 * by obd are returned.
984 static inline int obd_connect(const struct lu_env *env,
985 struct obd_export **exp,struct obd_device *obd,
986 struct obd_uuid *cluuid,
987 struct obd_connect_data *data,
991 __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
995 OBD_CHECK_DEV_ACTIVE(obd);
996 OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
997 OBD_COUNTER_INCREMENT(obd, connect);
999 rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
1000 /* check that only subset is granted */
1001 LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
1002 data->ocd_connect_flags));
1006 static inline int obd_reconnect(const struct lu_env *env,
1007 struct obd_export *exp,
1008 struct obd_device *obd,
1009 struct obd_uuid *cluuid,
1010 struct obd_connect_data *d,
1014 __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
1019 OBD_CHECK_DEV_ACTIVE(obd);
1020 OBD_CHECK_DT_OP(obd, reconnect, 0);
1021 OBD_COUNTER_INCREMENT(obd, reconnect);
1023 rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
1024 /* check that only subset is granted */
1025 LASSERT(ergo(d != NULL,
1026 (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
1030 static inline int obd_disconnect(struct obd_export *exp)
1035 EXP_CHECK_DT_OP(exp, disconnect);
1036 EXP_COUNTER_INCREMENT(exp, disconnect);
1038 rc = OBP(exp->exp_obd, disconnect)(exp);
1042 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
1043 enum lu_cli_type type)
1048 OBD_CHECK_DT_OP(obd, fid_init, 0);
1049 OBD_COUNTER_INCREMENT(obd, fid_init);
1051 rc = OBP(obd, fid_init)(obd, exp, type);
1055 static inline int obd_fid_fini(struct obd_device *obd)
1060 OBD_CHECK_DT_OP(obd, fid_fini, 0);
1061 OBD_COUNTER_INCREMENT(obd, fid_fini);
1063 rc = OBP(obd, fid_fini)(obd);
1067 static inline int obd_fid_alloc(struct obd_export *exp,
1069 struct md_op_data *op_data)
1074 EXP_CHECK_DT_OP(exp, fid_alloc);
1075 EXP_COUNTER_INCREMENT(exp, fid_alloc);
1077 rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
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 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1193 * If the cache is older than @max_age we will get a new value from the
1194 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1195 static inline int obd_statfs_async(struct obd_export *exp,
1196 struct obd_info *oinfo,
1198 struct ptlrpc_request_set *rqset)
1201 struct obd_device *obd;
1204 if (exp == NULL || exp->exp_obd == NULL)
1208 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1209 OBD_COUNTER_INCREMENT(obd, statfs);
1211 CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1212 obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1213 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1214 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1216 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1217 " objects "LPU64"/"LPU64"\n",
1218 obd->obd_name, &obd->obd_osfs,
1219 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1220 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1221 spin_lock(&obd->obd_osfs_lock);
1222 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1223 spin_unlock(&obd->obd_osfs_lock);
1224 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1225 if (oinfo->oi_cb_up)
1226 oinfo->oi_cb_up(oinfo, 0);
1231 static inline int obd_statfs_rqset(struct obd_export *exp,
1232 struct obd_statfs *osfs, __u64 max_age,
1235 struct ptlrpc_request_set *set = NULL;
1236 struct obd_info oinfo = { { { 0 } } };
1240 set = ptlrpc_prep_set();
1244 oinfo.oi_osfs = osfs;
1245 oinfo.oi_flags = flags;
1246 rc = obd_statfs_async(exp, &oinfo, max_age, set);
1248 rc = ptlrpc_set_wait(set);
1249 ptlrpc_set_destroy(set);
1253 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1254 * If the cache is older than @max_age we will get a new value from the
1255 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1256 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1257 struct obd_statfs *osfs, __u64 max_age,
1261 struct obd_device *obd = exp->exp_obd;
1267 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1268 OBD_COUNTER_INCREMENT(obd, statfs);
1270 CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1271 obd->obd_osfs_age, max_age);
1272 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1273 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1275 spin_lock(&obd->obd_osfs_lock);
1276 memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1277 obd->obd_osfs_age = cfs_time_current_64();
1278 spin_unlock(&obd->obd_osfs_lock);
1281 CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
1282 " objects "LPU64"/"LPU64"\n",
1283 obd->obd_name, &obd->obd_osfs,
1284 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1285 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1286 spin_lock(&obd->obd_osfs_lock);
1287 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1288 spin_unlock(&obd->obd_osfs_lock);
1293 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
1294 obd_size start, obd_size end)
1296 struct ptlrpc_request_set *set = NULL;
1300 OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1301 EXP_COUNTER_INCREMENT(exp, sync);
1303 set = ptlrpc_prep_set();
1307 rc = OBP(exp->exp_obd, sync)(NULL, exp, oinfo, start, end, set);
1309 rc = ptlrpc_set_wait(set);
1310 ptlrpc_set_destroy(set);
1314 static inline int obd_sync(const struct lu_env *env, struct obd_export *exp,
1315 struct obd_info *oinfo, obd_size start, obd_size end,
1316 struct ptlrpc_request_set *set)
1321 OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1322 EXP_COUNTER_INCREMENT(exp, sync);
1324 rc = OBP(exp->exp_obd, sync)(env, exp, oinfo, start, end, set);
1328 static inline int obd_punch_rqset(struct obd_export *exp,
1329 struct obd_info *oinfo,
1330 struct obd_trans_info *oti)
1332 struct ptlrpc_request_set *set = NULL;
1336 EXP_CHECK_DT_OP(exp, punch);
1337 EXP_COUNTER_INCREMENT(exp, punch);
1339 set = ptlrpc_prep_set();
1343 rc = OBP(exp->exp_obd, punch)(NULL, exp, oinfo, oti, set);
1345 rc = ptlrpc_set_wait(set);
1346 ptlrpc_set_destroy(set);
1350 static inline int obd_punch(const struct lu_env *env, struct obd_export *exp,
1351 struct obd_info *oinfo, struct obd_trans_info *oti,
1352 struct ptlrpc_request_set *rqset)
1357 EXP_CHECK_DT_OP(exp, punch);
1358 EXP_COUNTER_INCREMENT(exp, punch);
1360 rc = OBP(exp->exp_obd, punch)(env, exp, oinfo, oti, rqset);
1364 static inline int obd_brw(int cmd, struct obd_export *exp,
1365 struct obd_info *oinfo, obd_count oa_bufs,
1366 struct brw_page *pg, struct obd_trans_info *oti)
1371 EXP_CHECK_DT_OP(exp, brw);
1372 EXP_COUNTER_INCREMENT(exp, brw);
1374 if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1375 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1376 "or OBD_BRW_CHECK\n");
1380 rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1384 static inline int obd_preprw(const struct lu_env *env, int cmd,
1385 struct obd_export *exp, struct obdo *oa,
1386 int objcount, struct obd_ioobj *obj,
1387 struct niobuf_remote *remote, int *pages,
1388 struct niobuf_local *local,
1389 struct obd_trans_info *oti,
1390 struct lustre_capa *capa)
1395 EXP_CHECK_DT_OP(exp, preprw);
1396 EXP_COUNTER_INCREMENT(exp, preprw);
1398 rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1399 pages, local, oti, capa);
1403 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1404 struct obd_export *exp, struct obdo *oa,
1405 int objcount, struct obd_ioobj *obj,
1406 struct niobuf_remote *rnb, int pages,
1407 struct niobuf_local *local,
1408 struct obd_trans_info *oti, int rc)
1412 EXP_CHECK_DT_OP(exp, commitrw);
1413 EXP_COUNTER_INCREMENT(exp, commitrw);
1415 rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1416 rnb, pages, local, oti, rc);
1420 static inline int obd_merge_lvb(struct obd_export *exp,
1421 struct lov_stripe_md *lsm,
1422 struct ost_lvb *lvb, int kms_only)
1427 EXP_CHECK_DT_OP(exp, merge_lvb);
1428 EXP_COUNTER_INCREMENT(exp, merge_lvb);
1430 rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1434 static inline int obd_adjust_kms(struct obd_export *exp,
1435 struct lov_stripe_md *lsm, obd_off size,
1441 EXP_CHECK_DT_OP(exp, adjust_kms);
1442 EXP_COUNTER_INCREMENT(exp, adjust_kms);
1444 rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1448 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1449 int len, void *karg, void *uarg)
1454 EXP_CHECK_DT_OP(exp, iocontrol);
1455 EXP_COUNTER_INCREMENT(exp, iocontrol);
1457 rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1461 static inline int obd_enqueue_rqset(struct obd_export *exp,
1462 struct obd_info *oinfo,
1463 struct ldlm_enqueue_info *einfo)
1465 struct ptlrpc_request_set *set = NULL;
1469 EXP_CHECK_DT_OP(exp, enqueue);
1470 EXP_COUNTER_INCREMENT(exp, enqueue);
1472 set = ptlrpc_prep_set();
1476 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1478 rc = ptlrpc_set_wait(set);
1479 ptlrpc_set_destroy(set);
1483 static inline int obd_enqueue(struct obd_export *exp,
1484 struct obd_info *oinfo,
1485 struct ldlm_enqueue_info *einfo,
1486 struct ptlrpc_request_set *set)
1491 EXP_CHECK_DT_OP(exp, enqueue);
1492 EXP_COUNTER_INCREMENT(exp, enqueue);
1494 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1498 static inline int obd_change_cbdata(struct obd_export *exp,
1499 struct lov_stripe_md *lsm,
1500 ldlm_iterator_t it, void *data)
1505 EXP_CHECK_DT_OP(exp, change_cbdata);
1506 EXP_COUNTER_INCREMENT(exp, change_cbdata);
1508 rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1512 static inline int obd_find_cbdata(struct obd_export *exp,
1513 struct lov_stripe_md *lsm,
1514 ldlm_iterator_t it, void *data)
1519 EXP_CHECK_DT_OP(exp, find_cbdata);
1520 EXP_COUNTER_INCREMENT(exp, find_cbdata);
1522 rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1526 static inline int obd_cancel(struct obd_export *exp,
1527 struct lov_stripe_md *ea, __u32 mode,
1528 struct lustre_handle *lockh)
1533 EXP_CHECK_DT_OP(exp, cancel);
1534 EXP_COUNTER_INCREMENT(exp, cancel);
1536 rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1540 static inline int obd_cancel_unused(struct obd_export *exp,
1541 struct lov_stripe_md *ea,
1542 ldlm_cancel_flags_t flags,
1548 EXP_CHECK_DT_OP(exp, cancel_unused);
1549 EXP_COUNTER_INCREMENT(exp, cancel_unused);
1551 rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1555 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1556 struct obd_capa *oc, struct obd_client_handle *handle,
1562 EXP_CHECK_DT_OP(exp, pin);
1563 EXP_COUNTER_INCREMENT(exp, pin);
1565 rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1569 static inline int obd_unpin(struct obd_export *exp,
1570 struct obd_client_handle *handle, int flag)
1575 EXP_CHECK_DT_OP(exp, unpin);
1576 EXP_COUNTER_INCREMENT(exp, unpin);
1578 rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1583 static inline void obd_import_event(struct obd_device *obd,
1584 struct obd_import *imp,
1585 enum obd_import_event event)
1589 CERROR("NULL device\n");
1593 if (obd->obd_set_up && OBP(obd, import_event)) {
1594 OBD_COUNTER_INCREMENT(obd, import_event);
1595 OBP(obd, import_event)(obd, imp, event);
1600 static inline int obd_llog_connect(struct obd_export *exp,
1601 struct llogd_conn_body *body)
1606 OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1607 EXP_COUNTER_INCREMENT(exp, llog_connect);
1609 rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1614 static inline int obd_notify(struct obd_device *obd,
1615 struct obd_device *watched,
1616 enum obd_notify_event ev,
1623 /* the check for async_recov is a complete hack - I'm hereby
1624 overloading the meaning to also mean "this was called from
1625 mds_postsetup". I know that my mds is able to handle notifies
1626 by this point, and it needs to get them to execute mds_postrecov. */
1627 if (!obd->obd_set_up && !obd->obd_async_recov) {
1628 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1632 if (!OBP(obd, notify)) {
1633 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1637 OBD_COUNTER_INCREMENT(obd, notify);
1638 rc = OBP(obd, notify)(obd, watched, ev, data);
1642 static inline int obd_notify_observer(struct obd_device *observer,
1643 struct obd_device *observed,
1644 enum obd_notify_event ev,
1650 struct obd_notify_upcall *onu;
1652 if (observer->obd_observer)
1653 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1657 * Also, call non-obd listener, if any
1659 onu = &observer->obd_upcall;
1660 if (onu->onu_upcall != NULL)
1661 rc2 = onu->onu_upcall(observer, observed, ev,
1662 onu->onu_owner, NULL);
1666 return rc1 ? rc1 : rc2;
1669 static inline int obd_quotacheck(struct obd_export *exp,
1670 struct obd_quotactl *oqctl)
1675 EXP_CHECK_DT_OP(exp, quotacheck);
1676 EXP_COUNTER_INCREMENT(exp, quotacheck);
1678 rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1682 static inline int obd_quotactl(struct obd_export *exp,
1683 struct obd_quotactl *oqctl)
1688 EXP_CHECK_DT_OP(exp, quotactl);
1689 EXP_COUNTER_INCREMENT(exp, quotactl);
1691 rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1695 static inline int obd_health_check(const struct lu_env *env,
1696 struct obd_device *obd)
1698 /* returns: 0 on healthy
1699 * >0 on unhealthy + reason code/flag
1700 * however the only suppored reason == 1 right now
1701 * We'll need to define some better reasons
1702 * or flags in the future.
1708 /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1709 if (obd == NULL || !OBT(obd)) {
1710 CERROR("cleaned up obd\n");
1711 RETURN(-EOPNOTSUPP);
1713 if (!obd->obd_set_up || obd->obd_stopping)
1715 if (!OBP(obd, health_check))
1718 rc = OBP(obd, health_check)(env, obd);
1722 static inline int obd_register_observer(struct obd_device *obd,
1723 struct obd_device *observer)
1727 down_write(&obd->obd_observer_link_sem);
1728 if (obd->obd_observer && observer) {
1729 up_write(&obd->obd_observer_link_sem);
1732 obd->obd_observer = observer;
1733 up_write(&obd->obd_observer_link_sem);
1737 static inline int obd_pin_observer(struct obd_device *obd,
1738 struct obd_device **observer)
1741 down_read(&obd->obd_observer_link_sem);
1742 if (!obd->obd_observer) {
1744 up_read(&obd->obd_observer_link_sem);
1747 *observer = obd->obd_observer;
1751 static inline int obd_unpin_observer(struct obd_device *obd)
1754 up_read(&obd->obd_observer_link_sem);
1759 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1760 obd_page_removal_cb_t cb,
1761 obd_pin_extent_cb pin_cb)
1766 OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1767 OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1769 rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1773 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1774 obd_page_removal_cb_t cb)
1779 OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1780 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1782 rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1786 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1787 obd_lock_cancel_cb cb)
1792 OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1793 OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1795 rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1799 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1800 obd_lock_cancel_cb cb)
1805 OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1806 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1808 rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1813 /* metadata helpers */
1814 static inline int md_getstatus(struct obd_export *exp,
1815 struct lu_fid *fid, struct obd_capa **pc)
1820 EXP_CHECK_MD_OP(exp, getstatus);
1821 EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1822 rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1826 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1827 struct ptlrpc_request **request)
1831 EXP_CHECK_MD_OP(exp, getattr);
1832 EXP_MD_COUNTER_INCREMENT(exp, getattr);
1833 rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1837 static inline int md_null_inode(struct obd_export *exp,
1838 const struct lu_fid *fid)
1842 EXP_CHECK_MD_OP(exp, null_inode);
1843 EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1844 rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1848 static inline int md_find_cbdata(struct obd_export *exp,
1849 const struct lu_fid *fid,
1850 ldlm_iterator_t it, void *data)
1854 EXP_CHECK_MD_OP(exp, find_cbdata);
1855 EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1856 rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1860 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1861 struct md_open_data *mod,
1862 struct ptlrpc_request **request)
1866 EXP_CHECK_MD_OP(exp, close);
1867 EXP_MD_COUNTER_INCREMENT(exp, close);
1868 rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1872 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1873 const void *data, int datalen, int mode, __u32 uid,
1874 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1875 struct ptlrpc_request **request)
1879 EXP_CHECK_MD_OP(exp, create);
1880 EXP_MD_COUNTER_INCREMENT(exp, create);
1881 rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1882 uid, gid, cap_effective, rdev, request);
1886 static inline int md_done_writing(struct obd_export *exp,
1887 struct md_op_data *op_data,
1888 struct md_open_data *mod)
1892 EXP_CHECK_MD_OP(exp, done_writing);
1893 EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1894 rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1898 static inline int md_enqueue(struct obd_export *exp,
1899 struct ldlm_enqueue_info *einfo,
1900 struct lookup_intent *it,
1901 struct md_op_data *op_data,
1902 struct lustre_handle *lockh,
1903 void *lmm, int lmmsize,
1904 struct ptlrpc_request **req,
1905 __u64 extra_lock_flags)
1909 EXP_CHECK_MD_OP(exp, enqueue);
1910 EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1911 rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1912 lmm, lmmsize, req, extra_lock_flags);
1916 static inline int md_getattr_name(struct obd_export *exp,
1917 struct md_op_data *op_data,
1918 struct ptlrpc_request **request)
1922 EXP_CHECK_MD_OP(exp, getattr_name);
1923 EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1924 rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1928 static inline int md_intent_lock(struct obd_export *exp,
1929 struct md_op_data *op_data, void *lmm,
1930 int lmmsize, struct lookup_intent *it,
1931 int lookup_flags, struct ptlrpc_request **reqp,
1932 ldlm_blocking_callback cb_blocking,
1933 __u64 extra_lock_flags)
1937 EXP_CHECK_MD_OP(exp, intent_lock);
1938 EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1939 rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1940 it, lookup_flags, reqp, cb_blocking,
1945 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1946 struct ptlrpc_request **request)
1950 EXP_CHECK_MD_OP(exp, link);
1951 EXP_MD_COUNTER_INCREMENT(exp, link);
1952 rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1956 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1957 const char *old, int oldlen, const char *new,
1958 int newlen, struct ptlrpc_request **request)
1962 EXP_CHECK_MD_OP(exp, rename);
1963 EXP_MD_COUNTER_INCREMENT(exp, rename);
1964 rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1969 static inline int md_is_subdir(struct obd_export *exp,
1970 const struct lu_fid *pfid,
1971 const struct lu_fid *cfid,
1972 struct ptlrpc_request **request)
1976 EXP_CHECK_MD_OP(exp, is_subdir);
1977 EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1978 rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1982 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1983 void *ea, int ealen, void *ea2, int ea2len,
1984 struct ptlrpc_request **request,
1985 struct md_open_data **mod)
1989 EXP_CHECK_MD_OP(exp, setattr);
1990 EXP_MD_COUNTER_INCREMENT(exp, setattr);
1991 rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1992 ea2, ea2len, request, mod);
1996 static inline int md_fsync(struct obd_export *exp, const struct lu_fid *fid,
1997 struct obd_capa *oc, struct ptlrpc_request **request)
2001 EXP_CHECK_MD_OP(exp, fsync);
2002 EXP_MD_COUNTER_INCREMENT(exp, fsync);
2003 rc = MDP(exp->exp_obd, fsync)(exp, fid, oc, request);
2007 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
2008 struct page **pages,
2009 struct ptlrpc_request **request)
2013 EXP_CHECK_MD_OP(exp, readpage);
2014 EXP_MD_COUNTER_INCREMENT(exp, readpage);
2015 rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
2019 static inline int md_read_entry(struct obd_export *exp,
2020 struct md_op_data *op_data,
2021 struct md_callback *cb_op,
2022 struct lu_dirent **ld,
2023 struct page **ppage)
2027 EXP_CHECK_MD_OP(exp, read_entry);
2028 EXP_MD_COUNTER_INCREMENT(exp, read_entry);
2029 rc = MDP(exp->exp_obd, read_entry)(exp, op_data, cb_op, ld, ppage);
2033 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2034 struct ptlrpc_request **request)
2038 EXP_CHECK_MD_OP(exp, unlink);
2039 EXP_MD_COUNTER_INCREMENT(exp, unlink);
2040 rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2044 static inline int md_get_lustre_md(struct obd_export *exp,
2045 struct ptlrpc_request *req,
2046 struct obd_export *dt_exp,
2047 struct obd_export *md_exp,
2048 struct lustre_md *md)
2051 EXP_CHECK_MD_OP(exp, get_lustre_md);
2052 EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2053 RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2056 static inline int md_free_lustre_md(struct obd_export *exp,
2057 struct lustre_md *md)
2060 EXP_CHECK_MD_OP(exp, free_lustre_md);
2061 EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2062 RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2065 static inline int md_setxattr(struct obd_export *exp,
2066 const struct lu_fid *fid, struct obd_capa *oc,
2067 obd_valid valid, const char *name,
2068 const char *input, int input_size,
2069 int output_size, int flags, __u32 suppgid,
2070 struct ptlrpc_request **request)
2073 EXP_CHECK_MD_OP(exp, setxattr);
2074 EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2075 RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2076 input_size, output_size, flags,
2080 static inline int md_getxattr(struct obd_export *exp,
2081 const struct lu_fid *fid, struct obd_capa *oc,
2082 obd_valid valid, const char *name,
2083 const char *input, int input_size,
2084 int output_size, int flags,
2085 struct ptlrpc_request **request)
2088 EXP_CHECK_MD_OP(exp, getxattr);
2089 EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2090 RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2091 input_size, output_size, flags,
2095 static inline int md_set_open_replay_data(struct obd_export *exp,
2096 struct obd_client_handle *och,
2097 struct lookup_intent *it)
2100 EXP_CHECK_MD_OP(exp, set_open_replay_data);
2101 EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2102 RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, it));
2105 static inline int md_clear_open_replay_data(struct obd_export *exp,
2106 struct obd_client_handle *och)
2109 EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2110 EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2111 RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2114 static inline int md_set_lock_data(struct obd_export *exp,
2115 __u64 *lockh, void *data, __u64 *bits)
2118 EXP_CHECK_MD_OP(exp, set_lock_data);
2119 EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2120 RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2123 static inline int md_cancel_unused(struct obd_export *exp,
2124 const struct lu_fid *fid,
2125 ldlm_policy_data_t *policy,
2127 ldlm_cancel_flags_t flags,
2133 EXP_CHECK_MD_OP(exp, cancel_unused);
2134 EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2136 rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2141 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
2142 const struct lu_fid *fid,
2144 ldlm_policy_data_t *policy,
2146 struct lustre_handle *lockh)
2149 EXP_CHECK_MD_OP(exp, lock_match);
2150 EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2151 RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2152 policy, mode, lockh));
2155 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2156 int def_asize, int cookiesize)
2159 EXP_CHECK_MD_OP(exp, init_ea_size);
2160 EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2161 RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2165 static inline int md_get_remote_perm(struct obd_export *exp,
2166 const struct lu_fid *fid,
2167 struct obd_capa *oc, __u32 suppgid,
2168 struct ptlrpc_request **request)
2171 EXP_CHECK_MD_OP(exp, get_remote_perm);
2172 EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2173 RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2177 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2182 EXP_CHECK_MD_OP(exp, renew_capa);
2183 EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2184 rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2188 static inline int md_unpack_capa(struct obd_export *exp,
2189 struct ptlrpc_request *req,
2190 const struct req_msg_field *field,
2191 struct obd_capa **oc)
2195 EXP_CHECK_MD_OP(exp, unpack_capa);
2196 EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2197 rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2201 static inline int md_intent_getattr_async(struct obd_export *exp,
2202 struct md_enqueue_info *minfo,
2203 struct ldlm_enqueue_info *einfo)
2207 EXP_CHECK_MD_OP(exp, intent_getattr_async);
2208 EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2209 rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2213 static inline int md_revalidate_lock(struct obd_export *exp,
2214 struct lookup_intent *it,
2215 struct lu_fid *fid, __u64 *bits)
2219 EXP_CHECK_MD_OP(exp, revalidate_lock);
2220 EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2221 rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2226 /* OBD Metadata Support */
2228 extern int obd_init_caches(void);
2229 extern void obd_cleanup_caches(void);
2231 /* support routines */
2232 extern struct kmem_cache *obdo_cachep;
2234 #define OBDO_ALLOC(ptr) \
2236 OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, __GFP_IO); \
2239 #define OBDO_FREE(ptr) \
2241 OBD_SLAB_FREE_PTR((ptr), obdo_cachep); \
2245 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2247 /* something here */
2250 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2252 /* something here */
2255 typedef int (*register_lwp_cb)(void *data);
2257 struct lwp_register_item {
2258 struct obd_export **lri_exp;
2259 register_lwp_cb lri_cb_func;
2261 cfs_list_t lri_list;
2262 char lri_name[MTI_NAME_MAXLEN];
2265 /* I'm as embarrassed about this as you are.
2267 * <shaver> // XXX do not look into _superhack with remaining eye
2268 * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2269 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2272 #ifdef HAVE_SERVER_SUPPORT
2273 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
2274 register_lwp_cb cb_func, void *cb_data);
2275 void lustre_deregister_lwp_item(struct obd_export **exp);
2276 struct obd_export *lustre_find_lwp_by_index(const char *dev, __u32 idx);
2277 int tgt_name2lwp_name(const char *tgt_name, char *lwp_name, int len, __u32 idx);
2278 #endif /* HAVE_SERVER_SUPPORT */
2281 extern void obd_sysctl_init (void);
2282 extern void obd_sysctl_clean (void);
2285 typedef __u8 class_uuid_t[16];
2286 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2289 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2290 int class_add_uuid(const char *uuid, __u64 nid);
2291 int class_del_uuid (const char *uuid);
2292 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
2293 void class_init_uuidlist(void);
2294 void class_exit_uuidlist(void);
2297 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2298 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2301 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2304 int server_name2index(const char *svname, __u32 *idx, const char **endptr);
2306 # define server_name2index(name, idx, ptr) do {} while (0)
2309 #endif /* __LINUX_OBD_CLASS_H */