1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001-2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <obd_support.h>
27 #include <lustre_import.h>
28 #include <lustre_net.h>
30 #include <lustre_lib.h>
31 #include <lustre/lustre_idl.h>
32 #include <lprocfs_status.h>
34 #if defined(__linux__)
35 #include <linux/obd_class.h>
36 #elif defined(__APPLE__)
37 #include <darwin/obd_class.h>
38 #elif defined(__WINNT__)
39 #include <winnt/obd_class.h>
41 #error Unsupported operating system.
44 /* OBD Device Declarations */
45 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
46 extern spinlock_t obd_dev_lock;
48 /* OBD Operations Declarations */
49 extern struct obd_device *class_conn2obd(struct lustre_handle *);
50 extern struct obd_device *class_exp2obd(struct obd_export *);
53 struct obd_export *class_conn2export(struct lustre_handle *);
54 int class_register_type(struct obd_ops *ops, struct lprocfs_vars *,
56 int class_unregister_type(const char *nm);
58 struct obd_device *class_newdev(const char *type_name, const char *name);
59 void class_release_dev(struct obd_device *obd);
61 int class_name2dev(const char *name);
62 struct obd_device *class_name2obd(const char *name);
63 int class_uuid2dev(struct obd_uuid *uuid);
64 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
65 void class_obd_list(void);
66 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
67 const char * typ_name,
68 struct obd_uuid *grp_uuid);
69 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
70 struct obd_uuid *grp_uuid);
71 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
73 struct obd_device * class_num2obd(int num);
75 int oig_init(struct obd_io_group **oig);
76 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
77 void oig_complete_one(struct obd_io_group *oig,
78 struct oig_callback_context *occ, int rc);
79 void oig_release(struct obd_io_group *oig);
80 int oig_wait(struct obd_io_group *oig);
82 char *obd_export_nid2str(struct obd_export *exp);
84 int obd_export_evict_by_nid(struct obd_device *obd, char *nid);
85 int obd_export_evict_by_uuid(struct obd_device *obd, char *uuid);
88 int class_process_config(struct lustre_cfg *lcfg);
89 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
90 struct lustre_cfg *lcfg, void *data);
91 int class_attach(struct lustre_cfg *lcfg);
92 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
93 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
94 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
95 struct obd_device *class_incref(struct obd_device *obd);
96 void class_decref(struct obd_device *obd);
98 #define CFG_F_START 0x01 /* Set when we start updating from a log */
99 #define CFG_F_MARKER 0x02 /* We are within a maker */
100 #define CFG_F_SKIP 0x04 /* We should ignore this cfg command */
101 #define CFG_F_COMPAT146 0x08 /* Allow old-style logs */
102 #define CFG_F_EXCLUDE 0x10 /* OST exclusion list */
104 /* Passed as data param to class_config_parse_llog */
105 struct config_llog_instance {
107 struct super_block *cfg_sb;
108 struct obd_uuid cfg_uuid;
109 int cfg_last_idx; /* for partial llog processing */
112 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
113 struct config_llog_instance *cfg);
114 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
115 struct config_llog_instance *cfg);
117 /* list of active configuration logs */
118 struct config_llog_data {
120 struct ldlm_res_id cld_resid;
121 struct config_llog_instance cld_cfg;
122 struct list_head cld_list_chain;
123 atomic_t cld_refcount;
124 struct obd_export *cld_mgcexp;
125 unsigned int cld_stopping:1; /* we were told to stop watching */
126 unsigned int cld_lostlock:1; /* lock not requeued */
129 struct lustre_profile {
130 struct list_head lp_list;
136 struct lustre_profile *class_get_profile(char * prof);
137 void class_del_profile(char *prof);
138 void class_del_profiles(void);
140 #define class_export_rpc_get(exp) \
142 atomic_inc(&(exp)->exp_rpc_count); \
143 CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n", \
144 (exp), atomic_read(&(exp)->exp_rpc_count)); \
145 class_export_get(exp); \
148 #define class_export_rpc_put(exp) \
150 atomic_dec(&(exp)->exp_rpc_count); \
151 CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n", \
152 (exp), atomic_read(&(exp)->exp_rpc_count)); \
153 class_export_put(exp); \
157 #define class_export_get(exp) \
159 struct obd_export *exp_ = exp; \
160 atomic_inc(&exp_->exp_refcount); \
161 CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_, \
162 atomic_read(&exp_->exp_refcount)); \
166 #define class_export_put(exp) \
168 LASSERT((exp) != NULL); \
169 CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp), \
170 atomic_read(&(exp)->exp_refcount) - 1); \
171 LASSERT(atomic_read(&(exp)->exp_refcount) > 0); \
172 LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a); \
173 __class_export_put(exp); \
176 void __class_export_put(struct obd_export *);
177 struct obd_export *class_new_export(struct obd_device *obddev,
178 struct obd_uuid *cluuid);
179 void class_unlink_export(struct obd_export *exp);
181 struct obd_import *class_import_get(struct obd_import *);
182 void class_import_put(struct obd_import *);
183 struct obd_import *class_new_import(struct obd_device *obd);
184 void class_destroy_import(struct obd_import *exp);
186 struct obd_type *class_search_type(const char *name);
187 struct obd_type *class_get_type(const char *name);
188 void class_put_type(struct obd_type *type);
189 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
190 struct obd_uuid *cluuid);
191 int class_disconnect(struct obd_export *exp);
192 void class_fail_export(struct obd_export *exp);
193 void class_disconnect_exports(struct obd_device *obddev);
194 void class_disconnect_stale_exports(struct obd_device *obddev);
195 int class_manual_cleanup(struct obd_device *obd);
198 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
199 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
202 #define OBT(dev) (dev)->obd_type
203 #define OBP(dev, op) (dev)->obd_type->typ_ops->o_ ## op
204 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
206 /* Ensure obd_setup: used for cleanup which must be called
207 while obd is stopping */
208 #define OBD_CHECK_DEV(obd) \
211 CERROR("NULL device\n"); \
216 /* ensure obd_setup and !obd_stopping */
217 #define OBD_CHECK_DEV_ACTIVE(obd) \
219 OBD_CHECK_DEV(obd); \
220 if (!(obd)->obd_set_up || (obd)->obd_stopping) { \
221 CERROR("Device %d not setup\n", \
229 #define OBD_COUNTER_OFFSET(op) \
230 ((offsetof(struct obd_ops, o_ ## op) - \
231 offsetof(struct obd_ops, o_iocontrol)) \
232 / sizeof(((struct obd_ops *)(0))->o_iocontrol))
234 #define OBD_COUNTER_INCREMENT(obdx, op) \
235 if ((obdx)->obd_stats != NULL) { \
236 unsigned int coffset; \
237 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
238 OBD_COUNTER_OFFSET(op); \
239 LASSERT(coffset < (obdx)->obd_stats->ls_num); \
240 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
243 #define EXP_COUNTER_INCREMENT(export, op) \
244 if ((export)->exp_obd->obd_stats != NULL) { \
245 unsigned int coffset; \
246 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
247 OBD_COUNTER_OFFSET(op); \
248 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num); \
249 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
250 if ((export)->exp_ops_stats != NULL) \
251 lprocfs_counter_incr( \
252 (export)->exp_ops_stats, coffset); \
256 #define OBD_COUNTER_OFFSET(op)
257 #define OBD_COUNTER_INCREMENT(obd, op)
258 #define EXP_COUNTER_INCREMENT(exp, op);
261 #define OBD_CHECK_OP(obd, op, err) \
263 if (!OBT(obd) || !OBP((obd), op)) {\
265 CERROR("obd_" #op ": dev %d no operation\n", \
271 #define EXP_CHECK_OP(exp, op) \
273 if ((exp) == NULL) { \
274 CERROR("obd_" #op ": NULL export\n"); \
277 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
278 CERROR("obd_" #op ": cleaned up obd\n"); \
279 RETURN(-EOPNOTSUPP); \
281 if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
282 CERROR("obd_" #op ": dev %d no operation\n", \
283 (exp)->exp_obd->obd_minor); \
284 RETURN(-EOPNOTSUPP); \
288 #define CTXT_CHECK_OP(ctxt, op, err) \
290 if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) { \
292 CERROR("lop_" #op ": dev %d no operation\n", \
293 ctxt->loc_obd->obd_minor); \
298 static inline int class_devno_max(void)
300 return MAX_OBD_DEVICES;
303 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
304 void *key, __u32 *vallen, void *val)
309 EXP_CHECK_OP(exp, get_info);
310 EXP_COUNTER_INCREMENT(exp, get_info);
312 rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
316 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
317 void *key, obd_count vallen, void *val,
318 struct ptlrpc_request_set *set)
323 EXP_CHECK_OP(exp, set_info_async);
324 EXP_COUNTER_INCREMENT(exp, set_info_async);
326 rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
331 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
336 OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
337 OBD_COUNTER_INCREMENT(obd, setup);
339 rc = OBP(obd, setup)(obd, datalen, data);
343 static inline int obd_precleanup(struct obd_device *obd,
344 enum obd_cleanup_stage cleanup_stage)
349 OBD_CHECK_OP(obd, precleanup, 0);
350 OBD_COUNTER_INCREMENT(obd, precleanup);
352 rc = OBP(obd, precleanup)(obd, cleanup_stage);
356 static inline int obd_cleanup(struct obd_device *obd)
362 OBD_CHECK_OP(obd, cleanup, 0);
363 OBD_COUNTER_INCREMENT(obd, cleanup);
365 rc = OBP(obd, cleanup)(obd);
370 obd_process_config(struct obd_device *obd, int datalen, void *data)
375 OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
376 OBD_COUNTER_INCREMENT(obd, process_config);
378 rc = OBP(obd, process_config)(obd, datalen, data);
382 /* Pack an in-memory MD struct for storage on disk.
383 * Returns +ve size of packed MD (0 for free), or -ve error.
385 * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
386 * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
387 * If @*disk_tgt == NULL, it will be allocated
389 static inline int obd_packmd(struct obd_export *exp,
390 struct lov_mds_md **disk_tgt,
391 struct lov_stripe_md *mem_src)
396 EXP_CHECK_OP(exp, packmd);
397 EXP_COUNTER_INCREMENT(exp, packmd);
399 rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
403 static inline int obd_size_diskmd(struct obd_export *exp,
404 struct lov_stripe_md *mem_src)
406 return obd_packmd(exp, NULL, mem_src);
409 /* helper functions */
410 static inline int obd_alloc_diskmd(struct obd_export *exp,
411 struct lov_mds_md **disk_tgt)
414 LASSERT(*disk_tgt == NULL);
415 return obd_packmd(exp, disk_tgt, NULL);
418 static inline int obd_free_diskmd(struct obd_export *exp,
419 struct lov_mds_md **disk_tgt)
423 return obd_packmd(exp, disk_tgt, NULL);
426 /* Unpack an MD struct from disk to in-memory format.
427 * Returns +ve size of unpacked MD (0 for free), or -ve error.
429 * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
430 * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
431 * If @*mem_tgt == NULL, it will be allocated
433 static inline int obd_unpackmd(struct obd_export *exp,
434 struct lov_stripe_md **mem_tgt,
435 struct lov_mds_md *disk_src,
441 EXP_CHECK_OP(exp, unpackmd);
442 EXP_COUNTER_INCREMENT(exp, unpackmd);
444 rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
448 /* helper functions */
449 static inline int obd_alloc_memmd(struct obd_export *exp,
450 struct lov_stripe_md **mem_tgt)
453 LASSERT(*mem_tgt == NULL);
454 return obd_unpackmd(exp, mem_tgt, NULL, 0);
457 static inline int obd_free_memmd(struct obd_export *exp,
458 struct lov_stripe_md **mem_tgt)
462 return obd_unpackmd(exp, mem_tgt, NULL, 0);
465 static inline int obd_checkmd(struct obd_export *exp,
466 struct obd_export *md_exp,
467 struct lov_stripe_md *mem_tgt)
472 EXP_CHECK_OP(exp, checkmd);
473 EXP_COUNTER_INCREMENT(exp, checkmd);
475 rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
479 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
480 struct lov_stripe_md **ea,
481 struct obd_trans_info *oti)
486 EXP_CHECK_OP(exp, create);
487 EXP_COUNTER_INCREMENT(exp, create);
489 rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
493 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
494 struct lov_stripe_md *ea,
495 struct obd_trans_info *oti,
496 struct obd_export *md_exp)
501 EXP_CHECK_OP(exp, destroy);
502 EXP_COUNTER_INCREMENT(exp, destroy);
504 rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
508 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
513 EXP_CHECK_OP(exp, getattr);
514 EXP_COUNTER_INCREMENT(exp, getattr);
516 rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
520 static inline int obd_getattr_async(struct obd_export *exp,
521 struct obd_info *oinfo,
522 struct ptlrpc_request_set *set)
527 EXP_CHECK_OP(exp, getattr_async);
528 EXP_COUNTER_INCREMENT(exp, getattr_async);
530 rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
534 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
535 struct obd_trans_info *oti)
540 EXP_CHECK_OP(exp, setattr);
541 EXP_COUNTER_INCREMENT(exp, setattr);
543 rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
547 /* This performs all the requests set init/wait/destroy actions. */
548 static inline int obd_setattr_rqset(struct obd_export *exp,
549 struct obd_info *oinfo,
550 struct obd_trans_info *oti)
552 struct ptlrpc_request_set *set = NULL;
556 EXP_CHECK_OP(exp, setattr_async);
557 EXP_COUNTER_INCREMENT(exp, setattr_async);
559 set = ptlrpc_prep_set();
563 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
565 rc = ptlrpc_set_wait(set);
566 ptlrpc_set_destroy(set);
570 /* This adds all the requests into @set if @set != NULL, otherwise
571 all requests are sent asynchronously without waiting for response. */
572 static inline int obd_setattr_async(struct obd_export *exp,
573 struct obd_info *oinfo,
574 struct obd_trans_info *oti,
575 struct ptlrpc_request_set *set)
580 EXP_CHECK_OP(exp, setattr_async);
581 EXP_COUNTER_INCREMENT(exp, setattr_async);
583 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
587 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
590 struct obd_device *obd = imp->imp_obd;
594 OBD_CHECK_DEV_ACTIVE(obd);
595 OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
596 OBD_COUNTER_INCREMENT(obd, add_conn);
598 rc = OBP(obd, add_conn)(imp, uuid, priority);
602 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
604 struct obd_device *obd = imp->imp_obd;
608 OBD_CHECK_DEV_ACTIVE(obd);
609 OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
610 OBD_COUNTER_INCREMENT(obd, del_conn);
612 rc = OBP(obd, del_conn)(imp, uuid);
616 static inline int obd_connect(struct lustre_handle *conn,struct obd_device *obd,
617 struct obd_uuid *cluuid,
618 struct obd_connect_data *d)
621 __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
624 OBD_CHECK_DEV_ACTIVE(obd);
625 OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
626 OBD_COUNTER_INCREMENT(obd, connect);
628 rc = OBP(obd, connect)(conn, obd, cluuid, d);
629 /* check that only subset is granted */
630 LASSERT(ergo(d != NULL,
631 (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
635 static inline int obd_reconnect(struct obd_export *exp,
636 struct obd_device *obd,
637 struct obd_uuid *cluuid,
638 struct obd_connect_data *d)
641 __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
644 OBD_CHECK_DEV_ACTIVE(obd);
645 OBD_CHECK_OP(obd, reconnect, 0);
646 OBD_COUNTER_INCREMENT(obd, reconnect);
648 rc = OBP(obd, reconnect)(exp, obd, cluuid, d);
649 /* check that only subset is granted */
650 LASSERT(ergo(d != NULL,
651 (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
655 static inline int obd_disconnect(struct obd_export *exp)
660 EXP_CHECK_OP(exp, disconnect);
661 EXP_COUNTER_INCREMENT(exp, disconnect);
663 rc = OBP(exp->exp_obd, disconnect)(exp);
667 static inline int obd_ping(struct obd_export *exp)
672 OBD_CHECK_OP(exp->exp_obd, ping, 0);
673 EXP_COUNTER_INCREMENT(exp, ping);
675 rc = OBP(exp->exp_obd, ping)(exp);
679 static inline int obd_init_export(struct obd_export *exp)
684 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
685 OBP((exp)->exp_obd, init_export))
686 rc = OBP(exp->exp_obd, init_export)(exp);
690 static inline int obd_destroy_export(struct obd_export *exp)
693 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
694 OBP((exp)->exp_obd, destroy_export))
695 OBP(exp->exp_obd, destroy_export)(exp);
699 static inline int obd_extent_calc(struct obd_export *exp,
700 struct lov_stripe_md *md,
701 int cmd, obd_off *offset)
705 EXP_CHECK_OP(exp, extent_calc);
706 rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
710 static inline struct dentry *
711 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
713 LASSERT(exp->exp_obd);
715 return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
720 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
723 /* @max_age is the oldest time in jiffies that we accept using a cached data.
724 * If the cache is older than @max_age we will get a new value from the
725 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
726 static inline int obd_statfs_async(struct obd_device *obd,
727 struct obd_info *oinfo,
729 struct ptlrpc_request_set *rqset)
737 OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
738 OBD_COUNTER_INCREMENT(obd, statfs);
740 CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
741 obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
742 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
743 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
745 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
746 " objects "LPU64"/"LPU64"\n",
747 obd->obd_name, &obd->obd_osfs,
748 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
749 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
750 spin_lock(&obd->obd_osfs_lock);
751 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
752 spin_unlock(&obd->obd_osfs_lock);
754 oinfo->oi_cb_up(oinfo, 0);
759 static inline int obd_statfs_rqset(struct obd_device *obd,
760 struct obd_statfs *osfs, __u64 max_age)
762 struct ptlrpc_request_set *set = NULL;
763 struct obd_info oinfo = { { { 0 } } };
767 set = ptlrpc_prep_set();
771 oinfo.oi_osfs = osfs;
772 rc = obd_statfs_async(obd, &oinfo, max_age, set);
774 rc = ptlrpc_set_wait(set);
775 ptlrpc_set_destroy(set);
779 /* @max_age is the oldest time in jiffies that we accept using a cached data.
780 * If the cache is older than @max_age we will get a new value from the
781 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
782 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
791 OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
792 OBD_COUNTER_INCREMENT(obd, statfs);
794 CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
795 obd->obd_osfs_age, max_age);
796 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
797 rc = OBP(obd, statfs)(obd, osfs, max_age);
799 spin_lock(&obd->obd_osfs_lock);
800 memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
801 obd->obd_osfs_age = cfs_time_current_64();
802 spin_unlock(&obd->obd_osfs_lock);
805 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
806 " objects "LPU64"/"LPU64"\n",
807 obd->obd_name, &obd->obd_osfs,
808 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
809 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
810 spin_lock(&obd->obd_osfs_lock);
811 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
812 spin_unlock(&obd->obd_osfs_lock);
817 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
818 struct lov_stripe_md *ea, obd_size start,
824 OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
825 EXP_COUNTER_INCREMENT(exp, sync);
827 rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
831 static inline int obd_punch_rqset(struct obd_export *exp,
832 struct obd_info *oinfo,
833 struct obd_trans_info *oti)
835 struct ptlrpc_request_set *set = NULL;
839 EXP_CHECK_OP(exp, punch);
840 EXP_COUNTER_INCREMENT(exp, punch);
842 set = ptlrpc_prep_set();
846 rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
848 rc = ptlrpc_set_wait(set);
849 ptlrpc_set_destroy(set);
853 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
854 struct obd_trans_info *oti,
855 struct ptlrpc_request_set *rqset)
860 EXP_CHECK_OP(exp, punch);
861 EXP_COUNTER_INCREMENT(exp, punch);
863 rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
867 static inline int obd_brw(int cmd, struct obd_export *exp,
868 struct obd_info *oinfo, obd_count oa_bufs,
869 struct brw_page *pg, struct obd_trans_info *oti)
874 EXP_CHECK_OP(exp, brw);
875 EXP_COUNTER_INCREMENT(exp, brw);
877 if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
878 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
879 "or OBD_BRW_CHECK\n");
883 rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
887 static inline int obd_brw_async(int cmd, struct obd_export *exp,
888 struct obd_info *oinfo, obd_count oa_bufs,
889 struct brw_page *pg, struct obd_trans_info *oti,
890 struct ptlrpc_request_set *set)
895 EXP_CHECK_OP(exp, brw_async);
896 EXP_COUNTER_INCREMENT(exp, brw_async);
898 if (!(cmd & OBD_BRW_RWMASK)) {
899 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
903 rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
907 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
908 struct obdo *oa, struct lov_stripe_md *lsm,
909 obd_count oa_bufs, struct brw_page *pg,
910 struct obd_trans_info *oti)
912 struct ptlrpc_request_set *set = NULL;
913 struct obd_info oinfo = { { { 0 } } };
918 set = ptlrpc_prep_set();
922 set->set_countp = &nob;
926 rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
928 rc = ptlrpc_set_wait(set);
930 CERROR("error from callback: rc = %d\n", rc);
932 rc = atomic_read(&nob);
934 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
935 "error from obd_brw_async: rc = %d\n", rc);
937 ptlrpc_set_destroy(set);
941 static inline int obd_prep_async_page(struct obd_export *exp,
942 struct lov_stripe_md *lsm,
943 struct lov_oinfo *loi,
944 cfs_page_t *page, obd_off offset,
945 struct obd_async_page_ops *ops,
946 void *data, void **res)
951 OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
952 EXP_COUNTER_INCREMENT(exp, prep_async_page);
954 ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
959 static inline int obd_queue_async_io(struct obd_export *exp,
960 struct lov_stripe_md *lsm,
961 struct lov_oinfo *loi, void *cookie,
962 int cmd, obd_off off, int count,
963 obd_flag brw_flags, obd_flag async_flags)
968 OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
969 EXP_COUNTER_INCREMENT(exp, queue_async_io);
970 LASSERT(cmd & OBD_BRW_RWMASK);
972 rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
973 count, brw_flags, async_flags);
977 static inline int obd_set_async_flags(struct obd_export *exp,
978 struct lov_stripe_md *lsm,
979 struct lov_oinfo *loi, void *cookie,
980 obd_flag async_flags)
985 OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
986 EXP_COUNTER_INCREMENT(exp, set_async_flags);
988 rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
993 static inline int obd_queue_group_io(struct obd_export *exp,
994 struct lov_stripe_md *lsm,
995 struct lov_oinfo *loi,
996 struct obd_io_group *oig,
997 void *cookie, int cmd, obd_off off,
998 int count, obd_flag brw_flags,
999 obd_flag async_flags)
1004 OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
1005 EXP_COUNTER_INCREMENT(exp, queue_group_io);
1006 LASSERT(cmd & OBD_BRW_RWMASK);
1008 rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1009 cmd, off, count, brw_flags,
1014 static inline int obd_trigger_group_io(struct obd_export *exp,
1015 struct lov_stripe_md *lsm,
1016 struct lov_oinfo *loi,
1017 struct obd_io_group *oig)
1022 OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
1023 EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1025 rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1029 static inline int obd_teardown_async_page(struct obd_export *exp,
1030 struct lov_stripe_md *lsm,
1031 struct lov_oinfo *loi, void *cookie)
1036 OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
1037 EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1039 rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1043 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1044 int objcount, struct obd_ioobj *obj,
1045 int niocount, struct niobuf_remote *remote,
1046 struct niobuf_local *local,
1047 struct obd_trans_info *oti)
1052 OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
1053 EXP_COUNTER_INCREMENT(exp, preprw);
1055 rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1056 remote, local, oti);
1060 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1061 int objcount, struct obd_ioobj *obj,
1062 int niocount, struct niobuf_local *local,
1063 struct obd_trans_info *oti, int rc)
1067 OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
1068 EXP_COUNTER_INCREMENT(exp, commitrw);
1070 rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1075 static inline int obd_merge_lvb(struct obd_export *exp,
1076 struct lov_stripe_md *lsm,
1077 struct ost_lvb *lvb, int kms_only)
1082 OBD_CHECK_OP(exp->exp_obd, merge_lvb, -EOPNOTSUPP);
1083 EXP_COUNTER_INCREMENT(exp, merge_lvb);
1085 rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1089 static inline int obd_adjust_kms(struct obd_export *exp,
1090 struct lov_stripe_md *lsm, obd_off size,
1096 OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
1097 EXP_COUNTER_INCREMENT(exp, adjust_kms);
1099 rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1103 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1104 int len, void *karg, void *uarg)
1109 EXP_CHECK_OP(exp, iocontrol);
1110 EXP_COUNTER_INCREMENT(exp, iocontrol);
1112 rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1116 static inline int obd_enqueue_rqset(struct obd_export *exp,
1117 struct obd_info *oinfo,
1118 struct obd_enqueue_info *einfo)
1123 EXP_CHECK_OP(exp, enqueue);
1124 EXP_COUNTER_INCREMENT(exp, enqueue);
1126 einfo->ei_rqset = ptlrpc_prep_set();
1127 if (einfo->ei_rqset == NULL)
1130 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1132 rc = ptlrpc_set_wait(einfo->ei_rqset);
1133 ptlrpc_set_destroy(einfo->ei_rqset);
1134 einfo->ei_rqset = NULL;
1139 static inline int obd_enqueue(struct obd_export *exp,
1140 struct obd_info *oinfo,
1141 struct obd_enqueue_info *einfo)
1146 EXP_CHECK_OP(exp, enqueue);
1147 EXP_COUNTER_INCREMENT(exp, enqueue);
1149 rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1153 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1154 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1155 int *flags, void *data, struct lustre_handle *lockh)
1160 EXP_CHECK_OP(exp, match);
1161 EXP_COUNTER_INCREMENT(exp, match);
1163 rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1168 static inline int obd_change_cbdata(struct obd_export *exp,
1169 struct lov_stripe_md *lsm,
1170 ldlm_iterator_t it, void *data)
1175 EXP_CHECK_OP(exp, change_cbdata);
1176 EXP_COUNTER_INCREMENT(exp, change_cbdata);
1178 rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1182 static inline int obd_cancel(struct obd_export *exp,
1183 struct lov_stripe_md *ea, __u32 mode,
1184 struct lustre_handle *lockh)
1189 EXP_CHECK_OP(exp, cancel);
1190 EXP_COUNTER_INCREMENT(exp, cancel);
1192 rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1196 static inline int obd_cancel_unused(struct obd_export *exp,
1197 struct lov_stripe_md *ea, int flags,
1203 EXP_CHECK_OP(exp, cancel_unused);
1204 EXP_COUNTER_INCREMENT(exp, cancel_unused);
1206 rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1210 static inline int obd_join_lru(struct obd_export *exp,
1211 struct lov_stripe_md *ea, int join)
1216 EXP_CHECK_OP(exp, join_lru);
1217 EXP_COUNTER_INCREMENT(exp, join_lru);
1219 rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1223 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1224 int type, struct obd_client_handle *handle, int flag)
1229 EXP_CHECK_OP(exp, pin);
1230 EXP_COUNTER_INCREMENT(exp, pin);
1232 rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1236 static inline int obd_unpin(struct obd_export *exp,
1237 struct obd_client_handle *handle, int flag)
1242 EXP_CHECK_OP(exp, unpin);
1243 EXP_COUNTER_INCREMENT(exp, unpin);
1245 rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1250 static inline void obd_import_event(struct obd_device *obd,
1251 struct obd_import *imp,
1252 enum obd_import_event event)
1256 CERROR("NULL device\n");
1260 if (obd->obd_set_up && OBP(obd, import_event)) {
1261 OBD_COUNTER_INCREMENT(obd, import_event);
1262 OBP(obd, import_event)(obd, imp, event);
1267 static inline int obd_notify(struct obd_device *obd,
1268 struct obd_device *watched,
1269 enum obd_notify_event ev, void *data)
1274 /* the check for async_recov is a complete hack - I'm hereby
1275 overloading the meaning to also mean "this was called from
1276 mds_postsetup". I know that my mds is able to handle notifies
1277 by this point, and it needs to get them to execute mds_postrecov. */
1278 if (!obd->obd_set_up && !obd->obd_async_recov) {
1279 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1283 if (!OBP(obd, notify))
1286 OBD_COUNTER_INCREMENT(obd, notify);
1287 RETURN(OBP(obd, notify)(obd, watched, ev, data));
1290 static inline int obd_notify_observer(struct obd_device *observer,
1291 struct obd_device *observed,
1292 enum obd_notify_event ev, void *data)
1297 struct obd_notify_upcall *onu;
1299 if (observer->obd_observer)
1300 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1304 * Also, call non-obd listener, if any
1306 onu = &observer->obd_upcall;
1307 if (onu->onu_upcall != NULL)
1308 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1315 static inline int obd_quotacheck(struct obd_export *exp,
1316 struct obd_quotactl *oqctl)
1321 EXP_CHECK_OP(exp, quotacheck);
1322 EXP_COUNTER_INCREMENT(exp, quotacheck);
1324 rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1328 static inline int obd_quotactl(struct obd_export *exp,
1329 struct obd_quotactl *oqctl)
1334 EXP_CHECK_OP(exp, quotactl);
1335 EXP_COUNTER_INCREMENT(exp, quotactl);
1337 rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1341 static inline int obd_health_check(struct obd_device *obd)
1343 /* returns: 0 on healthy
1344 * >0 on unhealthy + reason code/flag
1345 * however the only suppored reason == 1 right now
1346 * We'll need to define some better reasons
1347 * or flags in the future.
1353 /* don't use EXP_CHECK_OP, because NULL method is normal here */
1354 if (obd == NULL || !OBT(obd)) {
1355 CERROR("cleaned up obd\n");
1356 RETURN(-EOPNOTSUPP);
1358 if (!obd->obd_set_up || obd->obd_stopping)
1360 if (!OBP(obd, health_check))
1363 rc = OBP(obd, health_check)(obd);
1367 static inline int obd_register_observer(struct obd_device *obd,
1368 struct obd_device *observer)
1372 if (obd->obd_observer && observer)
1374 obd->obd_observer = observer;
1378 /* OBD Metadata Support */
1380 extern int obd_init_caches(void);
1381 extern void obd_cleanup_caches(void);
1383 /* support routines */
1384 extern cfs_mem_cache_t *obdo_cachep;
1385 static inline struct obdo *obdo_alloc(void)
1389 OBD_SLAB_ALLOC(oa, obdo_cachep, CFS_ALLOC_STD, sizeof(*oa));
1394 static inline void obdo_free(struct obdo *oa)
1396 OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1399 /* I'm as embarrassed about this as you are.
1401 * <shaver> // XXX do not look into _superhack with remaining eye
1402 * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1403 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1406 extern void obd_sysctl_init (void);
1407 extern void obd_sysctl_clean (void);
1410 typedef __u8 class_uuid_t[16];
1411 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1414 int lustre_uuid_to_peer(char *uuid, lnet_nid_t *peer_nid, int index);
1415 int class_add_uuid(char *uuid, __u64 nid);
1416 int class_del_uuid (char *uuid);
1417 void class_init_uuidlist(void);
1418 void class_exit_uuidlist(void);
1421 void ll_generate_random_uuid(class_uuid_t uuid_out);
1423 #endif /* __LINUX_OBD_CLASS_H */