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.
23 #ifndef __LINUX_CLASS_OBD_H
24 #define __LINUX_CLASS_OBD_H
27 #include <sys/types.h>
28 #include <libcfs/list.h>
30 #include <asm/segment.h>
31 #include <asm/uaccess.h>
32 #include <linux/types.h>
34 #include <linux/time.h>
35 #include <linux/timer.h>
38 #include <linux/obd_support.h>
39 #include <linux/lustre_import.h>
40 #include <linux/lustre_net.h>
41 #include <linux/obd.h>
42 #include <linux/lustre_lib.h>
43 #include <linux/lustre_idl.h>
44 #include <linux/lprocfs_status.h>
45 #include <linux/lustre_log.h>
47 /* OBD Device Declarations */
48 #define MAX_OBD_DEVICES 256
49 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
50 extern spinlock_t obd_dev_lock;
52 /* OBD Operations Declarations */
53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
54 extern struct obd_device *class_exp2obd(struct obd_export *);
57 struct obd_export *class_conn2export(struct lustre_handle *);
58 int class_register_type(struct obd_ops *ops, struct md_ops *md_ops,
59 struct lprocfs_vars *, char *nm);
60 int class_unregister_type(char *nm);
62 struct obd_device *class_newdev(struct obd_type *type);
63 void class_release_dev(struct obd_device *obd);
65 int class_name2dev(char *name);
66 struct obd_device *class_name2obd(char *name);
67 int class_uuid2dev(struct obd_uuid *uuid);
68 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
69 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
71 struct obd_uuid *grp_uuid);
72 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
75 int oig_init(struct obd_io_group **oig);
76 void oig_add_one(struct obd_io_group *oig,
77 struct oig_callback_context *occ);
78 void oig_complete_one(struct obd_io_group *oig,
79 struct oig_callback_context *occ, int rc);
80 void oig_release(struct obd_io_group *oig);
81 int oig_wait(struct obd_io_group *oig);
84 int class_process_config(struct lustre_cfg *lcfg);
86 /* Passed as data param to class_config_parse_handler() */
87 struct config_llog_instance {
89 struct obd_uuid cfg_uuid;
90 ptl_nid_t cfg_local_nid;
93 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
94 struct config_llog_instance *cfg);
95 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
96 struct config_llog_instance *cfg);
98 struct lustre_profile {
99 struct list_head lp_list;
105 struct lustre_profile *class_get_profile(char * prof);
106 void class_del_profile(char *prof);
108 #define class_export_rpc_get(exp) \
110 atomic_inc(&(exp)->exp_rpc_count); \
111 CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n", \
112 (exp), atomic_read(&(exp)->exp_rpc_count)); \
113 class_export_get(exp); \
116 #define class_export_rpc_put(exp) \
118 atomic_dec(&(exp)->exp_rpc_count); \
119 CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n", \
120 (exp), atomic_read(&(exp)->exp_rpc_count)); \
121 class_export_put(exp); \
124 #define class_export_get(exp) \
126 struct obd_export *exp_ = exp; \
127 atomic_inc(&exp_->exp_refcount); \
128 CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_, \
129 atomic_read(&exp_->exp_refcount)); \
133 #define class_export_put(exp) \
135 LASSERT((exp) != NULL); \
136 CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp), \
137 atomic_read(&(exp)->exp_refcount) - 1); \
138 LASSERT(atomic_read(&(exp)->exp_refcount) > 0); \
139 LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a); \
140 __class_export_put(exp); \
143 void __class_export_put(struct obd_export *);
144 struct obd_export *class_new_export(struct obd_device *obddev);
145 void class_unlink_export(struct obd_export *exp);
147 struct obd_import *class_import_get(struct obd_import *);
148 void class_import_put(struct obd_import *);
149 struct obd_import *class_new_import(void);
150 void class_destroy_import(struct obd_import *exp);
152 struct obd_type *class_get_type(char *name);
153 void class_put_type(struct obd_type *type);
154 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
155 struct obd_uuid *cluuid);
156 int class_disconnect(struct obd_export *exp, unsigned long flags);
157 void class_disconnect_exports(struct obd_device *obddev, unsigned long flags);
158 void class_disconnect_stale_exports(struct obd_device *obddev, unsigned long flags);
160 /* generic operations shared by various OBD types */
161 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
162 int class_multi_cleanup(struct obd_device *obddev);
166 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
167 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
168 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
169 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
170 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
172 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
173 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
174 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
176 #define OBT(dev) (dev)->obd_type
177 #define OBP(dev, op) (dev)->obd_type->typ_ops->o_ ## op
178 #define MDP(dev, op) (dev)->obd_type->typ_md_ops->m_ ## op
179 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
181 /* Ensure obd_setup: used for cleanup which must be called
182 while obd is stopping */
183 #define OBD_CHECK_DEV(obd) \
186 CERROR("NULL device\n"); \
191 #define OBD_CHECK_DEV_STOPPING(obd) \
193 OBD_CHECK_DEV(obd); \
194 if (!(obd)->obd_set_up) { \
195 CERROR("Device %d not setup\n", \
200 if (!(obd)->obd_stopping) { \
201 CERROR("Device %d not stopping\n", \
207 /* ensure obd_setup and !obd_stopping */
208 #define OBD_CHECK_DEV_ACTIVE(obd) \
210 OBD_CHECK_DEV(obd); \
211 if (!(obd)->obd_set_up || (obd)->obd_stopping) { \
212 CERROR("Device %d not setup\n", \
220 #define OBD_COUNTER_OFFSET(op) \
221 ((offsetof(struct obd_ops, o_ ## op) - \
222 offsetof(struct obd_ops, o_iocontrol)) \
223 / sizeof(((struct obd_ops *)(0))->o_iocontrol))
225 #define OBD_COUNTER_INCREMENT(obd, op) \
226 if ((obd)->obd_stats != NULL) { \
227 unsigned int coffset; \
228 coffset = (unsigned int)(obd)->obd_cntr_base + \
229 OBD_COUNTER_OFFSET(op); \
230 LASSERT(coffset < (obd)->obd_stats->ls_num); \
231 lprocfs_counter_incr((obd)->obd_stats, coffset);\
234 #define MD_COUNTER_OFFSET(op) \
235 ((offsetof(struct md_ops, m_ ## op) - \
236 offsetof(struct md_ops, m_getstatus)) \
237 / sizeof(((struct md_ops *)(0))->m_getstatus))
239 #define MD_COUNTER_INCREMENT(obd, op) \
240 if ((obd)->md_stats != NULL) { \
241 unsigned int coffset; \
242 coffset = (unsigned int)(obd)->md_cntr_base + \
243 MD_COUNTER_OFFSET(op); \
244 LASSERT(coffset < (obd)->md_stats->ls_num); \
245 lprocfs_counter_incr((obd)->md_stats, coffset); \
249 #define OBD_COUNTER_OFFSET(op)
250 #define OBD_COUNTER_INCREMENT(obd, op)
251 #define MD_COUNTER_INCREMENT(obd, op)
254 #define OBD_CHECK_MD_OP(obd, op, err) \
256 if (!OBT(obd) || !MDP((obd), op)) {\
258 CERROR("md_" #op ": dev %s/%d no operation\n", \
259 obd->obd_name, obd->obd_minor); \
264 #define EXP_CHECK_MD_OP(exp, op) \
266 if ((exp) == NULL) { \
267 CERROR("obd_" #op ": NULL export\n"); \
268 portals_debug_dumplog(); \
271 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
272 CERROR("obd_" #op ": cleaned up obd\n"); \
273 RETURN(-EOPNOTSUPP); \
275 if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
276 CERROR("obd_" #op ": dev %s/%d no operation\n", \
277 (exp)->exp_obd->obd_name, \
278 (exp)->exp_obd->obd_minor); \
279 RETURN(-EOPNOTSUPP); \
283 #define OBD_CHECK_OP(obd, op, err) \
285 if (!OBT(obd) || !OBP((obd), op)) {\
287 CERROR("obd_" #op ": dev %s/%d no operation\n", \
288 obd->obd_name, obd->obd_minor); \
293 #define EXP_CHECK_OP(exp, op) \
295 if ((exp) == NULL) { \
296 CERROR("obd_" #op ": NULL export\n"); \
297 portals_debug_dumplog(); \
300 if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) { \
301 CERROR("obd_" #op ": cleaned up obd\n"); \
302 RETURN(-EOPNOTSUPP); \
304 if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
305 CERROR("obd_" #op ": dev %s/%d no operation\n", \
306 (exp)->exp_obd->obd_name, \
307 (exp)->exp_obd->obd_minor); \
308 RETURN(-EOPNOTSUPP); \
312 #define CTXT_CHECK_OP(ctxt, op, err) \
314 if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) { \
316 CERROR("lop_" #op ": dev %d no operation\n", \
317 ctxt->loc_obd->obd_minor); \
322 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
323 void *key, __u32 *vallen, void *val)
328 EXP_CHECK_OP(exp, get_info);
329 OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
331 rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
335 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
336 void *key, obd_count vallen, void *val)
341 EXP_CHECK_OP(exp, set_info);
342 OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
344 rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
348 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
353 OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
354 OBD_COUNTER_INCREMENT(obd, setup);
356 rc = OBP(obd, setup)(obd, datalen, data);
360 static inline int obd_precleanup(struct obd_device *obd, int flags)
365 OBD_CHECK_OP(obd, precleanup, 0);
366 OBD_COUNTER_INCREMENT(obd, precleanup);
368 rc = OBP(obd, precleanup)(obd, flags);
372 static inline int obd_cleanup(struct obd_device *obd, int flags)
377 OBD_CHECK_DEV_STOPPING(obd);
378 OBD_CHECK_OP(obd, cleanup, 0);
379 OBD_COUNTER_INCREMENT(obd, cleanup);
381 rc = OBP(obd, cleanup)(obd, flags);
386 obd_process_config(struct obd_device *obd, int datalen, void *data)
391 OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
392 OBD_COUNTER_INCREMENT(obd, process_config);
394 rc = OBP(obd, process_config)(obd, datalen, data);
398 /* Pack an in-memory MD struct for storage on disk.
399 * Returns +ve size of packed MD (0 for free), or -ve error.
401 * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
402 * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
403 * If @*disk_tgt == NULL, it will be allocated
405 static inline int obd_packmd(struct obd_export *exp,
406 struct lov_mds_md **disk_tgt,
407 struct lov_stripe_md *mem_src)
412 EXP_CHECK_OP(exp, packmd);
413 OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
415 rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
419 static inline int obd_size_diskmd(struct obd_export *exp,
420 struct lov_stripe_md *mem_src)
422 return obd_packmd(exp, NULL, mem_src);
425 /* helper functions */
426 static inline int obd_alloc_diskmd(struct obd_export *exp,
427 struct lov_mds_md **disk_tgt)
430 LASSERT(*disk_tgt == NULL);
431 return obd_packmd(exp, disk_tgt, NULL);
434 static inline int obd_free_diskmd(struct obd_export *exp,
435 struct lov_mds_md **disk_tgt)
439 return obd_packmd(exp, disk_tgt, NULL);
442 /* Unpack an MD struct from disk to in-memory format.
443 * Returns +ve size of unpacked MD (0 for free), or -ve error.
445 * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
446 * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
447 * If @*mem_tgt == NULL, it will be allocated
449 static inline int obd_unpackmd(struct obd_export *exp,
450 struct lov_stripe_md **mem_tgt,
451 struct lov_mds_md *disk_src,
457 EXP_CHECK_OP(exp, unpackmd);
458 OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
460 rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
464 /* helper functions */
465 static inline int obd_alloc_memmd(struct obd_export *exp,
466 struct lov_stripe_md **mem_tgt)
469 LASSERT(*mem_tgt == NULL);
470 return obd_unpackmd(exp, mem_tgt, NULL, 0);
473 static inline int obd_free_memmd(struct obd_export *exp,
474 struct lov_stripe_md **mem_tgt)
478 return obd_unpackmd(exp, mem_tgt, NULL, 0);
481 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
482 struct lov_stripe_md *ea,
483 struct obd_trans_info *oti)
488 EXP_CHECK_OP(exp, revalidate_md);
489 OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
491 rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
495 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
496 struct lov_stripe_md **ea,
497 struct obd_trans_info *oti)
502 EXP_CHECK_OP(exp, create);
503 OBD_COUNTER_INCREMENT(exp->exp_obd, create);
505 rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
509 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
510 struct lov_stripe_md *ea,
511 struct obd_trans_info *oti)
516 EXP_CHECK_OP(exp, destroy);
517 OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
519 rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
523 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
524 struct lov_stripe_md *ea)
529 EXP_CHECK_OP(exp, getattr);
530 OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
532 rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
536 static inline int obd_getattr_async(struct obd_export *exp,
537 struct obdo *obdo, struct lov_stripe_md *ea,
538 struct ptlrpc_request_set *set)
543 EXP_CHECK_OP(exp, getattr);
544 OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
546 rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
550 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
551 struct lov_stripe_md *ea,
552 struct obd_trans_info *oti)
557 EXP_CHECK_OP(exp, setattr);
558 OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
560 rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
563 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
566 struct obd_device *obd = imp->imp_obd;
570 OBD_CHECK_DEV_ACTIVE(obd);
571 OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
572 OBD_COUNTER_INCREMENT(obd, add_conn);
574 rc = OBP(obd, add_conn)(imp, uuid, priority);
578 static inline int obd_del_conn(struct obd_import *imp,
579 struct obd_uuid *uuid)
581 struct obd_device *obd = imp->imp_obd;
585 OBD_CHECK_DEV_ACTIVE(obd);
586 OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
587 OBD_COUNTER_INCREMENT(obd, del_conn);
589 rc = OBP(obd, del_conn)(imp, uuid);
594 static inline int obd_connect(struct lustre_handle *conn,
595 struct obd_device *obd,
596 struct obd_uuid *cluuid,
602 OBD_CHECK_DEV_ACTIVE(obd);
603 OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
604 OBD_COUNTER_INCREMENT(obd, connect);
606 rc = OBP(obd, connect)(conn, obd, cluuid, flags);
610 static inline int obd_connect_post(struct obd_export *exp,
616 OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
617 if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
619 OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
620 rc = OBP(exp->exp_obd, connect_post)(exp, flags);
624 static inline int obd_disconnect(struct obd_export *exp,
630 EXP_CHECK_OP(exp, disconnect);
631 OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
633 rc = OBP(exp->exp_obd, disconnect)(exp, flags);
637 static inline int obd_getready(struct obd_export *exp)
642 if (!OBP(exp->exp_obd, getready))
644 rc = OBP(exp->exp_obd, getready)(exp);
648 static inline int obd_init_export(struct obd_export *exp)
653 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
654 OBP((exp)->exp_obd, init_export))
655 rc = OBP(exp->exp_obd, init_export)(exp);
659 static inline int obd_destroy_export(struct obd_export *exp)
662 if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
663 OBP((exp)->exp_obd, destroy_export))
664 OBP(exp->exp_obd, destroy_export)(exp);
668 static inline struct dentry *
669 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
672 LASSERT(exp->exp_obd);
674 return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
675 ino, gen, gr, exp->exp_obd);
679 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
682 /* @max_age is the oldest time in jiffies that we accept using a cached data.
683 * If the cache is older than @max_age we will get a new value from the
684 * target. Use a value of "jiffies + HZ" to guarantee freshness. */
685 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
686 unsigned long max_age)
694 OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
695 OBD_COUNTER_INCREMENT(obd, statfs);
697 CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
698 if (time_before(obd->obd_osfs_age, max_age)) {
699 rc = OBP(obd, statfs)(obd, osfs, max_age);
701 spin_lock(&obd->obd_osfs_lock);
702 memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
703 obd->obd_osfs_age = jiffies;
704 spin_unlock(&obd->obd_osfs_lock);
707 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
708 spin_lock(&obd->obd_osfs_lock);
709 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
710 spin_unlock(&obd->obd_osfs_lock);
715 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
716 struct lov_stripe_md *ea, obd_size start,
722 OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
723 OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
725 rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
729 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
730 struct lov_stripe_md *ea, obd_size start,
731 obd_size end, struct obd_trans_info *oti)
736 EXP_CHECK_OP(exp, punch);
737 OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
739 rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
743 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
744 struct lov_stripe_md *ea, obd_count oa_bufs,
745 struct brw_page *pg, struct obd_trans_info *oti)
750 EXP_CHECK_OP(exp, brw);
751 OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
753 if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
754 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
755 "or OBD_BRW_CHECK\n");
759 rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
763 static inline int obd_brw_async(int cmd, struct obd_export *exp,
764 struct obdo *oa, struct lov_stripe_md *ea,
765 obd_count oa_bufs, struct brw_page *pg,
766 struct ptlrpc_request_set *set,
767 struct obd_trans_info *oti)
772 EXP_CHECK_OP(exp, brw_async);
773 OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
775 if (!(cmd & OBD_BRW_RWMASK)) {
776 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
780 rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
785 static inline int obd_prep_async_page(struct obd_export *exp,
786 struct lov_stripe_md *lsm,
787 struct lov_oinfo *loi,
788 struct page *page, obd_off offset,
789 struct obd_async_page_ops *ops,
790 void *data, void **res)
795 OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
796 OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
798 ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
803 static inline int obd_queue_async_io(struct obd_export *exp,
804 struct lov_stripe_md *lsm,
805 struct lov_oinfo *loi, void *cookie,
806 int cmd, obd_off off, int count,
807 obd_flags brw_flags, obd_flags async_flags)
812 OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
813 OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
814 LASSERT(cmd & OBD_BRW_RWMASK);
816 rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
817 count, brw_flags, async_flags);
821 static inline int obd_set_async_flags(struct obd_export *exp,
822 struct lov_stripe_md *lsm,
823 struct lov_oinfo *loi, void *cookie,
824 obd_flags async_flags)
829 OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
830 OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
832 rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
837 static inline int obd_queue_group_io(struct obd_export *exp,
838 struct lov_stripe_md *lsm,
839 struct lov_oinfo *loi,
840 struct obd_io_group *oig,
841 void *cookie, int cmd, obd_off off,
842 int count, obd_flags brw_flags,
843 obd_flags async_flags)
848 OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
849 OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
850 LASSERT(cmd & OBD_BRW_RWMASK);
852 rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
853 cmd, off, count, brw_flags,
858 static inline int obd_trigger_group_io(struct obd_export *exp,
859 struct lov_stripe_md *lsm,
860 struct lov_oinfo *loi,
861 struct obd_io_group *oig)
866 OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
867 OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
869 rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
873 static inline int obd_teardown_async_page(struct obd_export *exp,
874 struct lov_stripe_md *lsm,
875 struct lov_oinfo *loi, void *cookie)
880 OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
881 OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
883 rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
887 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
888 int objcount, struct obd_ioobj *obj,
889 int niocount, struct niobuf_remote *remote,
890 struct niobuf_local *local,
891 struct obd_trans_info *oti)
896 OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
897 OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
899 rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
904 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
905 int objcount, struct obd_ioobj *obj,
906 int niocount, struct niobuf_local *local,
907 struct obd_trans_info *oti, int rc)
911 OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
912 OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
914 rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
919 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
920 int objcount,struct niobuf_remote *rnb)
925 /* there are cases when write_extents is not implemented. */
926 if (!OBP(exp->exp_obd, do_cow))
929 OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
931 rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
936 static inline int obd_write_extents(struct obd_export *exp,
937 struct obd_ioobj *obj,
938 int objcount, int niocount,
939 struct niobuf_local *local,
944 /* there are cases when write_extents is not implemented. */
945 if (!OBP(exp->exp_obd, write_extents))
948 OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
950 rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
955 static inline int obd_adjust_kms(struct obd_export *exp,
956 struct lov_stripe_md *lsm,
957 obd_off size, int shrink)
962 OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
963 OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
965 rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
969 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
970 int len, void *karg, void *uarg)
975 EXP_CHECK_OP(exp, iocontrol);
976 OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
978 rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
982 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
983 __u32 type, ldlm_policy_data_t *policy,
984 __u32 mode, int *flags, void *bl_cb, void *cp_cb,
985 void *gl_cb, void *data, __u32 lvb_len,
986 void *lvb_swabber, struct lustre_handle *lockh)
991 EXP_CHECK_OP(exp, enqueue);
992 OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
994 rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
995 bl_cb, cp_cb, gl_cb, data, lvb_len,
1000 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1001 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1002 int *flags, void *data, struct lustre_handle *lockh)
1007 EXP_CHECK_OP(exp, match);
1008 OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1010 rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1015 static inline int obd_change_cbdata(struct obd_export *exp,
1016 struct lov_stripe_md *lsm,
1017 ldlm_iterator_t it, void *data)
1022 EXP_CHECK_OP(exp, change_cbdata);
1023 OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1025 rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1029 static inline int obd_cancel(struct obd_export *exp,
1030 struct lov_stripe_md *ea, __u32 mode,
1031 struct lustre_handle *lockh)
1036 EXP_CHECK_OP(exp, cancel);
1037 OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1039 rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1043 static inline int obd_cancel_unused(struct obd_export *exp,
1044 struct lov_stripe_md *ea, int flags,
1050 EXP_CHECK_OP(exp, cancel_unused);
1051 OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1053 rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1058 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1060 int objcount, struct obd_ioobj *obj,
1061 int niocount, struct niobuf_remote *remote)
1065 EXP_CHECK_OP(exp, preprw);
1066 OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1068 rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1070 class_export_put(exp);
1074 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1075 int type, struct obd_client_handle *handle, int flag)
1079 EXP_CHECK_OP(exp, pin);
1080 OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1082 rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1086 static inline int obd_unpin(struct obd_export *exp,
1087 struct obd_client_handle *handle, int flag)
1091 EXP_CHECK_OP(exp, unpin);
1092 OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1094 rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1099 static inline void obd_import_event(struct obd_device *obd,
1100 struct obd_import *imp,
1101 enum obd_import_event event)
1104 CERROR("NULL device\n");
1108 if (obd->obd_set_up && OBP(obd, import_event)) {
1109 OBD_COUNTER_INCREMENT(obd, import_event);
1110 OBP(obd, import_event)(obd, imp, event);
1114 static inline int obd_llog_connect(struct obd_export *exp,
1115 struct llogd_conn_body *body)
1118 EXP_CHECK_OP(exp, llog_connect);
1119 return OBP(exp->exp_obd, llog_connect)(exp, body);
1122 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1123 int active, void *data)
1126 if (!obd->obd_set_up) {
1127 CERROR("obd %s not set up\n", obd->obd_name);
1131 if (!OBP(obd, notify)) {
1132 CERROR("obd %s has no notify handler\n", obd->obd_name);
1136 OBD_COUNTER_INCREMENT(obd, notify);
1137 return OBP(obd, notify)(obd, watched, active, data);
1140 static inline int obd_register_observer(struct obd_device *obd,
1141 struct obd_device *observer)
1145 if (obd->obd_observer && observer)
1147 obd->obd_observer = observer;
1151 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1155 LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1156 OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1157 rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1161 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1165 EXP_CHECK_MD_OP(exp, getstatus);
1166 MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1167 rc = MDP(exp->exp_obd, getstatus)(exp, id);
1171 static inline int md_delete_inode(struct obd_export *exp,
1172 struct lustre_id *id)
1177 if (MDP(exp->exp_obd, delete_inode) == NULL)
1180 MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1181 rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1185 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1186 __u64 valid, const char *ea_name, int ea_namelen,
1187 unsigned int ea_size, struct ptlrpc_request **request)
1191 EXP_CHECK_MD_OP(exp, getattr);
1192 MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1193 rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_name, ea_namelen, ea_size, request);
1197 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1198 ldlm_iterator_t it, void *data)
1202 EXP_CHECK_MD_OP(exp, change_cbdata);
1203 MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1204 rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1208 static inline int md_change_cbdata_name(struct obd_export *exp,
1209 struct lustre_id *id, char *name,
1210 int namelen, struct lustre_id *id2,
1211 ldlm_iterator_t it, void *data)
1215 /* this seem to be needed only for lmv. */
1216 if (!MDP(exp->exp_obd, change_cbdata_name))
1221 MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1222 rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1227 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1228 struct obd_client_handle *och,
1229 struct ptlrpc_request **request)
1233 EXP_CHECK_MD_OP(exp, close);
1234 MD_COUNTER_INCREMENT(exp->exp_obd, close);
1235 rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1239 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1240 const void *data, int datalen, int mode,
1241 __u32 uid, __u32 gid, __u64 rdev,
1242 struct ptlrpc_request **request)
1246 EXP_CHECK_MD_OP(exp, create);
1247 MD_COUNTER_INCREMENT(exp->exp_obd, create);
1248 rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1249 uid, gid, rdev, request);
1253 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1257 EXP_CHECK_MD_OP(exp, done_writing);
1258 MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1259 rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1263 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1264 struct lookup_intent *it, int lock_mode,
1265 struct mdc_op_data *data,
1266 struct lustre_handle *lockh,
1267 void *lmm, int lmmsize,
1268 ldlm_completion_callback cb_completion,
1269 ldlm_blocking_callback cb_blocking,
1274 EXP_CHECK_MD_OP(exp, enqueue);
1275 MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1276 rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1277 data, lockh, lmm, lmmsize,
1278 cb_completion, cb_blocking,
1283 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1284 char *filename, int namelen,
1285 __u64 valid, unsigned int ea_size,
1286 struct ptlrpc_request **request)
1290 EXP_CHECK_MD_OP(exp, getattr_lock);
1291 MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1292 rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1293 valid, ea_size, request);
1297 static inline int md_intent_lock(struct obd_export *exp,
1298 struct lustre_id *pid, const char *name,
1299 int len, void *lmm, int lmmsize,
1300 struct lustre_id *cid, struct lookup_intent *it,
1301 int flags, struct ptlrpc_request **reqp,
1302 ldlm_blocking_callback cb_blocking)
1306 EXP_CHECK_MD_OP(exp, intent_lock);
1307 MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1308 rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1309 lmm, lmmsize, cid, it, flags,
1314 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1315 struct ptlrpc_request **request)
1319 EXP_CHECK_MD_OP(exp, link);
1320 MD_COUNTER_INCREMENT(exp->exp_obd, link);
1321 rc = MDP(exp->exp_obd, link)(exp, data, request);
1325 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1326 const char *old, int oldlen,
1327 const char *new, int newlen,
1328 struct ptlrpc_request **request)
1332 EXP_CHECK_MD_OP(exp, rename);
1333 MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1334 rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1339 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1340 struct iattr *iattr, void *ea, int ealen,
1341 void *ea2, int ea2len,
1342 struct ptlrpc_request **request)
1346 EXP_CHECK_MD_OP(exp, setattr);
1347 MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1348 rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1349 ea2, ea2len, request);
1353 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1354 struct ptlrpc_request **request)
1358 EXP_CHECK_MD_OP(exp, sync);
1359 MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1360 rc = MDP(exp->exp_obd, sync)(exp, id, request);
1364 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1365 __u64 offset, struct page *page,
1366 struct ptlrpc_request **request)
1370 EXP_CHECK_MD_OP(exp, readpage);
1371 MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1372 rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1376 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1377 struct ptlrpc_request **request)
1381 EXP_CHECK_MD_OP(exp, unlink);
1382 MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1383 rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1387 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1388 struct lustre_id *fid)
1391 if (MDP(exp->exp_obd, get_real_obd) == NULL)
1392 return exp->exp_obd;
1393 MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1394 return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1397 static inline int md_valid_attrs(struct obd_export *exp,
1398 struct lustre_id *id)
1401 EXP_CHECK_MD_OP(exp, valid_attrs);
1402 MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1403 return MDP(exp->exp_obd, valid_attrs)(exp, id);
1406 static inline int md_req2lustre_md(struct obd_export *exp,
1407 struct ptlrpc_request *req,
1408 unsigned int offset,
1409 struct obd_export *osc_exp,
1410 struct lustre_md *md)
1413 EXP_CHECK_MD_OP(exp, req2lustre_md);
1414 MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1415 return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1418 static inline int md_set_open_replay_data(struct obd_export *exp,
1419 struct obd_client_handle *och,
1420 struct ptlrpc_request *open_req)
1423 EXP_CHECK_MD_OP(exp, set_open_replay_data);
1424 MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1425 return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1428 static inline int md_clear_open_replay_data(struct obd_export *exp,
1429 struct obd_client_handle *och)
1432 EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1433 MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1434 return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1437 static inline int md_store_inode_generation(struct obd_export *exp,
1438 struct ptlrpc_request *req,
1439 int reqoff, int repoff)
1442 EXP_CHECK_MD_OP(exp, store_inode_generation);
1443 MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1444 return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1448 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1452 EXP_CHECK_MD_OP(exp, set_lock_data);
1453 MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1454 return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1457 /* OBD Metadata Support */
1459 extern int obd_init_caches(void);
1460 extern void obd_cleanup_caches(void);
1462 /* support routines */
1463 extern kmem_cache_t *obdo_cachep;
1464 static inline struct obdo *obdo_alloc(void)
1468 OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1473 static inline void obdo_free(struct obdo *oa)
1475 OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1478 static inline void obdo2id(struct lustre_id *id,
1482 id_ino(id) = oa->o_id;
1483 id_fid(id) = oa->o_fid;
1484 id_group(id) = oa->o_mds;
1485 id_gen(id) = oa->o_generation;
1488 static inline void id2obdo(struct obdo *oa,
1489 struct lustre_id *id)
1492 oa->o_id = id_ino(id);
1493 oa->o_fid = id_fid(id);
1494 oa->o_mds = id_group(id);
1495 oa->o_generation = id_gen(id);
1498 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1499 #define to_kdev_t(dev) dev
1500 #define kdev_t_to_nr(dev) dev
1503 /* I'm as embarrassed about this as you are.
1505 * <shaver> // XXX do not look into _superhack with remaining eye
1506 * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1507 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1508 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1511 extern void obd_sysctl_init (void);
1512 extern void obd_sysctl_clean (void);
1515 typedef __u8 class_uuid_t[16];
1516 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1517 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1520 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1521 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1522 int class_del_uuid (char *uuid);
1523 void class_init_uuidlist(void);
1524 void class_exit_uuidlist(void);
1527 int mea_name2idx(struct mea *mea, char *name, int namelen);
1528 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1530 #endif /* __LINUX_OBD_CLASS_H */