1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_internal.h
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Andreas Dilger <adilger@clusterfs.com>
42 * Author: Phil Schwan <phil@clusterfs.com>
43 * Author: Mike Shaver <shaver@clusterfs.com>
44 * Author: Nikita Danilov <nikita@clusterfs.com>
45 * Author: Huang Hua <huanghua@clusterfs.com>
48 #ifndef _MDT_INTERNAL_H
49 #define _MDT_INTERNAL_H
51 #if defined(__KERNEL__)
54 * struct ptlrpc_client
56 #include <lustre_net.h>
59 * struct obd_connect_data
60 * struct lustre_handle
62 #include <lustre/lustre_idl.h>
63 #include <lustre_disk.h>
64 #include <lu_target.h>
65 #include <md_object.h>
66 #include <lustre_fid.h>
67 #include <lustre_fld.h>
68 #include <lustre_req_layout.h>
69 #include <lustre_sec.h>
71 #include <lustre_idmap.h>
72 #include <lustre_eacl.h>
73 #include <lustre_fsfilt.h>
75 /* check if request's xid is equal to last one or not*/
76 static inline int req_xid_is_last(struct ptlrpc_request *req)
78 struct lsd_client_data *lcd = req->rq_export->exp_mdt_data.med_lcd;
79 return (req->rq_xid == lcd->lcd_last_xid ||
80 req->rq_xid == lcd->lcd_last_close_xid);
84 /* file data for open files on MDS */
85 struct mdt_file_data {
86 struct portals_handle mfd_handle; /* must be first */
87 cfs_list_t mfd_list; /* protected by med_open_lock */
88 __u64 mfd_xid; /* xid of the open request */
89 struct lustre_handle mfd_old_handle; /* old handle in replay case */
90 int mfd_mode; /* open mode provided by client */
91 struct mdt_object *mfd_object; /* point to opened object */
94 /* mdt state flag bits */
95 #define MDT_FL_CFGLOG 0
96 #define MDT_FL_SYNCED 1
100 struct md_device mdt_md_dev;
101 struct ptlrpc_service *mdt_regular_service;
102 struct ptlrpc_service *mdt_readpage_service;
103 struct ptlrpc_service *mdt_xmds_service;
104 struct ptlrpc_service *mdt_setattr_service;
105 struct ptlrpc_service *mdt_mdsc_service;
106 struct ptlrpc_service *mdt_mdss_service;
107 struct ptlrpc_service *mdt_dtss_service;
108 struct ptlrpc_service *mdt_fld_service;
109 /* DLM name-space for meta-data locks maintained by this server */
110 struct ldlm_namespace *mdt_namespace;
111 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
112 struct ptlrpc_client *mdt_ldlm_client;
113 /* underlying device */
114 struct md_device *mdt_child;
115 struct dt_device *mdt_bottom;
117 struct lu_target mdt_lut;
119 * Options bit-fields.
122 signed int mo_user_xattr :1,
129 /* mdt state flags */
130 unsigned long mdt_state;
131 /* lock to protect IOepoch */
132 cfs_spinlock_t mdt_ioepoch_lock;
135 /* transaction callbacks */
136 struct dt_txn_callback mdt_txn_cb;
138 /* these values should be updated from lov if necessary.
139 * or should be placed somewhere else. */
141 int mdt_max_cookiesize;
143 struct upcall_cache *mdt_identity_cache;
146 cfs_rwlock_t mdt_sptlrpc_lock;
147 struct sptlrpc_rule_set mdt_sptlrpc_rset;
149 /* capability keys */
150 unsigned long mdt_capa_timeout;
152 struct dt_object *mdt_ck_obj;
153 unsigned long mdt_ck_timeout;
154 unsigned long mdt_ck_expiry;
155 cfs_timer_t mdt_ck_timer;
156 struct ptlrpc_thread mdt_ck_thread;
157 struct lustre_capa_key mdt_capa_keys[2];
158 unsigned int mdt_capa_conf:1,
162 uid_t mdt_squash_uid;
163 gid_t mdt_squash_gid;
164 cfs_list_t mdt_nosquash_nids;
165 char *mdt_nosquash_str;
166 int mdt_nosquash_strlen;
167 cfs_rw_semaphore_t mdt_squash_sem;
169 cfs_proc_dir_entry_t *mdt_proc_entry;
170 struct lprocfs_stats *mdt_stats;
174 #define mdt_transno_lock mdt_lut.lut_translock
175 #define mdt_last_transno mdt_lut.lut_last_transno
176 #define mdt_last_rcvd mdt_lut.lut_last_rcvd
177 #define mdt_mount_count mdt_lut.lut_mount_count
178 #define mdt_lsd mdt_lut.lut_lsd
179 #define mdt_client_bitmap_lock mdt_lut.lut_client_bitmap_lock
180 #define mdt_client_bitmap mdt_lut.lut_client_bitmap
182 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
183 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
184 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \
185 OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR)
186 #define MDT_COS_DEFAULT (1)
189 struct lu_object_header mot_header;
190 struct md_object mot_obj;
193 int mot_ioepoch_count;
195 /* Lock to protect object's IO epoch. */
196 cfs_semaphore_t mot_ioepoch_sem;
199 enum mdt_object_flags {
200 /** SOM attributes are changed. */
201 MOF_SOM_CHANGE = (1 << 0),
203 * The SOM recovery state for mdt object.
204 * This state is an in-memory equivalent of an absent SOM EA, used
205 * instead of invalidating SOM EA while IOEpoch is still opened when
206 * a client eviction occurs or a client fails to obtain SOM attributes.
207 * It indicates that the last IOEpoch holder will need to obtain SOM
208 * attributes under [0;EOF] extent lock to flush all the client's
209 * cached of evicted from MDS clients (but not necessary evicted from
210 * OST) before taking ost attributes.
212 MOF_SOM_RECOV = (1 << 1),
213 /** File has been just created. */
214 MOF_SOM_CREATED = (1 << 2),
217 struct mdt_lock_handle {
218 /* Lock type, reg for cross-ref use or pdo lock. */
222 struct lustre_handle mlh_reg_lh;
223 ldlm_mode_t mlh_reg_mode;
226 struct lustre_handle mlh_pdo_lh;
227 ldlm_mode_t mlh_pdo_mode;
228 unsigned int mlh_pdo_hash;
232 MDT_LH_PARENT, /* parent lockh */
233 MDT_LH_CHILD, /* child lockh */
234 MDT_LH_OLD, /* old lockh for rename */
235 MDT_LH_NEW, /* new lockh for rename */
236 MDT_LH_RMT, /* used for return lh to caller */
245 struct mdt_reint_record {
246 mdt_reint_t rr_opcode;
247 const struct lustre_handle *rr_handle;
248 const struct lu_fid *rr_fid1;
249 const struct lu_fid *rr_fid2;
254 const void *rr_eadata;
257 const struct llog_cookie *rr_logcookies;
261 enum mdt_reint_flag {
262 MRF_SETATTR_LOCKED = 1 << 0,
266 * Common data shared by mdt-level handlers. This is allocated per-thread to
267 * reduce stack consumption.
269 struct mdt_thread_info {
272 * The following members will be filled explicitly
273 * with specific data in mdt_thread_info_init().
275 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
276 * request handling may migrate from one server thread to another.
278 struct req_capsule *mti_pill;
280 /* although we have export in req, there are cases when it is not
281 * available, e.g. closing files upon export destroy */
282 struct obd_export *mti_exp;
284 * A couple of lock handles.
286 struct mdt_lock_handle mti_lh[MDT_LH_NR];
288 struct mdt_device *mti_mdt;
289 const struct lu_env *mti_env;
292 * Additional fail id that can be set by handler. Passed to
293 * target_send_reply().
297 /* transaction number of current request */
303 * The following members will be filled expilictly
304 * with zero in mdt_thread_info_init(). These members may be used
311 struct md_attr mti_attr;
313 * Body for "habeo corpus" operations.
315 const struct mdt_body *mti_body;
317 * Host object. This is released at the end of mdt_handler().
319 struct mdt_object *mti_object;
321 * Lock request for "habeo clavis" operations.
323 const struct ldlm_request *mti_dlm_req;
325 __u32 mti_has_trans:1, /* has txn already? */
329 /* opdata for mdt_reint_open(), has the same as
330 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
331 * value onto disk for recovery when mdt_trans_stop_cb() is called.
337 * The following members will be filled explicitly
338 * with zero in mdt_reint_unpack(), because they are only used
339 * by reint requests (including mdt_reint_open()).
343 * reint record. contains information for reint operations.
345 struct mdt_reint_record mti_rr;
347 /** md objects included in operation */
348 struct mdt_object *mti_mos[PTLRPC_NUM_VERSIONS];
351 * Operation specification (currently create and lookup)
353 struct md_op_spec mti_spec;
357 * The following members will _NOT_ be initialized at all.
358 * DO NOT expect them to contain any valid value.
359 * They should be initialized explicitly by the user themselves.
362 /* XXX: If something is in a union, make sure they do not conflict */
364 struct lu_fid mti_tmp_fid1;
365 struct lu_fid mti_tmp_fid2;
366 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
367 * mdt_rename_lock() */
368 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
371 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
372 char ns_name[48]; /* for mdt_init0() */
373 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
374 cfs_kstatfs_t ksfs; /* for mdt_statfs() */
376 /* for mdt_readpage() */
377 struct lu_rdpg mti_rdpg;
378 /* for mdt_sendpage() */
379 struct l_wait_info mti_wait_info;
383 struct md_som_data data;
387 /* IO epoch related stuff. */
388 struct mdt_ioepoch *mti_ioepoch;
389 __u64 mti_replayepoch;
391 /* server and client data buffers */
392 struct lr_server_data mti_lsd;
393 struct lsd_client_data mti_lcd;
395 struct txn_param mti_txn_param;
396 struct lu_buf mti_buf;
397 struct lustre_capa_key mti_capa_key;
399 /* Ops object filename */
400 struct lu_name mti_name;
401 struct md_attr mti_tmp_attr;
404 #define mti_parent mti_mos[0]
405 #define mti_child mti_mos[1]
406 #define mti_parent1 mti_mos[2]
407 #define mti_child1 mti_mos[3]
409 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
410 void *data, int err);
411 struct mdt_commit_cb {
412 mdt_cb_t mdt_cb_func;
417 MDT_TXN_CAPA_KEYS_WRITE_OP,
418 MDT_TXN_LAST_RCVD_WRITE_OP,
422 * Info allocated per-transaction.
424 #define MDT_MAX_COMMIT_CB 4
425 struct mdt_txn_info {
427 unsigned int txi_cb_count;
428 struct lut_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
431 extern struct lu_context_key mdt_txn_key;
433 static inline void mdt_trans_add_cb(const struct thandle *th,
434 lut_cb_t cb_func, void *cb_data)
436 struct mdt_txn_info *txi;
438 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
439 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
441 /* add new callback */
442 txi->txi_cb[txi->txi_cb_count].lut_cb_func = cb_func;
443 txi->txi_cb[txi->txi_cb_count].lut_cb_data = cb_data;
447 static inline const struct md_device_operations *
448 mdt_child_ops(struct mdt_device * m)
450 LASSERT(m->mdt_child);
451 return m->mdt_child->md_ops;
454 static inline struct md_object *mdt_object_child(struct mdt_object *o)
457 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
460 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
462 return info->mti_pill ? info->mti_pill->rc_req : NULL;
465 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
467 LASSERT(info->mti_exp);
468 return info->mti_exp->exp_connect_flags;
471 static inline void mdt_object_get(const struct lu_env *env,
472 struct mdt_object *o)
475 lu_object_get(&o->mot_obj.mo_lu);
479 static inline void mdt_object_put(const struct lu_env *env,
480 struct mdt_object *o)
483 lu_object_put(env, &o->mot_obj.mo_lu);
487 static inline int mdt_object_exists(const struct mdt_object *o)
489 return lu_object_exists(&o->mot_obj.mo_lu);
492 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
494 return lu_object_fid(&o->mot_obj.mo_lu);
497 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
499 return mdt->mdt_md_dev.md_lu_dev.ld_site;
502 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
504 return lu_site2md(mdt_lu_site(mdt));
507 static inline void mdt_export_evict(struct obd_export *exp)
509 class_fail_export(exp);
510 class_export_put(exp);
513 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
514 void mdt_set_disposition(struct mdt_thread_info *info,
515 struct ldlm_reply *rep, int flag);
516 void mdt_clear_disposition(struct mdt_thread_info *info,
517 struct ldlm_reply *rep, int flag);
519 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
520 ldlm_mode_t lm, const char *name,
523 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
526 int mdt_lock_setup(struct mdt_thread_info *info,
527 struct mdt_object *o,
528 struct mdt_lock_handle *lh);
530 int mdt_object_lock(struct mdt_thread_info *,
532 struct mdt_lock_handle *,
535 void mdt_object_unlock(struct mdt_thread_info *,
537 struct mdt_lock_handle *,
540 struct mdt_object *mdt_object_find(const struct lu_env *,
542 const struct lu_fid *);
543 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
544 const struct lu_fid *,
545 struct mdt_lock_handle *,
547 void mdt_object_unlock_put(struct mdt_thread_info *,
549 struct mdt_lock_handle *,
552 int mdt_close_unpack(struct mdt_thread_info *info);
553 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
554 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
555 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
556 const struct lu_attr *attr, const struct lu_fid *fid);
558 int mdt_getxattr(struct mdt_thread_info *info);
559 int mdt_reint_setxattr(struct mdt_thread_info *info,
560 struct mdt_lock_handle *lh);
562 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
563 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
565 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
566 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
567 struct mdt_lock_handle *lhc);
569 extern void target_recovery_fini(struct obd_device *obd);
570 extern void target_recovery_init(struct lu_target *lut,
571 svc_handler_t handler);
572 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
573 struct obd_device *, struct lustre_sb_info *lsi);
574 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
576 int mdt_client_del(const struct lu_env *env,
577 struct mdt_device *mdt);
578 int mdt_client_add(const struct lu_env *env,
579 struct mdt_device *mdt,
581 int mdt_client_new(const struct lu_env *env,
582 struct mdt_device *mdt);
584 int mdt_export_stats_init(struct obd_device *obd,
585 struct obd_export *exp,
588 int mdt_pin(struct mdt_thread_info* info);
590 int mdt_lock_new_child(struct mdt_thread_info *info,
591 struct mdt_object *o,
592 struct mdt_lock_handle *child_lockh);
594 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
597 int mdt_reint_open(struct mdt_thread_info *info,
598 struct mdt_lock_handle *lhc);
600 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
601 const struct lustre_handle *);
604 MDT_IOEPOCH_CLOSED = 0,
605 MDT_IOEPOCH_OPENED = 1,
606 MDT_IOEPOCH_GETATTR = 2,
614 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
616 int mdt_object_is_som_enabled(struct mdt_object *mo);
617 int mdt_write_get(struct mdt_object *o);
618 void mdt_write_put(struct mdt_object *o);
619 int mdt_write_read(struct mdt_object *o);
620 struct mdt_file_data *mdt_mfd_new(void);
621 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
622 void mdt_mfd_free(struct mdt_file_data *mfd);
623 int mdt_close(struct mdt_thread_info *info);
624 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
625 struct md_attr *ma, int flags);
626 int mdt_done_writing(struct mdt_thread_info *info);
627 void mdt_shrink_reply(struct mdt_thread_info *info);
628 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
629 const struct md_attr *);
630 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
632 void mdt_trans_credit_init(const struct lu_env *env,
633 struct mdt_device *mdt,
635 struct thandle* mdt_trans_start(const struct lu_env *env,
636 struct mdt_device *mdt);
637 void mdt_trans_stop(const struct lu_env *env,
638 struct mdt_device *mdt, struct thandle *th);
639 int mdt_record_write(const struct lu_env *env,
640 struct dt_object *dt, const struct lu_buf *buf,
641 loff_t *pos, struct thandle *th);
642 int mdt_record_read(const struct lu_env *env,
643 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
645 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
646 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
647 const void *area, ssize_t len);
649 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
651 int mdt_check_ucred(struct mdt_thread_info *);
652 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
653 int mdt_init_ucred_reint(struct mdt_thread_info *);
654 void mdt_exit_ucred(struct mdt_thread_info *);
655 int mdt_version_get_check(struct mdt_thread_info *, int);
658 int mdt_init_sec_level(struct mdt_thread_info *);
659 int mdt_init_idmap(struct mdt_thread_info *);
660 void mdt_cleanup_idmap(struct mdt_export_data *);
661 int mdt_handle_idmap(struct mdt_thread_info *);
662 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
663 struct ptlrpc_user_desc *);
664 void mdt_body_reverse_idmap(struct mdt_thread_info *,
666 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
667 struct mdt_remote_perm *);
668 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
670 static inline struct mdt_device *mdt_dev(struct lu_device *d)
672 // LASSERT(lu_device_is_mdt(d));
673 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
676 /* mdt/mdt_identity.c */
677 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
679 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
681 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
683 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
685 void mdt_flush_identity(struct upcall_cache *, int);
687 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
689 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
691 extern struct lu_context_key mdt_thread_key;
692 /* debug issues helper starts here*/
693 static inline void mdt_fail_write(const struct lu_env *env,
694 struct dt_device *dd, int id)
696 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
697 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
699 dd->dd_ops->dt_ro(env, dd);
700 /* We set FAIL_ONCE because we never "un-fail" a device */
704 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
706 return &req->rq_export->exp_mdt_data;
709 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
710 struct mdt_lock_handle *lhc);
711 static inline int mdt_check_resent(struct mdt_thread_info *info,
712 mdt_reconstruct_t reconstruct,
713 struct mdt_lock_handle *lhc)
715 struct ptlrpc_request *req = mdt_info_req(info);
718 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
719 if (req_xid_is_last(req)) {
720 reconstruct(info, lhc);
723 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
724 req->rq_export->exp_mdt_data.med_lcd->lcd_last_xid);
729 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
731 static inline int is_identity_get_disabled(struct upcall_cache *cache)
733 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
736 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
738 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
739 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
740 struct lustre_handle *lh,
742 ldlm_policy_data_t *policy,
743 const struct ldlm_res_id *res_id,
744 int flags, const __u64 *client_cookie)
751 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
752 mode, &flags, mdt_blocking_ast,
753 ldlm_completion_ast, NULL, NULL, 0,
755 return rc == ELDLM_OK ? 0 : -EIO;
758 static inline void mdt_fid_unlock(struct lustre_handle *lh,
761 ldlm_lock_decref(lh, mode);
764 extern mdl_mode_t mdt_mdl_lock_modes[];
765 extern ldlm_mode_t mdt_dlm_lock_modes[];
767 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
769 LASSERT(IS_PO2(mode));
770 return mdt_mdl_lock_modes[mode];
773 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
775 LASSERT(IS_PO2(mode));
776 return mdt_dlm_lock_modes[mode];
779 static inline struct lu_name *mdt_name(const struct lu_env *env,
780 char *name, int namelen)
782 struct lu_name *lname;
783 struct mdt_thread_info *mti;
785 LASSERT(namelen > 0);
786 /* trailing '\0' in buffer */
787 LASSERT(name[namelen] == '\0');
789 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
790 lname = &mti->mti_name;
791 lname->ln_name = name;
792 lname->ln_namelen = namelen;
796 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
797 struct lu_name *slname)
802 tlname->ln_name = slname->ln_name;
803 tlname->ln_namelen = slname->ln_namelen;
807 void mdt_enable_cos(struct mdt_device *, int);
808 int mdt_cos_is_enabled(struct mdt_device *);
809 int mdt_hsm_copytool_send(struct obd_export *exp);
812 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
813 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
814 int mdt_procfs_fini(struct mdt_device *mdt);
816 void mdt_time_start(const struct mdt_thread_info *info);
817 void mdt_time_end(const struct mdt_thread_info *info, int idx);
824 int mdt_ck_thread_start(struct mdt_device *mdt);
825 void mdt_ck_thread_stop(struct mdt_device *mdt);
826 void mdt_ck_timer_callback(unsigned long castmeharder);
827 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
829 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
830 const struct lu_fid *fid,
831 struct lustre_capa *capa)
833 struct md_capainfo *ci;
835 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
836 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
837 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
840 ci = md_capainfo(info->mti_env);
842 ci->mc_fid[offset] = fid;
843 ci->mc_capa[offset] = capa;
846 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
848 struct md_capainfo *ci = md_capainfo(info->mti_env);
853 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
856 if (!ci->mc_capa[i]) {
857 CERROR("no capa for index %d "DFID"\n",
858 i, PFID(ci->mc_fid[i]));
861 if (ci->mc_capa[i] == BYPASS_CAPA) {
862 CERROR("bypass for index %d "DFID"\n",
863 i, PFID(ci->mc_fid[i]));
866 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
870 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
872 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
874 #endif /* __KERNEL__ */