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 (c) 2007, 2010, Oracle and/or its affiliates. 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_target_data.ted_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_SERVICE_WATCHDOG_FACTOR (2)
175 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
176 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \
177 OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR)
178 #define MDT_COS_DEFAULT (0)
181 struct lu_object_header mot_header;
182 struct md_object mot_obj;
185 int mot_ioepoch_count;
187 /* Lock to protect object's IO epoch. */
188 cfs_semaphore_t mot_ioepoch_sem;
191 enum mdt_object_flags {
192 /** SOM attributes are changed. */
193 MOF_SOM_CHANGE = (1 << 0),
195 * The SOM recovery state for mdt object.
196 * This state is an in-memory equivalent of an absent SOM EA, used
197 * instead of invalidating SOM EA while IOEpoch is still opened when
198 * a client eviction occurs or a client fails to obtain SOM attributes.
199 * It indicates that the last IOEpoch holder will need to obtain SOM
200 * attributes under [0;EOF] extent lock to flush all the client's
201 * cached of evicted from MDS clients (but not necessary evicted from
202 * OST) before taking ost attributes.
204 MOF_SOM_RECOV = (1 << 1),
205 /** File has been just created. */
206 MOF_SOM_CREATED = (1 << 2),
209 struct mdt_lock_handle {
210 /* Lock type, reg for cross-ref use or pdo lock. */
214 struct lustre_handle mlh_reg_lh;
215 ldlm_mode_t mlh_reg_mode;
218 struct lustre_handle mlh_pdo_lh;
219 ldlm_mode_t mlh_pdo_mode;
220 unsigned int mlh_pdo_hash;
224 MDT_LH_PARENT, /* parent lockh */
225 MDT_LH_CHILD, /* child lockh */
226 MDT_LH_OLD, /* old lockh for rename */
227 MDT_LH_NEW, /* new lockh for rename */
228 MDT_LH_RMT, /* used for return lh to caller */
237 struct mdt_reint_record {
238 mdt_reint_t rr_opcode;
239 const struct lustre_handle *rr_handle;
240 const struct lu_fid *rr_fid1;
241 const struct lu_fid *rr_fid2;
246 const void *rr_eadata;
249 const struct llog_cookie *rr_logcookies;
253 enum mdt_reint_flag {
254 MRF_SETATTR_LOCKED = 1 << 0,
258 * Common data shared by mdt-level handlers. This is allocated per-thread to
259 * reduce stack consumption.
261 struct mdt_thread_info {
264 * The following members will be filled explicitly
265 * with specific data in mdt_thread_info_init().
267 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
268 * request handling may migrate from one server thread to another.
270 struct req_capsule *mti_pill;
272 /* although we have export in req, there are cases when it is not
273 * available, e.g. closing files upon export destroy */
274 struct obd_export *mti_exp;
276 * A couple of lock handles.
278 struct mdt_lock_handle mti_lh[MDT_LH_NR];
280 struct mdt_device *mti_mdt;
281 const struct lu_env *mti_env;
284 * Additional fail id that can be set by handler. Passed to
285 * target_send_reply().
289 /* transaction number of current request */
295 * The following members will be filled expilictly
296 * with zero in mdt_thread_info_init(). These members may be used
303 struct md_attr mti_attr;
305 * Body for "habeo corpus" operations.
307 const struct mdt_body *mti_body;
309 * Host object. This is released at the end of mdt_handler().
311 struct mdt_object *mti_object;
313 * Lock request for "habeo clavis" operations.
315 const struct ldlm_request *mti_dlm_req;
317 __u32 mti_has_trans:1, /* has txn already? */
321 /* opdata for mdt_reint_open(), has the same as
322 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
323 * value onto disk for recovery when mdt_trans_stop_cb() is called.
329 * The following members will be filled explicitly
330 * with zero in mdt_reint_unpack(), because they are only used
331 * by reint requests (including mdt_reint_open()).
335 * reint record. contains information for reint operations.
337 struct mdt_reint_record mti_rr;
339 /** md objects included in operation */
340 struct mdt_object *mti_mos;
341 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
343 * Operation specification (currently create and lookup)
345 struct md_op_spec mti_spec;
349 * The following members will _NOT_ be initialized at all.
350 * DO NOT expect them to contain any valid value.
351 * They should be initialized explicitly by the user themselves.
354 /* XXX: If something is in a union, make sure they do not conflict */
356 struct lu_fid mti_tmp_fid1;
357 struct lu_fid mti_tmp_fid2;
358 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
359 * mdt_rename_lock() */
360 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
363 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
364 char ns_name[48]; /* for mdt_init0() */
365 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
366 cfs_kstatfs_t ksfs; /* for mdt_statfs() */
368 /* for mdt_readpage() */
369 struct lu_rdpg mti_rdpg;
370 /* for mdt_sendpage() */
371 struct l_wait_info mti_wait_info;
375 struct md_som_data data;
379 /* IO epoch related stuff. */
380 struct mdt_ioepoch *mti_ioepoch;
381 __u64 mti_replayepoch;
383 /* server and client data buffers */
384 struct lr_server_data mti_lsd;
385 struct lsd_client_data mti_lcd;
387 struct txn_param mti_txn_param;
388 struct lu_buf mti_buf;
389 struct lustre_capa_key mti_capa_key;
391 /* Ops object filename */
392 struct lu_name mti_name;
393 struct md_attr mti_tmp_attr;
396 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
397 void *data, int err);
398 struct mdt_commit_cb {
399 mdt_cb_t mdt_cb_func;
404 MDT_TXN_CAPA_KEYS_WRITE_OP,
405 MDT_TXN_LAST_RCVD_WRITE_OP,
409 * Info allocated per-transaction.
411 #define MDT_MAX_COMMIT_CB 4
412 struct mdt_txn_info {
414 unsigned int txi_cb_count;
415 struct lut_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
418 extern struct lu_context_key mdt_txn_key;
420 static inline void mdt_trans_add_cb(const struct thandle *th,
421 lut_cb_t cb_func, void *cb_data)
423 struct mdt_txn_info *txi;
425 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
426 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
428 /* add new callback */
429 txi->txi_cb[txi->txi_cb_count].lut_cb_func = cb_func;
430 txi->txi_cb[txi->txi_cb_count].lut_cb_data = cb_data;
434 static inline const struct md_device_operations *
435 mdt_child_ops(struct mdt_device * m)
437 LASSERT(m->mdt_child);
438 return m->mdt_child->md_ops;
441 static inline struct md_object *mdt_object_child(struct mdt_object *o)
444 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
447 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
449 return info->mti_pill ? info->mti_pill->rc_req : NULL;
452 static inline int req_is_replay(struct ptlrpc_request *req)
454 LASSERT(req->rq_reqmsg);
455 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
458 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
460 LASSERT(info->mti_exp);
461 return info->mti_exp->exp_connect_flags;
464 static inline void mdt_object_get(const struct lu_env *env,
465 struct mdt_object *o)
468 lu_object_get(&o->mot_obj.mo_lu);
472 static inline void mdt_object_put(const struct lu_env *env,
473 struct mdt_object *o)
476 lu_object_put(env, &o->mot_obj.mo_lu);
480 static inline int mdt_object_exists(const struct mdt_object *o)
482 return lu_object_exists(&o->mot_obj.mo_lu);
485 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
487 return lu_object_fid(&o->mot_obj.mo_lu);
490 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
492 return mdt->mdt_md_dev.md_lu_dev.ld_site;
495 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
497 return lu_site2md(mdt_lu_site(mdt));
500 static inline void mdt_export_evict(struct obd_export *exp)
502 class_fail_export(exp);
503 class_export_put(exp);
506 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
507 void mdt_set_disposition(struct mdt_thread_info *info,
508 struct ldlm_reply *rep, int flag);
509 void mdt_clear_disposition(struct mdt_thread_info *info,
510 struct ldlm_reply *rep, int flag);
512 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
513 ldlm_mode_t lm, const char *name,
516 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
519 int mdt_lock_setup(struct mdt_thread_info *info,
520 struct mdt_object *o,
521 struct mdt_lock_handle *lh);
523 int mdt_object_lock(struct mdt_thread_info *,
525 struct mdt_lock_handle *,
528 void mdt_object_unlock(struct mdt_thread_info *,
530 struct mdt_lock_handle *,
533 struct mdt_object *mdt_object_find(const struct lu_env *,
535 const struct lu_fid *);
536 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
537 const struct lu_fid *,
538 struct mdt_lock_handle *,
540 void mdt_object_unlock_put(struct mdt_thread_info *,
542 struct mdt_lock_handle *,
545 int mdt_close_unpack(struct mdt_thread_info *info);
546 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
547 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
548 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
549 const struct lu_attr *attr, const struct lu_fid *fid);
551 int mdt_getxattr(struct mdt_thread_info *info);
552 int mdt_reint_setxattr(struct mdt_thread_info *info,
553 struct mdt_lock_handle *lh);
555 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
556 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
558 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
559 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
560 struct mdt_lock_handle *lhc);
562 extern void target_recovery_fini(struct obd_device *obd);
563 extern void target_recovery_init(struct lu_target *lut,
564 svc_handler_t handler);
565 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
566 struct obd_device *, struct lustre_sb_info *lsi);
567 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
569 int mdt_client_del(const struct lu_env *env,
570 struct mdt_device *mdt);
571 int mdt_client_add(const struct lu_env *env,
572 struct mdt_device *mdt,
574 int mdt_client_new(const struct lu_env *env,
575 struct mdt_device *mdt);
577 int mdt_export_stats_init(struct obd_device *obd,
578 struct obd_export *exp,
582 int mdt_pin(struct mdt_thread_info* info);
584 int mdt_lock_new_child(struct mdt_thread_info *info,
585 struct mdt_object *o,
586 struct mdt_lock_handle *child_lockh);
588 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
591 int mdt_reint_open(struct mdt_thread_info *info,
592 struct mdt_lock_handle *lhc);
594 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
595 const struct lustre_handle *);
598 MDT_IOEPOCH_CLOSED = 0,
599 MDT_IOEPOCH_OPENED = 1,
600 MDT_IOEPOCH_GETATTR = 2,
608 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
610 int mdt_object_is_som_enabled(struct mdt_object *mo);
611 int mdt_write_get(struct mdt_object *o);
612 void mdt_write_put(struct mdt_object *o);
613 int mdt_write_read(struct mdt_object *o);
614 struct mdt_file_data *mdt_mfd_new(void);
615 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
616 void mdt_mfd_free(struct mdt_file_data *mfd);
617 int mdt_close(struct mdt_thread_info *info);
618 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
619 struct md_attr *ma, int flags);
620 int mdt_done_writing(struct mdt_thread_info *info);
621 void mdt_shrink_reply(struct mdt_thread_info *info);
622 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
623 const struct md_attr *);
624 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
626 void mdt_trans_credit_init(const struct lu_env *env,
627 struct mdt_device *mdt,
629 struct thandle* mdt_trans_start(const struct lu_env *env,
630 struct mdt_device *mdt);
631 void mdt_trans_stop(const struct lu_env *env,
632 struct mdt_device *mdt, struct thandle *th);
633 int mdt_record_write(const struct lu_env *env,
634 struct dt_object *dt, const struct lu_buf *buf,
635 loff_t *pos, struct thandle *th);
636 int mdt_record_read(const struct lu_env *env,
637 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
639 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
640 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
641 const void *area, ssize_t len);
643 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
645 int mdt_check_ucred(struct mdt_thread_info *);
646 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
647 int mdt_init_ucred_reint(struct mdt_thread_info *);
648 void mdt_exit_ucred(struct mdt_thread_info *);
649 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
650 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
651 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
655 int mdt_init_sec_level(struct mdt_thread_info *);
656 int mdt_init_idmap(struct mdt_thread_info *);
657 void mdt_cleanup_idmap(struct mdt_export_data *);
658 int mdt_handle_idmap(struct mdt_thread_info *);
659 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
660 struct ptlrpc_user_desc *);
661 void mdt_body_reverse_idmap(struct mdt_thread_info *,
663 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
664 struct mdt_remote_perm *);
665 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
667 static inline struct mdt_device *mdt_dev(struct lu_device *d)
669 // LASSERT(lu_device_is_mdt(d));
670 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
673 /* mdt/mdt_identity.c */
674 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
676 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
678 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
680 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
682 void mdt_flush_identity(struct upcall_cache *, int);
684 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
686 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
688 extern struct lu_context_key mdt_thread_key;
689 /* debug issues helper starts here*/
690 static inline void mdt_fail_write(const struct lu_env *env,
691 struct dt_device *dd, int id)
693 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
694 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
696 dd->dd_ops->dt_ro(env, dd);
697 /* We set FAIL_ONCE because we never "un-fail" a device */
701 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
703 return &req->rq_export->exp_mdt_data;
706 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
707 struct mdt_lock_handle *lhc);
708 static inline int mdt_check_resent(struct mdt_thread_info *info,
709 mdt_reconstruct_t reconstruct,
710 struct mdt_lock_handle *lhc)
712 struct ptlrpc_request *req = mdt_info_req(info);
715 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
716 if (req_xid_is_last(req)) {
717 reconstruct(info, lhc);
720 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
721 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
726 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
728 static inline int is_identity_get_disabled(struct upcall_cache *cache)
730 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
733 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
735 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
736 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
737 struct lustre_handle *lh,
739 ldlm_policy_data_t *policy,
740 const struct ldlm_res_id *res_id,
741 int flags, const __u64 *client_cookie)
748 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
749 mode, &flags, mdt_blocking_ast,
750 ldlm_completion_ast, NULL, NULL, 0,
752 return rc == ELDLM_OK ? 0 : -EIO;
755 static inline void mdt_fid_unlock(struct lustre_handle *lh,
758 ldlm_lock_decref(lh, mode);
761 extern mdl_mode_t mdt_mdl_lock_modes[];
762 extern ldlm_mode_t mdt_dlm_lock_modes[];
764 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
766 LASSERT(IS_PO2(mode));
767 return mdt_mdl_lock_modes[mode];
770 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
772 LASSERT(IS_PO2(mode));
773 return mdt_dlm_lock_modes[mode];
776 static inline struct lu_name *mdt_name(const struct lu_env *env,
777 char *name, int namelen)
779 struct lu_name *lname;
780 struct mdt_thread_info *mti;
782 LASSERT(namelen > 0);
783 /* trailing '\0' in buffer */
784 LASSERT(name[namelen] == '\0');
786 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
787 lname = &mti->mti_name;
788 lname->ln_name = name;
789 lname->ln_namelen = namelen;
793 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
794 struct lu_name *slname)
799 tlname->ln_name = slname->ln_name;
800 tlname->ln_namelen = slname->ln_namelen;
804 void mdt_enable_cos(struct mdt_device *, int);
805 int mdt_cos_is_enabled(struct mdt_device *);
806 int mdt_hsm_copytool_send(struct obd_export *exp);
809 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
810 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
811 int mdt_procfs_fini(struct mdt_device *mdt);
813 void mdt_time_start(const struct mdt_thread_info *info);
814 void mdt_time_end(const struct mdt_thread_info *info, int idx);
821 int mdt_ck_thread_start(struct mdt_device *mdt);
822 void mdt_ck_thread_stop(struct mdt_device *mdt);
823 void mdt_ck_timer_callback(unsigned long castmeharder);
824 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
826 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
827 const struct lu_fid *fid,
828 struct lustre_capa *capa)
830 struct md_capainfo *ci;
832 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
833 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
834 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
837 ci = md_capainfo(info->mti_env);
839 ci->mc_fid[offset] = fid;
840 ci->mc_capa[offset] = capa;
843 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
845 struct md_capainfo *ci = md_capainfo(info->mti_env);
850 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
853 if (!ci->mc_capa[i]) {
854 CERROR("no capa for index %d "DFID"\n",
855 i, PFID(ci->mc_fid[i]));
858 if (ci->mc_capa[i] == BYPASS_CAPA) {
859 CERROR("bypass for index %d "DFID"\n",
860 i, PFID(ci->mc_fid[i]));
863 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
867 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
869 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
871 #endif /* __KERNEL__ */