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.
32 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
39 * lustre/mdt/mdt_internal.h
41 * Lustre Metadata Target (mdt) request handler
43 * Author: Peter Braam <braam@clusterfs.com>
44 * Author: Andreas Dilger <adilger@clusterfs.com>
45 * Author: Phil Schwan <phil@clusterfs.com>
46 * Author: Mike Shaver <shaver@clusterfs.com>
47 * Author: Nikita Danilov <nikita@clusterfs.com>
48 * Author: Huang Hua <huanghua@clusterfs.com>
51 #ifndef _MDT_INTERNAL_H
52 #define _MDT_INTERNAL_H
54 #if defined(__KERNEL__)
57 * struct ptlrpc_client
59 #include <lustre_net.h>
62 * struct obd_connect_data
63 * struct lustre_handle
65 #include <lustre/lustre_idl.h>
66 #include <lustre_disk.h>
67 #include <lu_target.h>
68 #include <md_object.h>
69 #include <lustre_fid.h>
70 #include <lustre_fld.h>
71 #include <lustre_req_layout.h>
72 #include <lustre_sec.h>
74 #include <lustre_idmap.h>
75 #include <lustre_eacl.h>
76 #include <lustre_fsfilt.h>
78 /* check if request's xid is equal to last one or not*/
79 static inline int req_xid_is_last(struct ptlrpc_request *req)
81 struct lsd_client_data *lcd = req->rq_export->exp_target_data.ted_lcd;
82 return (req->rq_xid == lcd->lcd_last_xid ||
83 req->rq_xid == lcd->lcd_last_close_xid);
87 /* file data for open files on MDS */
88 struct mdt_file_data {
89 struct portals_handle mfd_handle; /* must be first */
90 cfs_list_t mfd_list; /* protected by med_open_lock */
91 __u64 mfd_xid; /* xid of the open request */
92 struct lustre_handle mfd_old_handle; /* old handle in replay case */
93 int mfd_mode; /* open mode provided by client */
94 struct mdt_object *mfd_object; /* point to opened object */
97 /* mdt state flag bits */
98 #define MDT_FL_CFGLOG 0
99 #define MDT_FL_SYNCED 1
103 struct md_device mdt_md_dev;
104 struct ptlrpc_service *mdt_regular_service;
105 struct ptlrpc_service *mdt_readpage_service;
106 struct ptlrpc_service *mdt_xmds_service;
107 struct ptlrpc_service *mdt_setattr_service;
108 struct ptlrpc_service *mdt_mdsc_service;
109 struct ptlrpc_service *mdt_mdss_service;
110 struct ptlrpc_service *mdt_dtss_service;
111 struct ptlrpc_service *mdt_fld_service;
112 /* DLM name-space for meta-data locks maintained by this server */
113 struct ldlm_namespace *mdt_namespace;
114 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
115 struct ptlrpc_client *mdt_ldlm_client;
116 /* underlying device */
117 struct md_device *mdt_child;
118 struct dt_device *mdt_bottom;
120 struct lu_target mdt_lut;
122 * Options bit-fields.
125 signed int mo_user_xattr :1,
132 /* mdt state flags */
133 unsigned long mdt_state;
134 /* lock to protect IOepoch */
135 cfs_spinlock_t mdt_ioepoch_lock;
138 /* transaction callbacks */
139 struct dt_txn_callback mdt_txn_cb;
141 /* these values should be updated from lov if necessary.
142 * or should be placed somewhere else. */
144 int mdt_max_cookiesize;
146 struct upcall_cache *mdt_identity_cache;
149 cfs_rwlock_t mdt_sptlrpc_lock;
150 struct sptlrpc_rule_set mdt_sptlrpc_rset;
152 /* capability keys */
153 unsigned long mdt_capa_timeout;
155 struct dt_object *mdt_ck_obj;
156 unsigned long mdt_ck_timeout;
157 unsigned long mdt_ck_expiry;
158 cfs_timer_t mdt_ck_timer;
159 struct ptlrpc_thread mdt_ck_thread;
160 struct lustre_capa_key mdt_capa_keys[2];
161 unsigned int mdt_capa_conf:1,
165 uid_t mdt_squash_uid;
166 gid_t mdt_squash_gid;
167 cfs_list_t mdt_nosquash_nids;
168 char *mdt_nosquash_str;
169 int mdt_nosquash_strlen;
170 cfs_rw_semaphore_t mdt_squash_sem;
172 cfs_proc_dir_entry_t *mdt_proc_entry;
173 struct lprocfs_stats *mdt_stats;
177 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
178 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
179 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \
180 OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR)
181 #define MDT_COS_DEFAULT (0)
184 struct lu_object_header mot_header;
185 struct md_object mot_obj;
188 int mot_ioepoch_count;
190 /* Lock to protect object's IO epoch. */
191 cfs_semaphore_t mot_ioepoch_sem;
192 /* Lock to protect create_data */
193 cfs_semaphore_t mot_lov_sem;
196 enum mdt_object_flags {
197 /** SOM attributes are changed. */
198 MOF_SOM_CHANGE = (1 << 0),
200 * The SOM recovery state for mdt object.
201 * This state is an in-memory equivalent of an absent SOM EA, used
202 * instead of invalidating SOM EA while IOEpoch is still opened when
203 * a client eviction occurs or a client fails to obtain SOM attributes.
204 * It indicates that the last IOEpoch holder will need to obtain SOM
205 * attributes under [0;EOF] extent lock to flush all the client's
206 * cached of evicted from MDS clients (but not necessary evicted from
207 * OST) before taking ost attributes.
209 MOF_SOM_RECOV = (1 << 1),
210 /** File has been just created. */
211 MOF_SOM_CREATED = (1 << 2),
212 /** lov object has been created. */
213 MOF_LOV_CREATED = (1 << 3),
216 struct mdt_lock_handle {
217 /* Lock type, reg for cross-ref use or pdo lock. */
221 struct lustre_handle mlh_reg_lh;
222 ldlm_mode_t mlh_reg_mode;
225 struct lustre_handle mlh_pdo_lh;
226 ldlm_mode_t mlh_pdo_mode;
227 unsigned int mlh_pdo_hash;
231 MDT_LH_PARENT, /* parent lockh */
232 MDT_LH_CHILD, /* child lockh */
233 MDT_LH_OLD, /* old lockh for rename */
234 MDT_LH_NEW, /* new lockh for rename */
235 MDT_LH_RMT, /* used for return lh to caller */
244 struct mdt_reint_record {
245 mdt_reint_t rr_opcode;
246 const struct lustre_handle *rr_handle;
247 const struct lu_fid *rr_fid1;
248 const struct lu_fid *rr_fid2;
253 const void *rr_eadata;
256 const struct llog_cookie *rr_logcookies;
260 enum mdt_reint_flag {
261 MRF_OPEN_TRUNC = 1 << 0,
265 * Common data shared by mdt-level handlers. This is allocated per-thread to
266 * reduce stack consumption.
268 struct mdt_thread_info {
271 * The following members will be filled explicitly
272 * with specific data in mdt_thread_info_init().
274 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
275 * request handling may migrate from one server thread to another.
277 struct req_capsule *mti_pill;
279 /* although we have export in req, there are cases when it is not
280 * available, e.g. closing files upon export destroy */
281 struct obd_export *mti_exp;
283 * A couple of lock handles.
285 struct mdt_lock_handle mti_lh[MDT_LH_NR];
287 struct mdt_device *mti_mdt;
288 const struct lu_env *mti_env;
291 * Additional fail id that can be set by handler. Passed to
292 * target_send_reply().
296 /* transaction number of current request */
302 * The following members will be filled expilictly
303 * with zero in mdt_thread_info_init(). These members may be used
310 struct md_attr mti_attr;
312 * Body for "habeo corpus" operations.
314 const struct mdt_body *mti_body;
316 * Host object. This is released at the end of mdt_handler().
318 struct mdt_object *mti_object;
320 * Lock request for "habeo clavis" operations.
322 const struct ldlm_request *mti_dlm_req;
324 __u32 mti_has_trans:1, /* has txn already? */
328 /* opdata for mdt_reint_open(), has the same as
329 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
330 * value onto disk for recovery when mdt_trans_stop_cb() is called.
336 * The following members will be filled explicitly
337 * with zero in mdt_reint_unpack(), because they are only used
338 * by reint requests (including mdt_reint_open()).
342 * reint record. contains information for reint operations.
344 struct mdt_reint_record mti_rr;
346 /** md objects included in operation */
347 struct mdt_object *mti_mos;
348 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
350 * Operation specification (currently create and lookup)
352 struct md_op_spec mti_spec;
356 * The following members will _NOT_ be initialized at all.
357 * DO NOT expect them to contain any valid value.
358 * They should be initialized explicitly by the user themselves.
361 /* XXX: If something is in a union, make sure they do not conflict */
363 struct lu_fid mti_tmp_fid1;
364 struct lu_fid mti_tmp_fid2;
365 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
366 * mdt_rename_lock() */
367 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
370 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
371 char ns_name[48]; /* for mdt_init0() */
372 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
373 cfs_kstatfs_t ksfs; /* for mdt_statfs() */
375 /* for mdt_readpage() */
376 struct lu_rdpg mti_rdpg;
377 /* for mdt_sendpage() */
378 struct l_wait_info mti_wait_info;
382 struct md_som_data data;
386 /* IO epoch related stuff. */
387 struct mdt_ioepoch *mti_ioepoch;
388 __u64 mti_replayepoch;
390 /* server and client data buffers */
391 struct lr_server_data mti_lsd;
392 struct lsd_client_data mti_lcd;
394 struct lu_buf mti_buf;
395 struct lustre_capa_key mti_capa_key;
397 /* Ops object filename */
398 struct lu_name mti_name;
399 struct md_attr mti_tmp_attr;
402 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
403 void *data, int err);
404 struct mdt_commit_cb {
405 mdt_cb_t mdt_cb_func;
410 MDT_TXN_CAPA_KEYS_WRITE_OP,
411 MDT_TXN_LAST_RCVD_WRITE_OP,
414 static inline const struct md_device_operations *
415 mdt_child_ops(struct mdt_device * m)
417 LASSERT(m->mdt_child);
418 return m->mdt_child->md_ops;
421 static inline struct md_object *mdt_object_child(struct mdt_object *o)
424 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
427 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
429 return info->mti_pill ? info->mti_pill->rc_req : NULL;
432 static inline int req_is_replay(struct ptlrpc_request *req)
434 LASSERT(req->rq_reqmsg);
435 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
438 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
440 LASSERT(info->mti_exp);
441 return info->mti_exp->exp_connect_flags;
444 static inline void mdt_object_get(const struct lu_env *env,
445 struct mdt_object *o)
448 lu_object_get(&o->mot_obj.mo_lu);
452 static inline void mdt_object_put(const struct lu_env *env,
453 struct mdt_object *o)
456 lu_object_put(env, &o->mot_obj.mo_lu);
460 static inline int mdt_object_exists(const struct mdt_object *o)
462 return lu_object_exists(&o->mot_obj.mo_lu);
465 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
467 return lu_object_fid(&o->mot_obj.mo_lu);
470 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
472 return mdt->mdt_md_dev.md_lu_dev.ld_site;
475 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
477 return lu_site2md(mdt_lu_site(mdt));
480 static inline void mdt_export_evict(struct obd_export *exp)
482 class_fail_export(exp);
483 class_export_put(exp);
486 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
487 void mdt_set_disposition(struct mdt_thread_info *info,
488 struct ldlm_reply *rep, int flag);
489 void mdt_clear_disposition(struct mdt_thread_info *info,
490 struct ldlm_reply *rep, int flag);
492 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
493 ldlm_mode_t lm, const char *name,
496 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
499 int mdt_lock_setup(struct mdt_thread_info *info,
500 struct mdt_object *o,
501 struct mdt_lock_handle *lh);
503 int mdt_object_lock(struct mdt_thread_info *,
505 struct mdt_lock_handle *,
508 void mdt_object_unlock(struct mdt_thread_info *,
510 struct mdt_lock_handle *,
513 struct mdt_object *mdt_object_find(const struct lu_env *,
515 const struct lu_fid *);
516 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
517 const struct lu_fid *,
518 struct mdt_lock_handle *,
520 void mdt_object_unlock_put(struct mdt_thread_info *,
522 struct mdt_lock_handle *,
525 int mdt_close_unpack(struct mdt_thread_info *info);
526 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
527 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
528 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
529 const struct lu_attr *attr, const struct lu_fid *fid);
531 int mdt_getxattr(struct mdt_thread_info *info);
532 int mdt_reint_setxattr(struct mdt_thread_info *info,
533 struct mdt_lock_handle *lh);
535 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
536 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
538 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
539 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
540 struct mdt_lock_handle *lhc);
542 extern void target_recovery_fini(struct obd_device *obd);
543 extern void target_recovery_init(struct lu_target *lut,
544 svc_handler_t handler);
545 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
546 struct obd_device *, struct lustre_sb_info *lsi);
547 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
549 int mdt_client_del(const struct lu_env *env,
550 struct mdt_device *mdt);
551 int mdt_client_add(const struct lu_env *env,
552 struct mdt_device *mdt,
554 int mdt_client_new(const struct lu_env *env,
555 struct mdt_device *mdt);
557 int mdt_export_stats_init(struct obd_device *obd,
558 struct obd_export *exp,
561 int mdt_pin(struct mdt_thread_info* info);
563 int mdt_lock_new_child(struct mdt_thread_info *info,
564 struct mdt_object *o,
565 struct mdt_lock_handle *child_lockh);
567 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
570 int mdt_reint_open(struct mdt_thread_info *info,
571 struct mdt_lock_handle *lhc);
573 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
574 const struct lustre_handle *);
577 MDT_IOEPOCH_CLOSED = 0,
578 MDT_IOEPOCH_OPENED = 1,
579 MDT_IOEPOCH_GETATTR = 2,
587 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
589 int mdt_object_is_som_enabled(struct mdt_object *mo);
590 int mdt_write_get(struct mdt_object *o);
591 void mdt_write_put(struct mdt_object *o);
592 int mdt_write_read(struct mdt_object *o);
593 struct mdt_file_data *mdt_mfd_new(void);
594 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
595 void mdt_mfd_free(struct mdt_file_data *mfd);
596 int mdt_close(struct mdt_thread_info *info);
597 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
598 struct md_attr *ma, int flags);
599 int mdt_done_writing(struct mdt_thread_info *info);
600 void mdt_shrink_reply(struct mdt_thread_info *info);
601 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
602 const struct md_attr *);
603 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
605 struct thandle *mdt_trans_create(const struct lu_env *env,
606 struct mdt_device *mdt);
607 int mdt_trans_start(const struct lu_env *env, struct mdt_device *mdt,
609 void mdt_trans_stop(const struct lu_env *env,
610 struct mdt_device *mdt, struct thandle *th);
611 int mdt_record_write(const struct lu_env *env,
612 struct dt_object *dt, const struct lu_buf *buf,
613 loff_t *pos, struct thandle *th);
614 int mdt_record_read(const struct lu_env *env,
615 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
617 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
618 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
619 const void *area, ssize_t len);
621 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
623 int mdt_check_ucred(struct mdt_thread_info *);
624 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
625 int mdt_init_ucred_reint(struct mdt_thread_info *);
626 void mdt_exit_ucred(struct mdt_thread_info *);
627 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
628 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
629 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
633 int mdt_init_sec_level(struct mdt_thread_info *);
634 int mdt_init_idmap(struct mdt_thread_info *);
635 void mdt_cleanup_idmap(struct mdt_export_data *);
636 int mdt_handle_idmap(struct mdt_thread_info *);
637 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
638 struct ptlrpc_user_desc *);
639 void mdt_body_reverse_idmap(struct mdt_thread_info *,
641 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
642 struct mdt_remote_perm *);
643 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
645 static inline struct mdt_device *mdt_dev(struct lu_device *d)
647 // LASSERT(lu_device_is_mdt(d));
648 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
651 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
653 struct lu_object *lo;
654 struct mdt_device *mdt = mdt_dev(mo->mot_obj.mo_lu.lo_dev);
656 lo = lu_object_locate(mo->mot_obj.mo_lu.lo_header,
657 mdt->mdt_bottom->dd_lu_dev.ld_type);
661 /* mdt/mdt_identity.c */
662 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
664 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
666 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
668 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
670 void mdt_flush_identity(struct upcall_cache *, int);
672 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
674 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
676 extern struct lu_context_key mdt_thread_key;
677 /* debug issues helper starts here*/
678 static inline void mdt_fail_write(const struct lu_env *env,
679 struct dt_device *dd, int id)
681 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
682 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
684 dd->dd_ops->dt_ro(env, dd);
685 /* We set FAIL_ONCE because we never "un-fail" a device */
689 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
691 return &req->rq_export->exp_mdt_data;
694 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
695 struct mdt_lock_handle *lhc);
696 static inline int mdt_check_resent(struct mdt_thread_info *info,
697 mdt_reconstruct_t reconstruct,
698 struct mdt_lock_handle *lhc)
700 struct ptlrpc_request *req = mdt_info_req(info);
703 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
704 if (req_xid_is_last(req)) {
705 reconstruct(info, lhc);
708 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
709 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
714 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
716 static inline int is_identity_get_disabled(struct upcall_cache *cache)
718 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
721 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
723 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
724 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
725 struct lustre_handle *lh,
727 ldlm_policy_data_t *policy,
728 const struct ldlm_res_id *res_id,
729 int flags, const __u64 *client_cookie)
736 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
737 mode, &flags, mdt_blocking_ast,
738 ldlm_completion_ast, NULL, NULL, 0,
740 return rc == ELDLM_OK ? 0 : -EIO;
743 static inline void mdt_fid_unlock(struct lustre_handle *lh,
746 ldlm_lock_decref(lh, mode);
749 extern mdl_mode_t mdt_mdl_lock_modes[];
750 extern ldlm_mode_t mdt_dlm_lock_modes[];
752 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
754 LASSERT(IS_PO2(mode));
755 return mdt_mdl_lock_modes[mode];
758 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
760 LASSERT(IS_PO2(mode));
761 return mdt_dlm_lock_modes[mode];
764 static inline struct lu_name *mdt_name(const struct lu_env *env,
765 char *name, int namelen)
767 struct lu_name *lname;
768 struct mdt_thread_info *mti;
770 LASSERT(namelen > 0);
771 /* trailing '\0' in buffer */
772 LASSERT(name[namelen] == '\0');
774 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
775 lname = &mti->mti_name;
776 lname->ln_name = name;
777 lname->ln_namelen = namelen;
781 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
782 struct lu_name *slname)
787 tlname->ln_name = slname->ln_name;
788 tlname->ln_namelen = slname->ln_namelen;
792 void mdt_enable_cos(struct mdt_device *, int);
793 int mdt_cos_is_enabled(struct mdt_device *);
794 int mdt_hsm_copytool_send(struct obd_export *exp);
814 void mdt_counter_incr(struct obd_export *exp, int opcode);
815 void mdt_stats_counter_init(struct lprocfs_stats *stats);
816 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
817 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
818 int mdt_procfs_fini(struct mdt_device *mdt);
820 void mdt_time_start(const struct mdt_thread_info *info);
821 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__ */