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 struct list_head 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 */
96 struct md_device mdt_md_dev;
97 struct ptlrpc_service *mdt_regular_service;
98 struct ptlrpc_service *mdt_readpage_service;
99 struct ptlrpc_service *mdt_xmds_service;
100 struct ptlrpc_service *mdt_setattr_service;
101 struct ptlrpc_service *mdt_mdsc_service;
102 struct ptlrpc_service *mdt_mdss_service;
103 struct ptlrpc_service *mdt_dtss_service;
104 struct ptlrpc_service *mdt_fld_service;
105 /* DLM name-space for meta-data locks maintained by this server */
106 struct ldlm_namespace *mdt_namespace;
107 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
108 struct ptlrpc_client *mdt_ldlm_client;
109 /* underlying device */
110 struct md_device *mdt_child;
111 struct dt_device *mdt_bottom;
113 struct lu_target mdt_lut;
115 * Options bit-fields.
118 signed int mo_user_xattr :1,
125 /* mdt state flags */
126 __u32 mdt_fl_cfglog:1,
128 /* lock to pretect epoch and write count */
129 spinlock_t mdt_ioepoch_lock;
132 /* transaction callbacks */
133 struct dt_txn_callback mdt_txn_cb;
135 /* these values should be updated from lov if necessary.
136 * or should be placed somewhere else. */
138 int mdt_max_cookiesize;
140 struct upcall_cache *mdt_identity_cache;
143 rwlock_t mdt_sptlrpc_lock;
144 struct sptlrpc_rule_set mdt_sptlrpc_rset;
146 /* capability keys */
147 unsigned long mdt_capa_timeout;
149 struct dt_object *mdt_ck_obj;
150 unsigned long mdt_ck_timeout;
151 unsigned long mdt_ck_expiry;
152 cfs_timer_t mdt_ck_timer;
153 struct ptlrpc_thread mdt_ck_thread;
154 struct lustre_capa_key mdt_capa_keys[2];
155 unsigned int mdt_capa_conf:1,
159 uid_t mdt_squash_uid;
160 gid_t mdt_squash_gid;
161 struct list_head mdt_nosquash_nids;
162 char *mdt_nosquash_str;
163 int mdt_nosquash_strlen;
164 struct rw_semaphore mdt_squash_sem;
166 cfs_proc_dir_entry_t *mdt_proc_entry;
167 struct lprocfs_stats *mdt_stats;
171 #define mdt_transno_lock mdt_lut.lut_translock
172 #define mdt_last_transno mdt_lut.lut_last_transno
173 #define mdt_last_rcvd mdt_lut.lut_last_rcvd
174 #define mdt_mount_count mdt_lut.lut_mount_count
175 #define mdt_lsd mdt_lut.lut_lsd
176 #define mdt_client_bitmap_lock mdt_lut.lut_client_bitmap_lock
177 #define mdt_client_bitmap mdt_lut.lut_client_bitmap
179 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
180 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
181 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR)
182 #define MDT_COS_DEFAULT (1)
185 struct lu_object_header mot_header;
186 struct md_object mot_obj;
193 struct mdt_lock_handle {
194 /* Lock type, reg for cross-ref use or pdo lock. */
198 struct lustre_handle mlh_reg_lh;
199 ldlm_mode_t mlh_reg_mode;
202 struct lustre_handle mlh_pdo_lh;
203 ldlm_mode_t mlh_pdo_mode;
204 unsigned int mlh_pdo_hash;
208 MDT_LH_PARENT, /* parent lockh */
209 MDT_LH_CHILD, /* child lockh */
210 MDT_LH_OLD, /* old lockh for rename */
211 MDT_LH_NEW, /* new lockh for rename */
212 MDT_LH_RMT, /* used for return lh to caller */
221 struct mdt_reint_record {
222 mdt_reint_t rr_opcode;
223 const struct lustre_handle *rr_handle;
224 const struct lu_fid *rr_fid1;
225 const struct lu_fid *rr_fid2;
230 const void *rr_eadata;
233 const struct llog_cookie *rr_logcookies;
237 enum mdt_reint_flag {
238 MRF_SETATTR_LOCKED = 1 << 0,
242 * Common data shared by mdt-level handlers. This is allocated per-thread to
243 * reduce stack consumption.
245 struct mdt_thread_info {
248 * The following members will be filled explicitly
249 * with specific data in mdt_thread_info_init().
251 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
252 * request handling may migrate from one server thread to another.
254 struct req_capsule *mti_pill;
256 /* although we have export in req, there are cases when it is not
257 * available, e.g. closing files upon export destroy */
258 struct obd_export *mti_exp;
260 * A couple of lock handles.
262 struct mdt_lock_handle mti_lh[MDT_LH_NR];
264 struct mdt_device *mti_mdt;
265 const struct lu_env *mti_env;
268 * Additional fail id that can be set by handler. Passed to
269 * target_send_reply().
273 /* transaction number of current request */
279 * The following members will be filled expilictly
280 * with zero in mdt_thread_info_init(). These members may be used
287 struct md_attr mti_attr;
289 * Body for "habeo corpus" operations.
291 const struct mdt_body *mti_body;
293 * Host object. This is released at the end of mdt_handler().
295 struct mdt_object *mti_object;
297 * Lock request for "habeo clavis" operations.
299 const struct ldlm_request *mti_dlm_req;
301 __u32 mti_has_trans:1, /* has txn already? */
305 /* opdata for mdt_reint_open(), has the same as
306 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
307 * value onto disk for recovery when mdt_trans_stop_cb() is called.
313 * The following members will be filled explicitly
314 * with zero in mdt_reint_unpack(), because they are only used
315 * by reint requests (including mdt_reint_open()).
319 * reint record. contains information for reint operations.
321 struct mdt_reint_record mti_rr;
323 /** md objects included in operation */
324 struct mdt_object *mti_mos[PTLRPC_NUM_VERSIONS];
327 * Operation specification (currently create and lookup)
329 struct md_op_spec mti_spec;
333 * The following members will _NOT_ be initialized at all.
334 * DO NOT expect them to contain any valid value.
335 * They should be initialized explicitly by the user themselves.
338 /* XXX: If something is in a union, make sure they do not conflict */
340 struct lu_fid mti_tmp_fid1;
341 struct lu_fid mti_tmp_fid2;
342 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
343 * mdt_rename_lock() */
344 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
347 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
348 char ns_name[48]; /* for mdt_init0() */
349 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
350 struct kstatfs ksfs; /* for mdt_statfs() */
352 /* for mdt_readpage() */
353 struct lu_rdpg mti_rdpg;
354 /* for mdt_sendpage() */
355 struct l_wait_info mti_wait_info;
359 /* IO epoch related stuff. */
360 struct mdt_epoch *mti_epoch;
361 __u64 mti_replayepoch;
363 /* server and client data buffers */
364 struct lr_server_data mti_lsd;
365 struct lsd_client_data mti_lcd;
367 struct txn_param mti_txn_param;
368 struct lu_buf mti_buf;
369 struct lustre_capa_key mti_capa_key;
371 /* Ops object filename */
372 struct lu_name mti_name;
373 struct md_attr mti_tmp_attr;
376 #define mti_parent mti_mos[0]
377 #define mti_child mti_mos[1]
378 #define mti_parent1 mti_mos[2]
379 #define mti_child1 mti_mos[3]
381 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
382 void *data, int err);
383 struct mdt_commit_cb {
384 mdt_cb_t mdt_cb_func;
389 MDT_TXN_CAPA_KEYS_WRITE_OP,
390 MDT_TXN_LAST_RCVD_WRITE_OP,
394 * Info allocated per-transaction.
396 #define MDT_MAX_COMMIT_CB 4
397 struct mdt_txn_info {
399 unsigned int txi_cb_count;
400 struct lut_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
403 extern struct lu_context_key mdt_txn_key;
405 static inline void mdt_trans_add_cb(const struct thandle *th,
406 lut_cb_t cb_func, void *cb_data)
408 struct mdt_txn_info *txi;
410 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
411 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
413 /* add new callback */
414 txi->txi_cb[txi->txi_cb_count].lut_cb_func = cb_func;
415 txi->txi_cb[txi->txi_cb_count].lut_cb_data = cb_data;
419 static inline const struct md_device_operations *
420 mdt_child_ops(struct mdt_device * m)
422 LASSERT(m->mdt_child);
423 return m->mdt_child->md_ops;
426 static inline struct md_object *mdt_object_child(struct mdt_object *o)
429 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
432 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
434 return info->mti_pill ? info->mti_pill->rc_req : NULL;
437 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
439 LASSERT(info->mti_exp);
440 return info->mti_exp->exp_connect_flags;
443 static inline void mdt_object_get(const struct lu_env *env,
444 struct mdt_object *o)
447 lu_object_get(&o->mot_obj.mo_lu);
451 static inline void mdt_object_put(const struct lu_env *env,
452 struct mdt_object *o)
455 lu_object_put(env, &o->mot_obj.mo_lu);
459 static inline int mdt_object_exists(const struct mdt_object *o)
461 return lu_object_exists(&o->mot_obj.mo_lu);
464 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
466 return lu_object_fid(&o->mot_obj.mo_lu);
469 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
471 return mdt->mdt_md_dev.md_lu_dev.ld_site;
474 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
476 return lu_site2md(mdt_lu_site(mdt));
479 static inline void mdt_export_evict(struct obd_export *exp)
481 class_fail_export(exp);
482 class_export_put(exp);
485 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
486 void mdt_set_disposition(struct mdt_thread_info *info,
487 struct ldlm_reply *rep, int flag);
488 void mdt_clear_disposition(struct mdt_thread_info *info,
489 struct ldlm_reply *rep, int flag);
491 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
492 ldlm_mode_t lm, const char *name,
495 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
498 int mdt_lock_setup(struct mdt_thread_info *info,
499 struct mdt_object *o,
500 struct mdt_lock_handle *lh);
502 int mdt_object_lock(struct mdt_thread_info *,
504 struct mdt_lock_handle *,
507 void mdt_object_unlock(struct mdt_thread_info *,
509 struct mdt_lock_handle *,
512 struct mdt_object *mdt_object_find(const struct lu_env *,
514 const struct lu_fid *);
515 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
516 const struct lu_fid *,
517 struct mdt_lock_handle *,
519 void mdt_object_unlock_put(struct mdt_thread_info *,
521 struct mdt_lock_handle *,
524 int mdt_close_unpack(struct mdt_thread_info *info);
525 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
526 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
527 void mdt_pack_size2body(struct mdt_thread_info *info,
528 struct mdt_object *o);
529 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
530 const struct lu_attr *attr, const struct lu_fid *fid);
532 int mdt_getxattr(struct mdt_thread_info *info);
533 int mdt_reint_setxattr(struct mdt_thread_info *info,
534 struct mdt_lock_handle *lh);
536 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
537 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
539 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
540 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
541 struct mdt_lock_handle *lhc);
543 extern void target_recovery_fini(struct obd_device *obd);
544 extern void target_recovery_init(struct lu_target *lut,
545 svc_handler_t handler);
546 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
547 struct obd_device *, struct lustre_sb_info *lsi);
548 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
550 int mdt_client_del(const struct lu_env *env,
551 struct mdt_device *mdt);
552 int mdt_client_add(const struct lu_env *env,
553 struct mdt_device *mdt,
555 int mdt_client_new(const struct lu_env *env,
556 struct mdt_device *mdt);
558 int mdt_export_stats_init(struct obd_device *obd,
559 struct obd_export *exp,
562 int mdt_pin(struct mdt_thread_info* info);
564 int mdt_lock_new_child(struct mdt_thread_info *info,
565 struct mdt_object *o,
566 struct mdt_lock_handle *child_lockh);
568 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
571 int mdt_reint_open(struct mdt_thread_info *info,
572 struct mdt_lock_handle *lhc);
574 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
575 const struct lustre_handle *);
576 int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o);
577 void mdt_sizeonmds_enable(struct mdt_thread_info *info, struct mdt_object *mo);
578 int mdt_sizeonmds_enabled(struct mdt_object *mo);
579 int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o);
580 int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o);
581 struct mdt_file_data *mdt_mfd_new(void);
582 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
583 void mdt_mfd_free(struct mdt_file_data *mfd);
584 int mdt_close(struct mdt_thread_info *info);
585 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
587 int mdt_done_writing(struct mdt_thread_info *info);
588 void mdt_shrink_reply(struct mdt_thread_info *info);
589 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
590 const struct md_attr *);
591 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
593 void mdt_trans_credit_init(const struct lu_env *env,
594 struct mdt_device *mdt,
596 struct thandle* mdt_trans_start(const struct lu_env *env,
597 struct mdt_device *mdt);
598 void mdt_trans_stop(const struct lu_env *env,
599 struct mdt_device *mdt, struct thandle *th);
600 int mdt_record_write(const struct lu_env *env,
601 struct dt_object *dt, const struct lu_buf *buf,
602 loff_t *pos, struct thandle *th);
603 int mdt_record_read(const struct lu_env *env,
604 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
606 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
607 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
608 const void *area, ssize_t len);
610 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
612 int mdt_check_ucred(struct mdt_thread_info *);
613 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
614 int mdt_init_ucred_reint(struct mdt_thread_info *);
615 void mdt_exit_ucred(struct mdt_thread_info *);
616 int mdt_version_get_check(struct mdt_thread_info *, int);
619 int mdt_init_sec_level(struct mdt_thread_info *);
620 int mdt_init_idmap(struct mdt_thread_info *);
621 void mdt_cleanup_idmap(struct mdt_export_data *);
622 int mdt_handle_idmap(struct mdt_thread_info *);
623 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
624 struct ptlrpc_user_desc *);
625 void mdt_body_reverse_idmap(struct mdt_thread_info *,
627 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
628 struct mdt_remote_perm *);
629 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
631 static inline struct mdt_device *mdt_dev(struct lu_device *d)
633 // LASSERT(lu_device_is_mdt(d));
634 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
637 /* mdt/mdt_identity.c */
638 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
640 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
642 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
644 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
646 void mdt_flush_identity(struct upcall_cache *, int);
648 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
650 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
652 extern struct lu_context_key mdt_thread_key;
653 /* debug issues helper starts here*/
654 static inline void mdt_fail_write(const struct lu_env *env,
655 struct dt_device *dd, int id)
657 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
658 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
660 dd->dd_ops->dt_ro(env, dd);
661 /* We set FAIL_ONCE because we never "un-fail" a device */
665 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
667 return &req->rq_export->exp_mdt_data;
670 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
671 struct mdt_lock_handle *lhc);
672 static inline int mdt_check_resent(struct mdt_thread_info *info,
673 mdt_reconstruct_t reconstruct,
674 struct mdt_lock_handle *lhc)
676 struct ptlrpc_request *req = mdt_info_req(info);
679 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
680 if (req_xid_is_last(req)) {
681 reconstruct(info, lhc);
684 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
685 req->rq_export->exp_mdt_data.med_lcd->lcd_last_xid);
690 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
692 static inline int is_identity_get_disabled(struct upcall_cache *cache)
694 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
697 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
699 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
700 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
701 struct lustre_handle *lh,
703 ldlm_policy_data_t *policy,
704 const struct ldlm_res_id *res_id,
705 int flags, const __u64 *client_cookie)
712 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
713 mode, &flags, mdt_blocking_ast,
715 NULL, NULL, 0, NULL, client_cookie, lh);
716 return rc == ELDLM_OK ? 0 : -EIO;
719 static inline void mdt_fid_unlock(struct lustre_handle *lh,
722 ldlm_lock_decref(lh, mode);
725 extern mdl_mode_t mdt_mdl_lock_modes[];
726 extern ldlm_mode_t mdt_dlm_lock_modes[];
728 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
730 LASSERT(IS_PO2(mode));
731 return mdt_mdl_lock_modes[mode];
734 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
736 LASSERT(IS_PO2(mode));
737 return mdt_dlm_lock_modes[mode];
740 static inline struct lu_name *mdt_name(const struct lu_env *env,
741 char *name, int namelen)
743 struct lu_name *lname;
744 struct mdt_thread_info *mti;
746 LASSERT(namelen > 0);
747 /* trailing '\0' in buffer */
748 LASSERT(name[namelen] == '\0');
750 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
751 lname = &mti->mti_name;
752 lname->ln_name = name;
753 lname->ln_namelen = namelen;
757 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
758 struct lu_name *slname)
763 tlname->ln_name = slname->ln_name;
764 tlname->ln_namelen = slname->ln_namelen;
768 void mdt_enable_cos(struct mdt_device *, int);
769 int mdt_cos_is_enabled(struct mdt_device *);
772 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
773 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
774 int mdt_procfs_fini(struct mdt_device *mdt);
776 void mdt_time_start(const struct mdt_thread_info *info);
777 void mdt_time_end(const struct mdt_thread_info *info, int idx);
784 int mdt_ck_thread_start(struct mdt_device *mdt);
785 void mdt_ck_thread_stop(struct mdt_device *mdt);
786 void mdt_ck_timer_callback(unsigned long castmeharder);
787 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
789 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
790 const struct lu_fid *fid,
791 struct lustre_capa *capa)
793 struct md_capainfo *ci;
795 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
796 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
797 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
800 ci = md_capainfo(info->mti_env);
802 ci->mc_fid[offset] = fid;
803 ci->mc_capa[offset] = capa;
806 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
808 struct md_capainfo *ci = md_capainfo(info->mti_env);
813 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
816 if (!ci->mc_capa[i]) {
817 CERROR("no capa for index %d "DFID"\n",
818 i, PFID(ci->mc_fid[i]));
821 if (ci->mc_capa[i] == BYPASS_CAPA) {
822 CERROR("bypass for index %d "DFID"\n",
823 i, PFID(ci->mc_fid[i]));
826 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
830 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
832 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
834 #endif /* __KERNEL__ */