1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * lustre/mdt/mdt_internal.h
5 * Lustre Metadata Target (mdt) request handler
7 * Copyright (c) 2006 Cluster File Systems, Inc.
8 * Author: Peter Braam <braam@clusterfs.com>
9 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * Author: Phil Schwan <phil@clusterfs.com>
11 * Author: Mike Shaver <shaver@clusterfs.com>
12 * Author: Nikita Danilov <nikita@clusterfs.com>
13 * Author: Huang Hua <huanghua@clusterfs.com>
15 * This file is part of the Lustre file system, http://www.lustre.org
16 * Lustre is a trademark of Cluster File Systems, Inc.
18 * You may have signed or agreed to another license before downloading
19 * this software. If so, you are bound by the terms and conditions
20 * of that agreement, and the following does not apply to you. See the
21 * LICENSE file included with this distribution for more information.
23 * If you did not agree to a different license, then this copy of Lustre
24 * is open source software; you can redistribute it and/or modify it
25 * under the terms of version 2 of the GNU General Public License as
26 * published by the Free Software Foundation.
28 * In either case, Lustre is distributed in the hope that it will be
29 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
30 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 * license text for more details.
34 #ifndef _MDT_INTERNAL_H
35 #define _MDT_INTERNAL_H
37 #if defined(__KERNEL__)
40 * struct ptlrpc_client
42 #include <lustre_net.h>
45 * struct obd_connect_data
46 * struct lustre_handle
48 #include <lustre/lustre_idl.h>
49 #include <md_object.h>
50 #include <dt_object.h>
51 #include <lustre_fid.h>
52 #include <lustre_fld.h>
53 #include <lustre_req_layout.h>
54 /* LR_CLIENT_SIZE, etc. */
55 #include <lustre_disk.h>
56 #include <lustre_sec.h>
58 #include <lustre_idmap.h>
59 #include <lustre_eacl.h>
62 /* Data stored per client in the last_rcvd file. In le32 order. */
63 struct mdt_client_data {
64 __u8 mcd_uuid[40]; /* client UUID */
65 __u64 mcd_last_transno; /* last completed transaction ID */
66 __u64 mcd_last_xid; /* xid for the last transaction */
67 __u32 mcd_last_result; /* result from last RPC */
68 __u32 mcd_last_data; /* per-op data (disposition for open &c.) */
69 /* for MDS_CLOSE and MDS_DONE_WRITTING requests */
70 __u64 mcd_last_close_transno; /* last completed transaction ID */
71 __u64 mcd_last_close_xid; /* xid for the last transaction */
72 __u32 mcd_last_close_result; /* result from last RPC */
73 __u8 mcd_padding[LR_CLIENT_SIZE - 84];
76 static inline __u64 mcd_last_transno(struct mdt_client_data *mcd)
78 return max(mcd->mcd_last_transno, mcd->mcd_last_close_transno);
81 static inline __u64 mcd_last_xid(struct mdt_client_data *mcd)
83 return max(mcd->mcd_last_xid, mcd->mcd_last_close_xid);
86 /* check if request's xid is equal to last one or not*/
87 static inline int req_xid_is_last(struct ptlrpc_request *req)
89 struct mdt_client_data *mcd = req->rq_export->exp_mdt_data.med_mcd;
90 return (req->rq_xid == mcd->mcd_last_xid ||
91 req->rq_xid == mcd->mcd_last_close_xid);
94 /* copied from lr_server_data.
95 * mds data stored at the head of last_rcvd file. In le32 order. */
96 struct mdt_server_data {
97 __u8 msd_uuid[40]; /* server UUID */
98 __u64 msd_last_transno; /* last completed transaction ID */
99 __u64 msd_mount_count; /* incarnation number */
100 __u32 msd_feature_compat; /* compatible feature flags */
101 __u32 msd_feature_rocompat;/* read-only compatible feature flags */
102 __u32 msd_feature_incompat;/* incompatible feature flags */
103 __u32 msd_server_size; /* size of server data area */
104 __u32 msd_client_start; /* start of per-client data area */
105 __u16 msd_client_size; /* size of per-client data area */
106 //__u16 msd_subdir_count; /* number of subdirectories for objects */
107 //__u64 msd_catalog_oid; /* recovery catalog object id */
108 //__u32 msd_catalog_ogen; /* recovery catalog inode generation */
109 //__u8 msd_peeruuid[40]; /* UUID of MDS associated with this OST */
110 //__u32 msd_ost_index; /* index number of OST in LOV */
111 //__u32 msd_mdt_index; /* index number of MDT in LMV */
112 __u8 msd_padding[LR_SERVER_SIZE - 78];
116 /* file data for open files on MDS */
117 struct mdt_file_data {
118 struct portals_handle mfd_handle; /* must be first */
119 struct list_head mfd_list; /* protected by med_open_lock */
120 __u64 mfd_xid; /* xid of the open request */
121 struct lustre_handle mfd_old_handle; /* old handle in replay case */
122 int mfd_mode; /* open mode provided by client */
123 struct mdt_object *mfd_object; /* point to opened object */
128 struct md_device mdt_md_dev;
129 struct ptlrpc_service *mdt_regular_service;
130 struct ptlrpc_service *mdt_readpage_service;
131 struct ptlrpc_service *mdt_xmds_service;
132 struct ptlrpc_service *mdt_setattr_service;
133 struct ptlrpc_service *mdt_mdsc_service;
134 struct ptlrpc_service *mdt_mdss_service;
135 struct ptlrpc_service *mdt_dtss_service;
136 struct ptlrpc_service *mdt_fld_service;
137 /* DLM name-space for meta-data locks maintained by this server */
138 struct ldlm_namespace *mdt_namespace;
139 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
140 struct ptlrpc_client *mdt_ldlm_client;
141 /* underlying device */
142 struct md_device *mdt_child;
143 struct dt_device *mdt_bottom;
145 * Options bit-fields.
148 signed int mo_user_xattr :1,
154 /* mdt state flags */
155 __u32 mdt_fl_cfglog:1,
157 /* lock to pretect epoch and write count */
158 spinlock_t mdt_ioepoch_lock;
161 /* Transaction related stuff here */
162 spinlock_t mdt_transno_lock;
163 __u64 mdt_last_transno;
165 /* transaction callbacks */
166 struct dt_txn_callback mdt_txn_cb;
168 struct dt_object *mdt_last_rcvd;
170 /* these values should be updated from lov if necessary.
171 * or should be placed somewhere else. */
173 int mdt_max_cookiesize;
174 __u64 mdt_mount_count;
177 struct mdt_server_data mdt_msd;
178 spinlock_t mdt_client_bitmap_lock;
179 unsigned long mdt_client_bitmap[(LR_MAX_CLIENTS >> 3) / sizeof(long)];
181 struct upcall_cache *mdt_identity_cache;
184 rwlock_t mdt_sptlrpc_lock;
185 struct sptlrpc_rule_set mdt_sptlrpc_rset;
187 /* capability keys */
188 unsigned long mdt_capa_timeout;
190 struct dt_object *mdt_ck_obj;
191 unsigned long mdt_ck_timeout;
192 unsigned long mdt_ck_expiry;
193 cfs_timer_t mdt_ck_timer;
194 struct ptlrpc_thread mdt_ck_thread;
195 struct lustre_capa_key mdt_capa_keys[2];
196 unsigned int mdt_capa_conf:1;
198 cfs_proc_dir_entry_t *mdt_proc_entry;
199 struct lprocfs_stats *mdt_stats;
202 /*XXX copied from mds_internal.h */
203 #define MDT_SERVICE_WATCHDOG_TIMEOUT (obd_timeout * 1000)
204 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
205 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR)
208 struct lu_object_header mot_header;
209 struct md_object mot_obj;
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_SETATTR_LOCKED = 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 expilictly
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;
347 * Operation specification (currently create and lookup)
349 struct md_op_spec mti_spec;
353 * The following members will _NOT_ be initialized at all.
354 * DO NOT expect them to contain any valid value.
355 * They should be initialized explicitly by the user themselves.
358 /* XXX: If something is in a union, make sure they do not conflict */
360 struct lu_fid mti_tmp_fid1;
361 struct lu_fid mti_tmp_fid2;
362 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
363 * mdt_rename_lock() */
364 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
367 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
368 char ns_name[48]; /* for mdt_init0() */
369 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
370 struct kstatfs ksfs; /* for mdt_statfs() */
372 /* for mdt_readpage() */
373 struct lu_rdpg mti_rdpg;
374 /* for mdt_sendpage() */
375 struct l_wait_info mti_wait_info;
379 /* IO epoch related stuff. */
380 struct mdt_epoch *mti_epoch;
381 __u64 mti_replayepoch;
383 /* server and client data buffers */
384 struct mdt_server_data mti_msd;
385 struct mdt_client_data mti_mcd;
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;
395 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
396 void *data, int err);
397 struct mdt_commit_cb {
398 mdt_cb_t mdt_cb_func;
403 * Info allocated per-transaction.
405 #define MDT_MAX_COMMIT_CB 4
406 struct mdt_txn_info {
408 unsigned int txi_cb_count;
409 struct mdt_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
412 extern struct lu_context_key mdt_txn_key;
414 static inline void mdt_trans_add_cb(const struct thandle *th,
415 mdt_cb_t cb_func, void *cb_data)
417 struct mdt_txn_info *txi;
419 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
420 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
422 /* add new callback */
423 txi->txi_cb[txi->txi_cb_count].mdt_cb_func = cb_func;
424 txi->txi_cb[txi->txi_cb_count].mdt_cb_data = cb_data;
428 static inline struct md_device_operations *mdt_child_ops(struct mdt_device * m)
430 LASSERT(m->mdt_child);
431 return m->mdt_child->md_ops;
434 static inline struct md_object *mdt_object_child(struct mdt_object *o)
437 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
440 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
442 return info->mti_pill ? info->mti_pill->rc_req : NULL;
445 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
447 LASSERT(info->mti_exp);
448 return info->mti_exp->exp_connect_flags;
451 static inline void mdt_object_get(const struct lu_env *env,
452 struct mdt_object *o)
455 lu_object_get(&o->mot_obj.mo_lu);
459 static inline void mdt_object_put(const struct lu_env *env,
460 struct mdt_object *o)
463 lu_object_put(env, &o->mot_obj.mo_lu);
467 static inline int mdt_object_exists(const struct mdt_object *o)
469 return lu_object_exists(&o->mot_obj.mo_lu);
472 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
474 return lu_object_fid(&o->mot_obj.mo_lu);
478 static inline void mdt_export_evict(struct obd_export *exp)
480 class_fail_export(exp);
481 class_export_put(exp);
484 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
485 void mdt_set_disposition(struct mdt_thread_info *info,
486 struct ldlm_reply *rep, int flag);
487 void mdt_clear_disposition(struct mdt_thread_info *info,
488 struct ldlm_reply *rep, int flag);
490 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
491 ldlm_mode_t lm, const char *name,
494 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
497 int mdt_lock_setup(struct mdt_thread_info *info,
498 struct mdt_object *o,
499 struct mdt_lock_handle *lh);
501 int mdt_object_lock(struct mdt_thread_info *,
503 struct mdt_lock_handle *,
506 void mdt_object_unlock(struct mdt_thread_info *,
508 struct mdt_lock_handle *,
511 struct mdt_object *mdt_object_find(const struct lu_env *,
513 const struct lu_fid *);
514 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
515 const struct lu_fid *,
516 struct mdt_lock_handle *,
518 void mdt_object_unlock_put(struct mdt_thread_info *,
520 struct mdt_lock_handle *,
523 int mdt_close_unpack(struct mdt_thread_info *info);
524 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
525 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
526 void mdt_pack_size2body(struct mdt_thread_info *info,
527 struct mdt_object *o);
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 obd_device *obd,
544 svc_handler_t handler);
545 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
546 struct obd_device *);
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_pin(struct mdt_thread_info* info);
559 int mdt_lock_new_child(struct mdt_thread_info *info,
560 struct mdt_object *o,
561 struct mdt_lock_handle *child_lockh);
563 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
566 int mdt_reint_open(struct mdt_thread_info *info,
567 struct mdt_lock_handle *lhc);
569 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
570 const struct lustre_handle *);
571 int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o);
572 void mdt_sizeonmds_enable(struct mdt_thread_info *info, struct mdt_object *mo);
573 int mdt_sizeonmds_enabled(struct mdt_object *mo);
574 int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o);
575 int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o);
576 struct mdt_file_data *mdt_mfd_new(void);
577 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
578 void mdt_mfd_free(struct mdt_file_data *mfd);
579 int mdt_close(struct mdt_thread_info *info);
580 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
582 int mdt_done_writing(struct mdt_thread_info *info);
583 void mdt_shrink_reply(struct mdt_thread_info *info);
584 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
585 const struct md_attr *);
586 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
587 struct thandle* mdt_trans_start(const struct lu_env *env,
588 struct mdt_device *mdt, int credits);
589 void mdt_trans_stop(const struct lu_env *env,
590 struct mdt_device *mdt, struct thandle *th);
591 int mdt_record_write(const struct lu_env *env,
592 struct dt_object *dt, const struct lu_buf *buf,
593 loff_t *pos, struct thandle *th);
594 int mdt_record_read(const struct lu_env *env,
595 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
597 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
598 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
599 const void *area, ssize_t len);
601 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
603 int mdt_check_ucred(struct mdt_thread_info *);
604 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
605 int mdt_init_ucred_reint(struct mdt_thread_info *);
606 void mdt_exit_ucred(struct mdt_thread_info *);
609 int mdt_init_idmap(struct mdt_thread_info *);
611 void mdt_cleanup_idmap(struct mdt_export_data *);
613 int mdt_handle_idmap(struct mdt_thread_info *);
615 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
616 struct ptlrpc_user_desc *);
618 void mdt_body_reverse_idmap(struct mdt_thread_info *,
621 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
622 struct mdt_remote_perm *);
624 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
626 static inline struct mdt_device *mdt_dev(struct lu_device *d)
628 // LASSERT(lu_device_is_mdt(d));
629 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
632 /* mdt/mdt_identity.c */
633 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
635 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
637 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
639 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
641 void mdt_flush_identity(struct upcall_cache *, int);
643 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
645 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
647 extern struct lu_context_key mdt_thread_key;
648 /* debug issues helper starts here*/
649 static inline void mdt_fail_write(const struct lu_env *env,
650 struct dt_device *dd, int id)
652 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
653 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
655 dd->dd_ops->dt_ro(env, dd);
656 /* We set FAIL_ONCE because we never "un-fail" a device */
660 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
662 return &req->rq_export->exp_mdt_data;
665 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
666 struct mdt_lock_handle *lhc);
667 static inline int mdt_check_resent(struct mdt_thread_info *info,
668 mdt_reconstruct_t reconstruct,
669 struct mdt_lock_handle *lhc)
671 struct ptlrpc_request *req = mdt_info_req(info);
674 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
675 if (req_xid_is_last(req)) {
676 reconstruct(info, lhc);
679 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
680 req->rq_export->exp_mdt_data.med_mcd->mcd_last_xid);
685 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
687 static inline int is_identity_get_disabled(struct upcall_cache *cache)
689 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
692 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
693 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
694 struct lustre_handle *lh,
696 ldlm_policy_data_t *policy,
697 const struct ldlm_res_id *res_id,
705 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
706 mode, &flags, ldlm_blocking_ast,
707 ldlm_completion_ast, NULL, NULL,
709 return rc == ELDLM_OK ? 0 : -EIO;
712 static inline void mdt_fid_unlock(struct lustre_handle *lh,
715 ldlm_lock_decref(lh, mode);
718 extern mdl_mode_t mdt_mdl_lock_modes[];
719 extern ldlm_mode_t mdt_dlm_lock_modes[];
721 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
723 LASSERT(IS_PO2(mode));
724 return mdt_mdl_lock_modes[mode];
727 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
729 LASSERT(IS_PO2(mode));
730 return mdt_dlm_lock_modes[mode];
733 static inline struct lu_name *mdt_name(const struct lu_env *env,
734 char *name, int namelen)
736 struct lu_name *lname;
737 struct mdt_thread_info *mti;
739 LASSERT(namelen > 0);
740 /* trailing '\0' in buffer */
741 LASSERT(name[namelen] == '\0');
743 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
744 lname = &mti->mti_name;
745 lname->ln_name = name;
746 lname->ln_namelen = namelen;
750 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
751 struct lu_name *slname)
756 tlname->ln_name = slname->ln_name;
757 tlname->ln_namelen = slname->ln_namelen;
762 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
763 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
764 int mdt_procfs_fini(struct mdt_device *mdt);
766 void mdt_time_start(const struct mdt_thread_info *info);
767 void mdt_time_end(const struct mdt_thread_info *info, int idx);
774 int mdt_ck_thread_start(struct mdt_device *mdt);
775 void mdt_ck_thread_stop(struct mdt_device *mdt);
776 void mdt_ck_timer_callback(unsigned long castmeharder);
777 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
779 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
780 const struct lu_fid *fid,
781 struct lustre_capa *capa)
783 struct mdt_device *dev = info->mti_mdt;
784 struct md_capainfo *ci;
786 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
787 if (!dev->mdt_opts.mo_mds_capa)
790 ci = md_capainfo(info->mti_env);
792 ci->mc_fid[offset] = fid;
793 ci->mc_capa[offset] = capa;
796 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
798 struct md_capainfo *ci = md_capainfo(info->mti_env);
803 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
806 if (!ci->mc_capa[i]) {
807 CERROR("no capa for index %d "DFID"\n",
808 i, PFID(ci->mc_fid[i]));
811 if (ci->mc_capa[i] == BYPASS_CAPA) {
812 CERROR("bypass for index %d "DFID"\n",
813 i, PFID(ci->mc_fid[i]));
816 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
820 #endif /* __KERNEL__ */