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;
189 /* Lock to protect create_data */
190 cfs_semaphore_t mot_lov_sem;
193 enum mdt_object_flags {
194 /** SOM attributes are changed. */
195 MOF_SOM_CHANGE = (1 << 0),
197 * The SOM recovery state for mdt object.
198 * This state is an in-memory equivalent of an absent SOM EA, used
199 * instead of invalidating SOM EA while IOEpoch is still opened when
200 * a client eviction occurs or a client fails to obtain SOM attributes.
201 * It indicates that the last IOEpoch holder will need to obtain SOM
202 * attributes under [0;EOF] extent lock to flush all the client's
203 * cached of evicted from MDS clients (but not necessary evicted from
204 * OST) before taking ost attributes.
206 MOF_SOM_RECOV = (1 << 1),
207 /** File has been just created. */
208 MOF_SOM_CREATED = (1 << 2),
209 /** lov object has been created. */
210 MOF_LOV_CREATED = (1 << 3),
213 struct mdt_lock_handle {
214 /* Lock type, reg for cross-ref use or pdo lock. */
218 struct lustre_handle mlh_reg_lh;
219 ldlm_mode_t mlh_reg_mode;
222 struct lustre_handle mlh_pdo_lh;
223 ldlm_mode_t mlh_pdo_mode;
224 unsigned int mlh_pdo_hash;
228 MDT_LH_PARENT, /* parent lockh */
229 MDT_LH_CHILD, /* child lockh */
230 MDT_LH_OLD, /* old lockh for rename */
231 MDT_LH_NEW, /* new lockh for rename */
232 MDT_LH_RMT, /* used for return lh to caller */
241 struct mdt_reint_record {
242 mdt_reint_t rr_opcode;
243 const struct lustre_handle *rr_handle;
244 const struct lu_fid *rr_fid1;
245 const struct lu_fid *rr_fid2;
250 const void *rr_eadata;
253 const struct llog_cookie *rr_logcookies;
257 enum mdt_reint_flag {
258 MRF_SETATTR_LOCKED = 1 << 0,
262 * Common data shared by mdt-level handlers. This is allocated per-thread to
263 * reduce stack consumption.
265 struct mdt_thread_info {
268 * The following members will be filled explicitly
269 * with specific data in mdt_thread_info_init().
271 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
272 * request handling may migrate from one server thread to another.
274 struct req_capsule *mti_pill;
276 /* although we have export in req, there are cases when it is not
277 * available, e.g. closing files upon export destroy */
278 struct obd_export *mti_exp;
280 * A couple of lock handles.
282 struct mdt_lock_handle mti_lh[MDT_LH_NR];
284 struct mdt_device *mti_mdt;
285 const struct lu_env *mti_env;
288 * Additional fail id that can be set by handler. Passed to
289 * target_send_reply().
293 /* transaction number of current request */
299 * The following members will be filled expilictly
300 * with zero in mdt_thread_info_init(). These members may be used
307 struct md_attr mti_attr;
309 * Body for "habeo corpus" operations.
311 const struct mdt_body *mti_body;
313 * Host object. This is released at the end of mdt_handler().
315 struct mdt_object *mti_object;
317 * Lock request for "habeo clavis" operations.
319 const struct ldlm_request *mti_dlm_req;
321 __u32 mti_has_trans:1, /* has txn already? */
325 /* opdata for mdt_reint_open(), has the same as
326 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
327 * value onto disk for recovery when mdt_trans_stop_cb() is called.
333 * The following members will be filled explicitly
334 * with zero in mdt_reint_unpack(), because they are only used
335 * by reint requests (including mdt_reint_open()).
339 * reint record. contains information for reint operations.
341 struct mdt_reint_record mti_rr;
343 /** md objects included in operation */
344 struct mdt_object *mti_mos;
345 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
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 cfs_kstatfs_t 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 struct md_som_data data;
383 /* IO epoch related stuff. */
384 struct mdt_ioepoch *mti_ioepoch;
385 __u64 mti_replayepoch;
387 /* server and client data buffers */
388 struct lr_server_data mti_lsd;
389 struct lsd_client_data mti_lcd;
391 struct txn_param mti_txn_param;
392 struct lu_buf mti_buf;
393 struct lustre_capa_key mti_capa_key;
395 /* Ops object filename */
396 struct lu_name mti_name;
397 struct md_attr mti_tmp_attr;
400 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
401 void *data, int err);
402 struct mdt_commit_cb {
403 mdt_cb_t mdt_cb_func;
408 MDT_TXN_CAPA_KEYS_WRITE_OP,
409 MDT_TXN_LAST_RCVD_WRITE_OP,
413 * Info allocated per-transaction.
415 #define MDT_MAX_COMMIT_CB 4
416 struct mdt_txn_info {
418 unsigned int txi_cb_count;
419 struct lut_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
422 extern struct lu_context_key mdt_txn_key;
424 static inline void mdt_trans_add_cb(const struct thandle *th,
425 lut_cb_t cb_func, void *cb_data)
427 struct mdt_txn_info *txi;
429 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
430 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
432 /* add new callback */
433 txi->txi_cb[txi->txi_cb_count].lut_cb_func = cb_func;
434 txi->txi_cb[txi->txi_cb_count].lut_cb_data = cb_data;
438 static inline const struct md_device_operations *
439 mdt_child_ops(struct mdt_device * m)
441 LASSERT(m->mdt_child);
442 return m->mdt_child->md_ops;
445 static inline struct md_object *mdt_object_child(struct mdt_object *o)
448 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
451 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
453 return info->mti_pill ? info->mti_pill->rc_req : NULL;
456 static inline int req_is_replay(struct ptlrpc_request *req)
458 LASSERT(req->rq_reqmsg);
459 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
462 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
464 LASSERT(info->mti_exp);
465 return info->mti_exp->exp_connect_flags;
468 static inline void mdt_object_get(const struct lu_env *env,
469 struct mdt_object *o)
472 lu_object_get(&o->mot_obj.mo_lu);
476 static inline void mdt_object_put(const struct lu_env *env,
477 struct mdt_object *o)
480 lu_object_put(env, &o->mot_obj.mo_lu);
484 static inline int mdt_object_exists(const struct mdt_object *o)
486 return lu_object_exists(&o->mot_obj.mo_lu);
489 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
491 return lu_object_fid(&o->mot_obj.mo_lu);
494 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
496 return mdt->mdt_md_dev.md_lu_dev.ld_site;
499 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
501 return lu_site2md(mdt_lu_site(mdt));
504 static inline void mdt_export_evict(struct obd_export *exp)
506 class_fail_export(exp);
507 class_export_put(exp);
510 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
511 void mdt_set_disposition(struct mdt_thread_info *info,
512 struct ldlm_reply *rep, int flag);
513 void mdt_clear_disposition(struct mdt_thread_info *info,
514 struct ldlm_reply *rep, int flag);
516 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
517 ldlm_mode_t lm, const char *name,
520 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
523 int mdt_lock_setup(struct mdt_thread_info *info,
524 struct mdt_object *o,
525 struct mdt_lock_handle *lh);
527 int mdt_object_lock(struct mdt_thread_info *,
529 struct mdt_lock_handle *,
532 void mdt_object_unlock(struct mdt_thread_info *,
534 struct mdt_lock_handle *,
537 struct mdt_object *mdt_object_find(const struct lu_env *,
539 const struct lu_fid *);
540 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
541 const struct lu_fid *,
542 struct mdt_lock_handle *,
544 void mdt_object_unlock_put(struct mdt_thread_info *,
546 struct mdt_lock_handle *,
549 int mdt_close_unpack(struct mdt_thread_info *info);
550 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
551 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
552 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
553 const struct lu_attr *attr, const struct lu_fid *fid);
555 int mdt_getxattr(struct mdt_thread_info *info);
556 int mdt_reint_setxattr(struct mdt_thread_info *info,
557 struct mdt_lock_handle *lh);
559 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
560 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
562 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
563 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
564 struct mdt_lock_handle *lhc);
566 extern void target_recovery_fini(struct obd_device *obd);
567 extern void target_recovery_init(struct lu_target *lut,
568 svc_handler_t handler);
569 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
570 struct obd_device *, struct lustre_sb_info *lsi);
571 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
573 int mdt_client_del(const struct lu_env *env,
574 struct mdt_device *mdt);
575 int mdt_client_add(const struct lu_env *env,
576 struct mdt_device *mdt,
578 int mdt_client_new(const struct lu_env *env,
579 struct mdt_device *mdt);
581 int mdt_export_stats_init(struct obd_device *obd,
582 struct obd_export *exp,
585 int mdt_pin(struct mdt_thread_info* info);
587 int mdt_lock_new_child(struct mdt_thread_info *info,
588 struct mdt_object *o,
589 struct mdt_lock_handle *child_lockh);
591 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
594 int mdt_reint_open(struct mdt_thread_info *info,
595 struct mdt_lock_handle *lhc);
597 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
598 const struct lustre_handle *);
601 MDT_IOEPOCH_CLOSED = 0,
602 MDT_IOEPOCH_OPENED = 1,
603 MDT_IOEPOCH_GETATTR = 2,
611 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
613 int mdt_object_is_som_enabled(struct mdt_object *mo);
614 int mdt_write_get(struct mdt_object *o);
615 void mdt_write_put(struct mdt_object *o);
616 int mdt_write_read(struct mdt_object *o);
617 struct mdt_file_data *mdt_mfd_new(void);
618 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
619 void mdt_mfd_free(struct mdt_file_data *mfd);
620 int mdt_close(struct mdt_thread_info *info);
621 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
622 struct md_attr *ma, int flags);
623 int mdt_done_writing(struct mdt_thread_info *info);
624 void mdt_shrink_reply(struct mdt_thread_info *info);
625 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
626 const struct md_attr *);
627 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
629 void mdt_trans_credit_init(const struct lu_env *env,
630 struct mdt_device *mdt,
632 struct thandle* mdt_trans_start(const struct lu_env *env,
633 struct mdt_device *mdt);
634 void mdt_trans_stop(const struct lu_env *env,
635 struct mdt_device *mdt, struct thandle *th);
636 int mdt_record_write(const struct lu_env *env,
637 struct dt_object *dt, const struct lu_buf *buf,
638 loff_t *pos, struct thandle *th);
639 int mdt_record_read(const struct lu_env *env,
640 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
642 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
643 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
644 const void *area, ssize_t len);
646 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
648 int mdt_check_ucred(struct mdt_thread_info *);
649 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
650 int mdt_init_ucred_reint(struct mdt_thread_info *);
651 void mdt_exit_ucred(struct mdt_thread_info *);
652 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
653 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
654 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
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": cfs_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_target_data.ted_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);
825 void mdt_counter_incr(struct obd_export *exp, int opcode);
826 void mdt_stats_counter_init(struct lprocfs_stats *stats);
827 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
828 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
829 int mdt_procfs_fini(struct mdt_device *mdt);
831 void mdt_time_start(const struct mdt_thread_info *info);
832 void mdt_time_end(const struct mdt_thread_info *info, int idx);
835 int mdt_ck_thread_start(struct mdt_device *mdt);
836 void mdt_ck_thread_stop(struct mdt_device *mdt);
837 void mdt_ck_timer_callback(unsigned long castmeharder);
838 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
840 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
841 const struct lu_fid *fid,
842 struct lustre_capa *capa)
844 struct md_capainfo *ci;
846 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
847 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
848 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
851 ci = md_capainfo(info->mti_env);
853 ci->mc_fid[offset] = fid;
854 ci->mc_capa[offset] = capa;
857 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
859 struct md_capainfo *ci = md_capainfo(info->mti_env);
864 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
867 if (!ci->mc_capa[i]) {
868 CERROR("no capa for index %d "DFID"\n",
869 i, PFID(ci->mc_fid[i]));
872 if (ci->mc_capa[i] == BYPASS_CAPA) {
873 CERROR("bypass for index %d "DFID"\n",
874 i, PFID(ci->mc_fid[i]));
877 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
881 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
883 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
885 #endif /* __KERNEL__ */