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, 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
38 * lustre/mdt/mdt_internal.h
40 * Lustre Metadata Target (mdt) request handler
42 * Author: Peter Braam <braam@clusterfs.com>
43 * Author: Andreas Dilger <adilger@clusterfs.com>
44 * Author: Phil Schwan <phil@clusterfs.com>
45 * Author: Mike Shaver <shaver@clusterfs.com>
46 * Author: Nikita Danilov <nikita@clusterfs.com>
47 * Author: Huang Hua <huanghua@clusterfs.com>
50 #ifndef _MDT_INTERNAL_H
51 #define _MDT_INTERNAL_H
53 #if defined(__KERNEL__)
56 * struct ptlrpc_client
58 #include <lustre_net.h>
61 * struct obd_connect_data
62 * struct lustre_handle
64 #include <lustre/lustre_idl.h>
65 #include <lustre_disk.h>
66 #include <lu_target.h>
67 #include <md_object.h>
68 #include <lustre_fid.h>
69 #include <lustre_fld.h>
70 #include <lustre_req_layout.h>
71 #include <lustre_sec.h>
73 #include <lustre_idmap.h>
74 #include <lustre_eacl.h>
75 #include <lustre_fsfilt.h>
77 /* check if request's xid is equal to last one or not*/
78 static inline int req_xid_is_last(struct ptlrpc_request *req)
80 struct lsd_client_data *lcd = req->rq_export->exp_target_data.ted_lcd;
81 return (req->rq_xid == lcd->lcd_last_xid ||
82 req->rq_xid == lcd->lcd_last_close_xid);
86 /* file data for open files on MDS */
87 struct mdt_file_data {
88 struct portals_handle mfd_handle; /* must be first */
89 cfs_list_t mfd_list; /* protected by med_open_lock */
90 __u64 mfd_xid; /* xid of the open request */
91 struct lustre_handle mfd_old_handle; /* old handle in replay case */
92 int mfd_mode; /* open mode provided by client */
93 struct mdt_object *mfd_object; /* point to opened object */
96 /* mdt state flag bits */
97 #define MDT_FL_CFGLOG 0
98 #define MDT_FL_SYNCED 1
102 struct md_device mdt_md_dev;
103 struct ptlrpc_service *mdt_regular_service;
104 struct ptlrpc_service *mdt_readpage_service;
105 struct ptlrpc_service *mdt_xmds_service;
106 struct ptlrpc_service *mdt_setattr_service;
107 struct ptlrpc_service *mdt_mdsc_service;
108 struct ptlrpc_service *mdt_mdss_service;
109 struct ptlrpc_service *mdt_dtss_service;
110 struct ptlrpc_service *mdt_fld_service;
111 /* DLM name-space for meta-data locks maintained by this server */
112 struct ldlm_namespace *mdt_namespace;
113 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
114 struct ptlrpc_client *mdt_ldlm_client;
115 /* underlying device */
116 struct md_device *mdt_child;
117 struct dt_device *mdt_bottom;
119 struct lu_target mdt_lut;
121 * Options bit-fields.
124 signed int mo_user_xattr :1,
131 /* mdt state flags */
132 unsigned long mdt_state;
133 /* lock to protect IOepoch */
134 cfs_spinlock_t mdt_ioepoch_lock;
137 /* transaction callbacks */
138 struct dt_txn_callback mdt_txn_cb;
140 /* these values should be updated from lov if necessary.
141 * or should be placed somewhere else. */
143 int mdt_max_cookiesize;
145 struct upcall_cache *mdt_identity_cache;
148 cfs_rwlock_t mdt_sptlrpc_lock;
149 struct sptlrpc_rule_set mdt_sptlrpc_rset;
151 /* capability keys */
152 unsigned long mdt_capa_timeout;
154 struct dt_object *mdt_ck_obj;
155 unsigned long mdt_ck_timeout;
156 unsigned long mdt_ck_expiry;
157 cfs_timer_t mdt_ck_timer;
158 struct ptlrpc_thread mdt_ck_thread;
159 struct lustre_capa_key mdt_capa_keys[2];
160 unsigned int mdt_capa_conf:1,
164 uid_t mdt_squash_uid;
165 gid_t mdt_squash_gid;
166 cfs_list_t mdt_nosquash_nids;
167 char *mdt_nosquash_str;
168 int mdt_nosquash_strlen;
169 cfs_rw_semaphore_t mdt_squash_sem;
171 cfs_proc_dir_entry_t *mdt_proc_entry;
172 struct lprocfs_stats *mdt_stats;
174 struct rename_stats mdt_rename_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 OBD_INCOMPAT_LMM_VER | OBD_INCOMPAT_MULTI_OI)
182 #define MDT_COS_DEFAULT (0)
185 struct lu_object_header mot_header;
186 struct md_object mot_obj;
189 int mot_ioepoch_count;
191 /* Lock to protect object's IO epoch. */
192 cfs_semaphore_t mot_ioepoch_sem;
193 /* Lock to protect create_data */
194 cfs_semaphore_t mot_lov_sem;
197 enum mdt_object_flags {
198 /** SOM attributes are changed. */
199 MOF_SOM_CHANGE = (1 << 0),
201 * The SOM recovery state for mdt object.
202 * This state is an in-memory equivalent of an absent SOM EA, used
203 * instead of invalidating SOM EA while IOEpoch is still opened when
204 * a client eviction occurs or a client fails to obtain SOM attributes.
205 * It indicates that the last IOEpoch holder will need to obtain SOM
206 * attributes under [0;EOF] extent lock to flush all the client's
207 * cached of evicted from MDS clients (but not necessary evicted from
208 * OST) before taking ost attributes.
210 MOF_SOM_RECOV = (1 << 1),
211 /** File has been just created. */
212 MOF_SOM_CREATED = (1 << 2),
213 /** lov object has been created. */
214 MOF_LOV_CREATED = (1 << 3),
217 struct mdt_lock_handle {
218 /* Lock type, reg for cross-ref use or pdo lock. */
222 struct lustre_handle mlh_reg_lh;
223 ldlm_mode_t mlh_reg_mode;
226 struct lustre_handle mlh_pdo_lh;
227 ldlm_mode_t mlh_pdo_mode;
228 unsigned int mlh_pdo_hash;
232 MDT_LH_PARENT, /* parent lockh */
233 MDT_LH_CHILD, /* child lockh */
234 MDT_LH_OLD, /* old lockh for rename */
235 MDT_LH_NEW, /* new lockh for rename */
236 MDT_LH_RMT, /* used for return lh to caller */
245 struct mdt_reint_record {
246 mdt_reint_t rr_opcode;
247 const struct lustre_handle *rr_handle;
248 const struct lu_fid *rr_fid1;
249 const struct lu_fid *rr_fid2;
254 const void *rr_eadata;
257 const struct llog_cookie *rr_logcookies;
261 enum mdt_reint_flag {
262 MRF_OPEN_TRUNC = 1 << 0,
266 * Common data shared by mdt-level handlers. This is allocated per-thread to
267 * reduce stack consumption.
269 struct mdt_thread_info {
272 * The following members will be filled explicitly
273 * with specific data in mdt_thread_info_init().
275 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
276 * request handling may migrate from one server thread to another.
278 struct req_capsule *mti_pill;
280 /* although we have export in req, there are cases when it is not
281 * available, e.g. closing files upon export destroy */
282 struct obd_export *mti_exp;
284 * A couple of lock handles.
286 struct mdt_lock_handle mti_lh[MDT_LH_NR];
288 struct mdt_device *mti_mdt;
289 const struct lu_env *mti_env;
292 * Additional fail id that can be set by handler. Passed to
293 * target_send_reply().
297 /* transaction number of current request */
303 * The following members will be filled expilictly
304 * with zero in mdt_thread_info_init(). These members may be used
311 struct md_attr mti_attr;
313 * Body for "habeo corpus" operations.
315 const struct mdt_body *mti_body;
317 * Host object. This is released at the end of mdt_handler().
319 struct mdt_object *mti_object;
321 * Lock request for "habeo clavis" operations.
323 const struct ldlm_request *mti_dlm_req;
325 __u32 mti_has_trans:1, /* has txn already? */
329 /* opdata for mdt_reint_open(), has the same as
330 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
331 * value onto disk for recovery when mdt_trans_stop_cb() is called.
337 * The following members will be filled explicitly
338 * with zero in mdt_reint_unpack(), because they are only used
339 * by reint requests (including mdt_reint_open()).
343 * reint record. contains information for reint operations.
345 struct mdt_reint_record mti_rr;
347 /** md objects included in operation */
348 struct mdt_object *mti_mos;
349 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
351 * Operation specification (currently create and lookup)
353 struct md_op_spec mti_spec;
357 * The following members will _NOT_ be initialized at all.
358 * DO NOT expect them to contain any valid value.
359 * They should be initialized explicitly by the user themselves.
362 /* XXX: If something is in a union, make sure they do not conflict */
364 struct lu_fid mti_tmp_fid1;
365 struct lu_fid mti_tmp_fid2;
366 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
367 * mdt_rename_lock() */
368 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
371 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
372 char ns_name[48]; /* for mdt_init0() */
373 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
374 cfs_kstatfs_t ksfs; /* for mdt_statfs() */
376 /* for mdt_readpage() */
377 struct lu_rdpg mti_rdpg;
378 /* for mdt_sendpage() */
379 struct l_wait_info mti_wait_info;
383 struct md_som_data data;
387 /* IO epoch related stuff. */
388 struct mdt_ioepoch *mti_ioepoch;
389 __u64 mti_replayepoch;
391 /* server and client data buffers */
392 struct lr_server_data mti_lsd;
393 struct lsd_client_data mti_lcd;
395 struct lu_buf mti_buf;
396 struct lustre_capa_key mti_capa_key;
398 /* Ops object filename */
399 struct lu_name mti_name;
400 struct md_attr mti_tmp_attr;
403 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
404 void *data, int err);
405 struct mdt_commit_cb {
406 mdt_cb_t mdt_cb_func;
411 MDT_TXN_CAPA_KEYS_WRITE_OP,
412 MDT_TXN_LAST_RCVD_WRITE_OP,
415 static inline const struct md_device_operations *
416 mdt_child_ops(struct mdt_device * m)
418 LASSERT(m->mdt_child);
419 return m->mdt_child->md_ops;
422 static inline struct md_object *mdt_object_child(struct mdt_object *o)
425 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
428 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
430 return info->mti_pill ? info->mti_pill->rc_req : NULL;
433 static inline int req_is_replay(struct ptlrpc_request *req)
435 LASSERT(req->rq_reqmsg);
436 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
439 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
441 LASSERT(info->mti_exp);
442 return info->mti_exp->exp_connect_flags;
445 static inline void mdt_object_get(const struct lu_env *env,
446 struct mdt_object *o)
449 lu_object_get(&o->mot_obj.mo_lu);
453 static inline void mdt_object_put(const struct lu_env *env,
454 struct mdt_object *o)
457 lu_object_put(env, &o->mot_obj.mo_lu);
461 static inline int mdt_object_exists(const struct mdt_object *o)
463 return lu_object_exists(&o->mot_obj.mo_lu);
466 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
468 return lu_object_fid(&o->mot_obj.mo_lu);
471 static inline int mdt_object_obf(const struct mdt_object *o)
473 return lu_fid_eq(mdt_object_fid(o), &LU_OBF_FID);
476 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
478 return mdt->mdt_md_dev.md_lu_dev.ld_site;
481 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
483 return lu_site2md(mdt_lu_site(mdt));
486 static inline void mdt_export_evict(struct obd_export *exp)
488 class_fail_export(exp);
489 class_export_put(exp);
492 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
493 void mdt_set_disposition(struct mdt_thread_info *info,
494 struct ldlm_reply *rep, int flag);
495 void mdt_clear_disposition(struct mdt_thread_info *info,
496 struct ldlm_reply *rep, int flag);
498 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
499 ldlm_mode_t lm, const char *name,
502 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
505 int mdt_lock_setup(struct mdt_thread_info *info,
506 struct mdt_object *o,
507 struct mdt_lock_handle *lh);
509 int mdt_object_lock(struct mdt_thread_info *,
511 struct mdt_lock_handle *,
514 void mdt_object_unlock(struct mdt_thread_info *,
516 struct mdt_lock_handle *,
519 struct mdt_object *mdt_object_find(const struct lu_env *,
521 const struct lu_fid *);
522 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
523 const struct lu_fid *,
524 struct mdt_lock_handle *,
526 void mdt_object_unlock_put(struct mdt_thread_info *,
528 struct mdt_lock_handle *,
531 void mdt_client_compatibility(struct mdt_thread_info *info);
533 int mdt_close_unpack(struct mdt_thread_info *info);
534 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
535 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
536 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
537 const struct lu_attr *attr, const struct lu_fid *fid);
539 int mdt_getxattr(struct mdt_thread_info *info);
540 int mdt_reint_setxattr(struct mdt_thread_info *info,
541 struct mdt_lock_handle *lh);
543 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
544 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
546 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
547 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
548 struct mdt_lock_handle *lhc);
550 extern void target_recovery_fini(struct obd_device *obd);
551 extern void target_recovery_init(struct lu_target *lut,
552 svc_handler_t handler);
553 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
554 struct obd_device *, struct lustre_sb_info *lsi);
555 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
557 int mdt_client_del(const struct lu_env *env,
558 struct mdt_device *mdt);
559 int mdt_client_add(const struct lu_env *env,
560 struct mdt_device *mdt,
562 int mdt_client_new(const struct lu_env *env,
563 struct mdt_device *mdt);
565 int mdt_export_stats_init(struct obd_device *obd,
566 struct obd_export *exp,
569 int mdt_pin(struct mdt_thread_info* info);
571 int mdt_lock_new_child(struct mdt_thread_info *info,
572 struct mdt_object *o,
573 struct mdt_lock_handle *child_lockh);
575 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
578 int mdt_reint_open(struct mdt_thread_info *info,
579 struct mdt_lock_handle *lhc);
581 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
582 const struct lustre_handle *);
585 MDT_IOEPOCH_CLOSED = 0,
586 MDT_IOEPOCH_OPENED = 1,
587 MDT_IOEPOCH_GETATTR = 2,
595 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
597 int mdt_object_is_som_enabled(struct mdt_object *mo);
598 int mdt_write_get(struct mdt_object *o);
599 void mdt_write_put(struct mdt_object *o);
600 int mdt_write_read(struct mdt_object *o);
601 struct mdt_file_data *mdt_mfd_new(void);
602 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
603 void mdt_mfd_free(struct mdt_file_data *mfd);
604 int mdt_close(struct mdt_thread_info *info);
605 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
606 struct md_attr *ma, int flags);
607 int mdt_done_writing(struct mdt_thread_info *info);
608 void mdt_shrink_reply(struct mdt_thread_info *info);
609 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
610 const struct md_attr *);
611 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
613 struct thandle *mdt_trans_create(const struct lu_env *env,
614 struct mdt_device *mdt);
615 int mdt_trans_start(const struct lu_env *env, struct mdt_device *mdt,
617 void mdt_trans_stop(const struct lu_env *env,
618 struct mdt_device *mdt, struct thandle *th);
619 int mdt_record_write(const struct lu_env *env,
620 struct dt_object *dt, const struct lu_buf *buf,
621 loff_t *pos, struct thandle *th);
622 int mdt_record_read(const struct lu_env *env,
623 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
625 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
626 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
627 const void *area, ssize_t len);
629 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
631 int mdt_check_ucred(struct mdt_thread_info *);
632 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
633 int mdt_init_ucred_reint(struct mdt_thread_info *);
634 void mdt_exit_ucred(struct mdt_thread_info *);
635 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
636 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
637 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
641 int mdt_init_sec_level(struct mdt_thread_info *);
642 int mdt_init_idmap(struct mdt_thread_info *);
643 void mdt_cleanup_idmap(struct mdt_export_data *);
644 int mdt_handle_idmap(struct mdt_thread_info *);
645 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
646 struct ptlrpc_user_desc *);
647 void mdt_body_reverse_idmap(struct mdt_thread_info *,
649 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
650 struct mdt_remote_perm *);
651 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
653 static inline struct mdt_device *mdt_dev(struct lu_device *d)
655 // LASSERT(lu_device_is_mdt(d));
656 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
659 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
661 struct lu_object *lo;
662 struct mdt_device *mdt = mdt_dev(mo->mot_obj.mo_lu.lo_dev);
664 lo = lu_object_locate(mo->mot_obj.mo_lu.lo_header,
665 mdt->mdt_bottom->dd_lu_dev.ld_type);
669 /* mdt/mdt_identity.c */
670 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
672 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
674 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
676 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
678 void mdt_flush_identity(struct upcall_cache *, int);
680 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
682 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
684 extern struct lu_context_key mdt_thread_key;
685 /* debug issues helper starts here*/
686 static inline void mdt_fail_write(const struct lu_env *env,
687 struct dt_device *dd, int id)
689 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
690 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
692 dd->dd_ops->dt_ro(env, dd);
693 /* We set FAIL_ONCE because we never "un-fail" a device */
697 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
699 return &req->rq_export->exp_mdt_data;
702 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
703 struct mdt_lock_handle *lhc);
704 static inline int mdt_check_resent(struct mdt_thread_info *info,
705 mdt_reconstruct_t reconstruct,
706 struct mdt_lock_handle *lhc)
708 struct ptlrpc_request *req = mdt_info_req(info);
711 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
712 if (req_xid_is_last(req)) {
713 reconstruct(info, lhc);
716 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
717 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
722 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
724 static inline int is_identity_get_disabled(struct upcall_cache *cache)
726 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
729 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
731 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
732 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
733 struct lustre_handle *lh,
735 ldlm_policy_data_t *policy,
736 const struct ldlm_res_id *res_id,
737 int flags, const __u64 *client_cookie)
744 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
745 mode, &flags, mdt_blocking_ast,
746 ldlm_completion_ast, NULL, NULL, 0,
748 return rc == ELDLM_OK ? 0 : -EIO;
751 static inline void mdt_fid_unlock(struct lustre_handle *lh,
754 ldlm_lock_decref(lh, mode);
757 extern mdl_mode_t mdt_mdl_lock_modes[];
758 extern ldlm_mode_t mdt_dlm_lock_modes[];
760 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
762 LASSERT(IS_PO2(mode));
763 return mdt_mdl_lock_modes[mode];
766 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
768 LASSERT(IS_PO2(mode));
769 return mdt_dlm_lock_modes[mode];
772 static inline struct lu_name *mdt_name(const struct lu_env *env,
773 char *name, int namelen)
775 struct lu_name *lname;
776 struct mdt_thread_info *mti;
778 LASSERT(namelen > 0);
779 /* trailing '\0' in buffer */
780 LASSERT(name[namelen] == '\0');
782 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
783 lname = &mti->mti_name;
784 lname->ln_name = name;
785 lname->ln_namelen = namelen;
789 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
790 struct lu_name *slname)
795 tlname->ln_name = slname->ln_name;
796 tlname->ln_namelen = slname->ln_namelen;
800 void mdt_enable_cos(struct mdt_device *, int);
801 int mdt_cos_is_enabled(struct mdt_device *);
802 int mdt_hsm_copytool_send(struct obd_export *exp);
820 LPROC_MDT_SAMEDIR_RENAME,
821 LPROC_MDT_CROSSDIR_RENAME,
824 void mdt_counter_incr(struct obd_export *exp, int opcode);
825 void mdt_stats_counter_init(struct lprocfs_stats *stats);
826 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
827 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
828 int mdt_procfs_fini(struct mdt_device *mdt);
829 void mdt_rename_counter_tally(struct mdt_thread_info *info,
830 struct mdt_device *mdt, struct obd_export *exp,
831 struct mdt_object *src, struct mdt_object *tgt);
833 void mdt_time_start(const struct mdt_thread_info *info);
834 void mdt_time_end(const struct mdt_thread_info *info, int idx);
837 int mdt_ck_thread_start(struct mdt_device *mdt);
838 void mdt_ck_thread_stop(struct mdt_device *mdt);
839 void mdt_ck_timer_callback(unsigned long castmeharder);
840 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
842 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
843 const struct lu_fid *fid,
844 struct lustre_capa *capa)
846 struct md_capainfo *ci;
848 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
849 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
850 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
853 ci = md_capainfo(info->mti_env);
855 ci->mc_fid[offset] = *fid;
856 ci->mc_capa[offset] = capa;
859 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
861 struct md_capainfo *ci = md_capainfo(info->mti_env);
866 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__ */