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 <md_object.h>
64 #include <dt_object.h>
65 #include <lustre_fid.h>
66 #include <lustre_fld.h>
67 #include <lustre_req_layout.h>
68 /* LR_CLIENT_SIZE, etc. */
69 #include <lustre_disk.h>
70 #include <lustre_sec.h>
72 #include <lustre_idmap.h>
73 #include <lustre_eacl.h>
74 #include <lustre_fsfilt.h>
76 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
78 return max(lcd->lcd_last_transno, lcd->lcd_last_close_transno);
81 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
83 return max(lcd->lcd_last_xid, lcd->lcd_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 lsd_client_data *lcd = req->rq_export->exp_mdt_data.med_lcd;
90 return (req->rq_xid == lcd->lcd_last_xid ||
91 req->rq_xid == lcd->lcd_last_close_xid);
95 /* file data for open files on MDS */
96 struct mdt_file_data {
97 struct portals_handle mfd_handle; /* must be first */
98 struct list_head mfd_list; /* protected by med_open_lock */
99 __u64 mfd_xid; /* xid of the open request */
100 struct lustre_handle mfd_old_handle; /* old handle in replay case */
101 int mfd_mode; /* open mode provided by client */
102 struct mdt_object *mfd_object; /* point to opened object */
107 struct md_device mdt_md_dev;
108 struct ptlrpc_service *mdt_regular_service;
109 struct ptlrpc_service *mdt_readpage_service;
110 struct ptlrpc_service *mdt_xmds_service;
111 struct ptlrpc_service *mdt_setattr_service;
112 struct ptlrpc_service *mdt_mdsc_service;
113 struct ptlrpc_service *mdt_mdss_service;
114 struct ptlrpc_service *mdt_dtss_service;
115 struct ptlrpc_service *mdt_fld_service;
116 /* DLM name-space for meta-data locks maintained by this server */
117 struct ldlm_namespace *mdt_namespace;
118 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
119 struct ptlrpc_client *mdt_ldlm_client;
120 /* underlying device */
121 struct md_device *mdt_child;
122 struct dt_device *mdt_bottom;
124 * Options bit-fields.
127 signed int mo_user_xattr :1,
134 /* mdt state flags */
135 __u32 mdt_fl_cfglog:1,
137 /* lock to pretect epoch and write count */
138 spinlock_t mdt_ioepoch_lock;
141 /* Transaction related stuff here */
142 spinlock_t mdt_transno_lock;
143 __u64 mdt_last_transno;
145 /* transaction callbacks */
146 struct dt_txn_callback mdt_txn_cb;
148 struct dt_object *mdt_last_rcvd;
150 /* these values should be updated from lov if necessary.
151 * or should be placed somewhere else. */
153 int mdt_max_cookiesize;
154 __u64 mdt_mount_count;
157 struct lr_server_data mdt_lsd;
158 spinlock_t mdt_client_bitmap_lock;
159 unsigned long mdt_client_bitmap[(LR_MAX_CLIENTS >> 3) / sizeof(long)];
161 struct upcall_cache *mdt_identity_cache;
164 rwlock_t mdt_sptlrpc_lock;
165 struct sptlrpc_rule_set mdt_sptlrpc_rset;
167 /* capability keys */
168 unsigned long mdt_capa_timeout;
170 struct dt_object *mdt_ck_obj;
171 unsigned long mdt_ck_timeout;
172 unsigned long mdt_ck_expiry;
173 cfs_timer_t mdt_ck_timer;
174 struct ptlrpc_thread mdt_ck_thread;
175 struct lustre_capa_key mdt_capa_keys[2];
176 unsigned int mdt_capa_conf:1;
179 uid_t mdt_squash_uid;
180 gid_t mdt_squash_gid;
181 struct list_head mdt_nosquash_nids;
182 char *mdt_nosquash_str;
183 int mdt_nosquash_strlen;
184 struct rw_semaphore mdt_squash_sem;
186 cfs_proc_dir_entry_t *mdt_proc_entry;
187 struct lprocfs_stats *mdt_stats;
191 #define MDT_SERVICE_WATCHDOG_FACTOR (2000)
192 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
193 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR)
194 #define MDT_COS_DEFAULT (1)
197 struct lu_object_header mot_header;
198 struct md_object mot_obj;
205 struct mdt_lock_handle {
206 /* Lock type, reg for cross-ref use or pdo lock. */
210 struct lustre_handle mlh_reg_lh;
211 ldlm_mode_t mlh_reg_mode;
214 struct lustre_handle mlh_pdo_lh;
215 ldlm_mode_t mlh_pdo_mode;
216 unsigned int mlh_pdo_hash;
220 MDT_LH_PARENT, /* parent lockh */
221 MDT_LH_CHILD, /* child lockh */
222 MDT_LH_OLD, /* old lockh for rename */
223 MDT_LH_NEW, /* new lockh for rename */
224 MDT_LH_RMT, /* used for return lh to caller */
233 struct mdt_reint_record {
234 mdt_reint_t rr_opcode;
235 const struct lustre_handle *rr_handle;
236 const struct lu_fid *rr_fid1;
237 const struct lu_fid *rr_fid2;
242 const void *rr_eadata;
245 const struct llog_cookie *rr_logcookies;
249 enum mdt_reint_flag {
250 MRF_SETATTR_LOCKED = 1 << 0,
254 * Common data shared by mdt-level handlers. This is allocated per-thread to
255 * reduce stack consumption.
257 struct mdt_thread_info {
260 * The following members will be filled explicitly
261 * with specific data in mdt_thread_info_init().
263 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
264 * request handling may migrate from one server thread to another.
266 struct req_capsule *mti_pill;
268 /* although we have export in req, there are cases when it is not
269 * available, e.g. closing files upon export destroy */
270 struct obd_export *mti_exp;
272 * A couple of lock handles.
274 struct mdt_lock_handle mti_lh[MDT_LH_NR];
276 struct mdt_device *mti_mdt;
277 const struct lu_env *mti_env;
280 * Additional fail id that can be set by handler. Passed to
281 * target_send_reply().
285 /* transaction number of current request */
291 * The following members will be filled expilictly
292 * with zero in mdt_thread_info_init(). These members may be used
299 struct md_attr mti_attr;
301 * Body for "habeo corpus" operations.
303 const struct mdt_body *mti_body;
305 * Host object. This is released at the end of mdt_handler().
307 struct mdt_object *mti_object;
309 * Lock request for "habeo clavis" operations.
311 const struct ldlm_request *mti_dlm_req;
313 __u32 mti_has_trans:1, /* has txn already? */
317 /* opdata for mdt_reint_open(), has the same as
318 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
319 * value onto disk for recovery when mdt_trans_stop_cb() is called.
325 * The following members will be filled explicitly
326 * with zero in mdt_reint_unpack(), because they are only used
327 * by reint requests (including mdt_reint_open()).
331 * reint record. contains information for reint operations.
333 struct mdt_reint_record mti_rr;
336 * Operation specification (currently create and lookup)
338 struct md_op_spec mti_spec;
342 * The following members will _NOT_ be initialized at all.
343 * DO NOT expect them to contain any valid value.
344 * They should be initialized explicitly by the user themselves.
347 /* XXX: If something is in a union, make sure they do not conflict */
349 struct lu_fid mti_tmp_fid1;
350 struct lu_fid mti_tmp_fid2;
351 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
352 * mdt_rename_lock() */
353 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
356 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
357 char ns_name[48]; /* for mdt_init0() */
358 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
359 struct kstatfs ksfs; /* for mdt_statfs() */
361 /* for mdt_readpage() */
362 struct lu_rdpg mti_rdpg;
363 /* for mdt_sendpage() */
364 struct l_wait_info mti_wait_info;
368 /* IO epoch related stuff. */
369 struct mdt_epoch *mti_epoch;
370 __u64 mti_replayepoch;
372 /* server and client data buffers */
373 struct lr_server_data mti_lsd;
374 struct lsd_client_data mti_lcd;
376 struct txn_param mti_txn_param;
377 struct lu_buf mti_buf;
378 struct lustre_capa_key mti_capa_key;
380 /* Ops object filename */
381 struct lu_name mti_name;
382 struct md_attr mti_tmp_attr;
385 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
386 void *data, int err);
387 struct mdt_commit_cb {
388 mdt_cb_t mdt_cb_func;
393 MDT_TXN_CAPA_KEYS_WRITE_OP,
394 MDT_TXN_LAST_RCVD_WRITE_OP,
399 * Info allocated per-transaction.
401 #define MDT_MAX_COMMIT_CB 4
402 struct mdt_txn_info {
404 unsigned int txi_cb_count;
405 struct mdt_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
408 extern struct lu_context_key mdt_txn_key;
410 static inline void mdt_trans_add_cb(const struct thandle *th,
411 mdt_cb_t cb_func, void *cb_data)
413 struct mdt_txn_info *txi;
415 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
416 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
418 /* add new callback */
419 txi->txi_cb[txi->txi_cb_count].mdt_cb_func = cb_func;
420 txi->txi_cb[txi->txi_cb_count].mdt_cb_data = cb_data;
424 static inline const struct md_device_operations *
425 mdt_child_ops(struct mdt_device * m)
427 LASSERT(m->mdt_child);
428 return m->mdt_child->md_ops;
431 static inline struct md_object *mdt_object_child(struct mdt_object *o)
434 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
437 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
439 return info->mti_pill ? info->mti_pill->rc_req : NULL;
442 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
444 LASSERT(info->mti_exp);
445 return info->mti_exp->exp_connect_flags;
448 static inline void mdt_object_get(const struct lu_env *env,
449 struct mdt_object *o)
452 lu_object_get(&o->mot_obj.mo_lu);
456 static inline void mdt_object_put(const struct lu_env *env,
457 struct mdt_object *o)
460 lu_object_put(env, &o->mot_obj.mo_lu);
464 static inline int mdt_object_exists(const struct mdt_object *o)
466 return lu_object_exists(&o->mot_obj.mo_lu);
469 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
471 return lu_object_fid(&o->mot_obj.mo_lu);
474 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
476 return mdt->mdt_md_dev.md_lu_dev.ld_site;
479 static inline struct md_site *mdt_md_site(const struct mdt_device *mdt)
481 return lu_site2md(mdt_lu_site(mdt));
484 static inline void mdt_export_evict(struct obd_export *exp)
486 class_fail_export(exp);
487 class_export_put(exp);
490 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
491 void mdt_set_disposition(struct mdt_thread_info *info,
492 struct ldlm_reply *rep, int flag);
493 void mdt_clear_disposition(struct mdt_thread_info *info,
494 struct ldlm_reply *rep, int flag);
496 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
497 ldlm_mode_t lm, const char *name,
500 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
503 int mdt_lock_setup(struct mdt_thread_info *info,
504 struct mdt_object *o,
505 struct mdt_lock_handle *lh);
507 int mdt_object_lock(struct mdt_thread_info *,
509 struct mdt_lock_handle *,
512 void mdt_object_unlock(struct mdt_thread_info *,
514 struct mdt_lock_handle *,
517 struct mdt_object *mdt_object_find(const struct lu_env *,
519 const struct lu_fid *);
520 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
521 const struct lu_fid *,
522 struct mdt_lock_handle *,
524 void mdt_object_unlock_put(struct mdt_thread_info *,
526 struct mdt_lock_handle *,
529 int mdt_close_unpack(struct mdt_thread_info *info);
530 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
531 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
532 void mdt_pack_size2body(struct mdt_thread_info *info,
533 struct mdt_object *o);
534 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
535 const struct lu_attr *attr, const struct lu_fid *fid);
537 int mdt_getxattr(struct mdt_thread_info *info);
538 int mdt_reint_setxattr(struct mdt_thread_info *info,
539 struct mdt_lock_handle *lh);
541 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
542 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
544 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
545 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
546 struct mdt_lock_handle *lhc);
548 extern void target_recovery_fini(struct obd_device *obd);
549 extern void target_recovery_init(struct obd_device *obd,
550 svc_handler_t handler);
551 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
552 struct obd_device *, struct lustre_sb_info *lsi);
553 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
555 int mdt_client_del(const struct lu_env *env,
556 struct mdt_device *mdt);
557 int mdt_client_add(const struct lu_env *env,
558 struct mdt_device *mdt,
560 int mdt_client_new(const struct lu_env *env,
561 struct mdt_device *mdt);
563 int mdt_export_stats_init(struct obd_device *obd,
564 struct obd_export *exp,
567 int mdt_pin(struct mdt_thread_info* info);
569 int mdt_lock_new_child(struct mdt_thread_info *info,
570 struct mdt_object *o,
571 struct mdt_lock_handle *child_lockh);
573 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
576 int mdt_reint_open(struct mdt_thread_info *info,
577 struct mdt_lock_handle *lhc);
579 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
580 const struct lustre_handle *);
581 int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o);
582 void mdt_sizeonmds_enable(struct mdt_thread_info *info, struct mdt_object *mo);
583 int mdt_sizeonmds_enabled(struct mdt_object *mo);
584 int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o);
585 int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o);
586 struct mdt_file_data *mdt_mfd_new(void);
587 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
588 void mdt_mfd_free(struct mdt_file_data *mfd);
589 int mdt_close(struct mdt_thread_info *info);
590 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
592 int mdt_done_writing(struct mdt_thread_info *info);
593 void mdt_shrink_reply(struct mdt_thread_info *info);
594 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
595 const struct md_attr *);
596 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
598 void mdt_trans_credit_init(const struct lu_env *env,
599 struct mdt_device *mdt,
601 struct thandle* mdt_trans_start(const struct lu_env *env,
602 struct mdt_device *mdt);
603 void mdt_trans_stop(const struct lu_env *env,
604 struct mdt_device *mdt, struct thandle *th);
605 int mdt_record_write(const struct lu_env *env,
606 struct dt_object *dt, const struct lu_buf *buf,
607 loff_t *pos, struct thandle *th);
608 int mdt_record_read(const struct lu_env *env,
609 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
611 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
612 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
613 const void *area, ssize_t len);
615 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
617 int mdt_check_ucred(struct mdt_thread_info *);
618 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
619 int mdt_init_ucred_reint(struct mdt_thread_info *);
620 void mdt_exit_ucred(struct mdt_thread_info *);
623 int mdt_init_sec_level(struct mdt_thread_info *);
624 int mdt_init_idmap(struct mdt_thread_info *);
625 void mdt_cleanup_idmap(struct mdt_export_data *);
626 int mdt_handle_idmap(struct mdt_thread_info *);
627 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
628 struct ptlrpc_user_desc *);
629 void mdt_body_reverse_idmap(struct mdt_thread_info *,
631 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
632 struct mdt_remote_perm *);
633 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
635 static inline struct mdt_device *mdt_dev(struct lu_device *d)
637 // LASSERT(lu_device_is_mdt(d));
638 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
641 /* mdt/mdt_identity.c */
642 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
644 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
646 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
648 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
650 void mdt_flush_identity(struct upcall_cache *, int);
652 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
654 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
656 extern struct lu_context_key mdt_thread_key;
657 /* debug issues helper starts here*/
658 static inline void mdt_fail_write(const struct lu_env *env,
659 struct dt_device *dd, int id)
661 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
662 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
664 dd->dd_ops->dt_ro(env, dd);
665 /* We set FAIL_ONCE because we never "un-fail" a device */
669 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
671 return &req->rq_export->exp_mdt_data;
674 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
675 struct mdt_lock_handle *lhc);
676 static inline int mdt_check_resent(struct mdt_thread_info *info,
677 mdt_reconstruct_t reconstruct,
678 struct mdt_lock_handle *lhc)
680 struct ptlrpc_request *req = mdt_info_req(info);
683 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
684 if (req_xid_is_last(req)) {
685 reconstruct(info, lhc);
688 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
689 req->rq_export->exp_mdt_data.med_lcd->lcd_last_xid);
694 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
696 static inline int is_identity_get_disabled(struct upcall_cache *cache)
698 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
701 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
703 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
704 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
705 struct lustre_handle *lh,
707 ldlm_policy_data_t *policy,
708 const struct ldlm_res_id *res_id,
709 int flags, const __u64 *client_cookie)
716 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
717 mode, &flags, mdt_blocking_ast,
719 NULL, NULL, 0, NULL, client_cookie, lh);
720 return rc == ELDLM_OK ? 0 : -EIO;
723 static inline void mdt_fid_unlock(struct lustre_handle *lh,
726 ldlm_lock_decref(lh, mode);
729 extern mdl_mode_t mdt_mdl_lock_modes[];
730 extern ldlm_mode_t mdt_dlm_lock_modes[];
732 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
734 LASSERT(IS_PO2(mode));
735 return mdt_mdl_lock_modes[mode];
738 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
740 LASSERT(IS_PO2(mode));
741 return mdt_dlm_lock_modes[mode];
744 static inline struct lu_name *mdt_name(const struct lu_env *env,
745 char *name, int namelen)
747 struct lu_name *lname;
748 struct mdt_thread_info *mti;
750 LASSERT(namelen > 0);
751 /* trailing '\0' in buffer */
752 LASSERT(name[namelen] == '\0');
754 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
755 lname = &mti->mti_name;
756 lname->ln_name = name;
757 lname->ln_namelen = namelen;
761 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
762 struct lu_name *slname)
767 tlname->ln_name = slname->ln_name;
768 tlname->ln_namelen = slname->ln_namelen;
772 void mdt_enable_cos(struct mdt_device *, int);
773 int mdt_cos_is_enabled(struct mdt_device *);
776 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
777 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
778 int mdt_procfs_fini(struct mdt_device *mdt);
780 void mdt_time_start(const struct mdt_thread_info *info);
781 void mdt_time_end(const struct mdt_thread_info *info, int idx);
788 int mdt_ck_thread_start(struct mdt_device *mdt);
789 void mdt_ck_thread_stop(struct mdt_device *mdt);
790 void mdt_ck_timer_callback(unsigned long castmeharder);
791 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
793 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
794 const struct lu_fid *fid,
795 struct lustre_capa *capa)
797 struct md_capainfo *ci;
799 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
800 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
801 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
804 ci = md_capainfo(info->mti_env);
806 ci->mc_fid[offset] = fid;
807 ci->mc_capa[offset] = capa;
810 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
812 struct md_capainfo *ci = md_capainfo(info->mti_env);
817 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
820 if (!ci->mc_capa[i]) {
821 CERROR("no capa for index %d "DFID"\n",
822 i, PFID(ci->mc_fid[i]));
825 if (ci->mc_capa[i] == BYPASS_CAPA) {
826 CERROR("bypass for index %d "DFID"\n",
827 i, PFID(ci->mc_fid[i]));
830 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
834 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
836 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
838 #endif /* __KERNEL__ */