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>
60 /* Data stored per client in the last_rcvd file. In le32 order. */
61 struct mdt_client_data {
62 __u8 mcd_uuid[40]; /* client UUID */
63 __u64 mcd_last_transno; /* last completed transaction ID */
64 __u64 mcd_last_xid; /* xid for the last transaction */
65 __u32 mcd_last_result; /* result from last RPC */
66 __u32 mcd_last_data; /* per-op data (disposition for open &c.) */
67 /* for MDS_CLOSE and MDS_DONE_WRITTING requests */
68 __u64 mcd_last_close_transno; /* last completed transaction ID */
69 __u64 mcd_last_close_xid; /* xid for the last transaction */
70 __u32 mcd_last_close_result; /* result from last RPC */
71 __u8 mcd_padding[LR_CLIENT_SIZE - 84];
74 static inline __u64 mcd_last_transno(struct mdt_client_data *mcd)
76 return max(mcd->mcd_last_transno, mcd->mcd_last_close_transno);
79 static inline __u64 mcd_last_xid(struct mdt_client_data *mcd)
81 return max(mcd->mcd_last_xid, mcd->mcd_last_close_xid);
84 /* check if request's xid is equal to last one or not*/
85 static inline int req_xid_is_last(struct ptlrpc_request *req)
87 struct mdt_client_data *mcd = req->rq_export->exp_mdt_data.med_mcd;
88 return (req->rq_xid == mcd->mcd_last_xid ||
89 req->rq_xid == mcd->mcd_last_close_xid);
92 /* copied from lr_server_data.
93 * mds data stored at the head of last_rcvd file. In le32 order. */
94 struct mdt_server_data {
95 __u8 msd_uuid[40]; /* server UUID */
96 __u64 msd_last_transno; /* last completed transaction ID */
97 __u64 msd_mount_count; /* incarnation number */
98 __u32 msd_feature_compat; /* compatible feature flags */
99 __u32 msd_feature_rocompat;/* read-only compatible feature flags */
100 __u32 msd_feature_incompat;/* incompatible feature flags */
101 __u32 msd_server_size; /* size of server data area */
102 __u32 msd_client_start; /* start of per-client data area */
103 __u16 msd_client_size; /* size of per-client data area */
104 //__u16 msd_subdir_count; /* number of subdirectories for objects */
105 //__u64 msd_catalog_oid; /* recovery catalog object id */
106 //__u32 msd_catalog_ogen; /* recovery catalog inode generation */
107 //__u8 msd_peeruuid[40]; /* UUID of MDS associated with this OST */
108 //__u32 msd_ost_index; /* index number of OST in LOV */
109 //__u32 msd_mdt_index; /* index number of MDT in LMV */
110 __u8 msd_padding[LR_SERVER_SIZE - 78];
114 /* file data for open files on MDS */
115 struct mdt_file_data {
116 struct portals_handle mfd_handle; /* must be first */
117 struct list_head mfd_list; /* protected by med_open_lock */
118 __u64 mfd_xid; /* xid of the open request */
119 struct lustre_handle mfd_old_handle; /* old handle in replay case */
120 int mfd_mode; /* open mode provided by client */
121 struct mdt_object *mfd_object; /* point to opened object */
126 struct md_device mdt_md_dev;
127 struct ptlrpc_service *mdt_regular_service;
128 struct ptlrpc_service *mdt_readpage_service;
129 struct ptlrpc_service *mdt_xmds_service;
130 struct ptlrpc_service *mdt_setattr_service;
131 struct ptlrpc_service *mdt_mdsc_service;
132 struct ptlrpc_service *mdt_mdss_service;
133 struct ptlrpc_service *mdt_dtss_service;
134 struct ptlrpc_service *mdt_fld_service;
135 /* DLM name-space for meta-data locks maintained by this server */
136 struct ldlm_namespace *mdt_namespace;
137 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
138 struct ptlrpc_client *mdt_ldlm_client;
139 /* underlying device */
140 struct md_device *mdt_child;
141 struct dt_device *mdt_bottom;
143 * Options bit-fields.
146 signed int mo_user_xattr :1,
152 /* mdt state flags */
153 __u32 mdt_fl_cfglog:1,
155 /* lock to pretect epoch and write count */
156 spinlock_t mdt_ioepoch_lock;
159 /* Transaction related stuff here */
160 spinlock_t mdt_transno_lock;
161 __u64 mdt_last_transno;
163 /* transaction callbacks */
164 struct dt_txn_callback mdt_txn_cb;
166 struct dt_object *mdt_last_rcvd;
168 /* these values should be updated from lov if necessary.
169 * or should be placed somewhere else. */
171 int mdt_max_cookiesize;
172 __u64 mdt_mount_count;
175 struct mdt_server_data mdt_msd;
176 spinlock_t mdt_client_bitmap_lock;
177 unsigned long mdt_client_bitmap[(LR_MAX_CLIENTS >> 3) / sizeof(long)];
179 struct upcall_cache *mdt_identity_cache;
180 struct upcall_cache *mdt_rmtacl_cache;
183 struct rootsquash_info *mdt_rootsquash_info;
185 /* capability keys */
186 unsigned long mdt_capa_timeout;
188 struct dt_object *mdt_ck_obj;
189 unsigned long mdt_ck_timeout;
190 unsigned long mdt_ck_expiry;
191 struct timer_list mdt_ck_timer;
192 struct ptlrpc_thread mdt_ck_thread;
193 struct lustre_capa_key mdt_capa_keys[2];
194 unsigned int mdt_capa_conf:1;
196 cfs_proc_dir_entry_t *mdt_proc_entry;
197 struct lprocfs_stats *mdt_stats;
200 /*XXX copied from mds_internal.h */
201 #define MDT_SERVICE_WATCHDOG_TIMEOUT (obd_timeout * 1000)
202 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
203 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR)
206 struct lu_object_header mot_header;
207 struct md_object mot_obj;
214 struct mdt_lock_handle {
215 /* Lock type, reg for cross-ref use or pdo lock. */
219 struct lustre_handle mlh_reg_lh;
220 ldlm_mode_t mlh_reg_mode;
223 struct lustre_handle mlh_pdo_lh;
224 ldlm_mode_t mlh_pdo_mode;
225 unsigned int mlh_pdo_hash;
229 MDT_LH_PARENT, /* parent lockh */
230 MDT_LH_CHILD, /* child lockh */
231 MDT_LH_OLD, /* old lockh for rename */
232 MDT_LH_NEW, /* new lockh for rename */
233 MDT_LH_RMT, /* used for return lh to caller */
242 struct mdt_reint_record {
243 mdt_reint_t rr_opcode;
244 const struct lustre_handle *rr_handle;
245 const struct lu_fid *rr_fid1;
246 const struct lu_fid *rr_fid2;
251 const void *rr_eadata;
254 const struct llog_cookie *rr_logcookies;
258 enum mdt_reint_flag {
259 MRF_SETATTR_LOCKED = 1 << 0,
263 * Common data shared by mdt-level handlers. This is allocated per-thread to
264 * reduce stack consumption.
266 struct mdt_thread_info {
269 * The following members will be filled expilictly
270 * with specific data in mdt_thread_info_init().
274 * for req-layout interface. This field should be first to be compatible
275 * with "struct com_thread_info" in seq and fld.
277 struct req_capsule mti_pill;
278 /* although we have export in req, there are cases when it is not
279 * available, e.g. closing files upon export destroy */
280 struct obd_export *mti_exp;
282 * number of buffers in reply message.
286 * sizes of reply buffers.
288 int mti_rep_buf_size[REQ_MAX_FIELD_NR];
290 * A couple of lock handles.
292 struct mdt_lock_handle mti_lh[MDT_LH_NR];
294 struct mdt_device *mti_mdt;
295 const struct lu_env *mti_env;
298 * Additional fail id that can be set by handler. Passed to
299 * target_send_reply().
303 /* transaction number of current request */
309 * The following members will be filled expilictly
310 * with zero in mdt_thread_info_init(). These members may be used
317 struct md_attr mti_attr;
319 * Body for "habeo corpus" operations.
321 const struct mdt_body *mti_body;
323 * Host object. This is released at the end of mdt_handler().
325 struct mdt_object *mti_object;
327 * Lock request for "habeo clavis" operations.
329 const struct ldlm_request *mti_dlm_req;
331 __u32 mti_has_trans:1, /* has txn already? */
335 /* opdata for mdt_reint_open(), has the same as
336 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
337 * value onto disk for recovery when mdt_trans_stop_cb() is called.
343 * The following members will be filled expilictly
344 * with zero in mdt_reint_unpack(), because they are only used
345 * by reint requests (including mdt_reint_open()).
349 * reint record. contains information for reint operations.
351 struct mdt_reint_record mti_rr;
354 * Operation specification (currently create and lookup)
356 struct md_op_spec mti_spec;
360 * The following members will _NOT_ be initialized at all.
361 * DO NOT expect them to contain any valid value.
362 * They should be initialized explicitly by the user themselves.
365 /* XXX: If something is in a union, make sure they do not conflict */
367 struct lu_fid mti_tmp_fid1;
368 struct lu_fid mti_tmp_fid2;
369 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
370 * mdt_rename_lock() */
371 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
374 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
375 char ns_name[48]; /* for mdt_init0() */
376 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
377 struct kstatfs ksfs; /* for mdt_statfs() */
379 /* for mdt_readpage() */
380 struct lu_rdpg mti_rdpg;
381 /* for mdt_sendpage() */
382 struct l_wait_info mti_wait_info;
386 /* IO epoch related stuff. */
387 struct mdt_epoch *mti_epoch;
388 __u64 mti_replayepoch;
390 /* server and client data buffers */
391 struct mdt_server_data mti_msd;
392 struct mdt_client_data mti_mcd;
394 struct txn_param mti_txn_param;
395 struct lu_buf mti_buf;
396 struct lustre_capa_key mti_capa_key;
398 /* Ops object filename */
399 struct lu_name mti_name;
402 typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno,
403 void *data, int err);
404 struct mdt_commit_cb {
405 mdt_cb_t mdt_cb_func;
410 * Info allocated per-transaction.
412 #define MDT_MAX_COMMIT_CB 4
413 struct mdt_txn_info {
415 unsigned int txi_cb_count;
416 struct mdt_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
419 extern struct lu_context_key mdt_txn_key;
421 static inline void mdt_trans_add_cb(const struct thandle *th,
422 mdt_cb_t cb_func, void *cb_data)
424 struct mdt_txn_info *txi;
426 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
427 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
429 /* add new callback */
430 txi->txi_cb[txi->txi_cb_count].mdt_cb_func = cb_func;
431 txi->txi_cb[txi->txi_cb_count].mdt_cb_data = cb_data;
435 static inline struct md_device_operations *mdt_child_ops(struct mdt_device * m)
437 LASSERT(m->mdt_child);
438 return m->mdt_child->md_ops;
441 static inline struct md_object *mdt_object_child(struct mdt_object *o)
443 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
446 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
448 return info->mti_pill.rc_req;
451 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
453 LASSERT(info->mti_exp);
454 return info->mti_exp->exp_connect_flags;
457 static inline void mdt_object_get(const struct lu_env *env,
458 struct mdt_object *o)
461 lu_object_get(&o->mot_obj.mo_lu);
465 static inline void mdt_object_put(const struct lu_env *env,
466 struct mdt_object *o)
469 lu_object_put(env, &o->mot_obj.mo_lu);
473 static inline int mdt_object_exists(const struct mdt_object *o)
475 return lu_object_exists(&o->mot_obj.mo_lu);
478 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
480 return lu_object_fid(&o->mot_obj.mo_lu);
483 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
484 void mdt_set_disposition(struct mdt_thread_info *info,
485 struct ldlm_reply *rep, int flag);
486 void mdt_clear_disposition(struct mdt_thread_info *info,
487 struct ldlm_reply *rep, int flag);
489 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
490 ldlm_mode_t lm, const char *name,
493 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
496 int mdt_lock_setup(struct mdt_thread_info *info,
497 struct mdt_object *o,
498 struct mdt_lock_handle *lh);
500 int mdt_object_lock(struct mdt_thread_info *,
502 struct mdt_lock_handle *,
505 void mdt_object_unlock(struct mdt_thread_info *,
507 struct mdt_lock_handle *,
510 struct mdt_object *mdt_object_find(const struct lu_env *,
512 const struct lu_fid *);
513 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
514 const struct lu_fid *,
515 struct mdt_lock_handle *,
517 void mdt_object_unlock_put(struct mdt_thread_info *,
519 struct mdt_lock_handle *,
522 int mdt_close_unpack(struct mdt_thread_info *info);
523 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
524 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
525 void mdt_pack_size2body(struct mdt_thread_info *info,
526 struct mdt_object *o);
527 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
528 const struct lu_attr *attr, const struct lu_fid *fid);
530 int mdt_getxattr(struct mdt_thread_info *info);
531 int mdt_setxattr(struct mdt_thread_info *info);
533 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
534 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
536 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
537 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
538 struct mdt_lock_handle *lhc);
540 extern void target_recovery_fini(struct obd_device *obd);
541 extern void target_recovery_init(struct obd_device *obd,
542 svc_handler_t handler);
543 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
544 struct obd_device *);
545 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
547 int mdt_client_del(const struct lu_env *env,
548 struct mdt_device *mdt);
549 int mdt_client_add(const struct lu_env *env,
550 struct mdt_device *mdt,
552 int mdt_client_new(const struct lu_env *env,
553 struct mdt_device *mdt);
555 int mdt_pin(struct mdt_thread_info* info);
557 int mdt_lock_new_child(struct mdt_thread_info *info,
558 struct mdt_object *o,
559 struct mdt_lock_handle *child_lockh);
561 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
564 int mdt_reint_open(struct mdt_thread_info *info,
565 struct mdt_lock_handle *lhc);
567 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
568 const struct lustre_handle *);
569 int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o);
570 void mdt_sizeonmds_enable(struct mdt_thread_info *info, struct mdt_object *mo);
571 int mdt_sizeonmds_enabled(struct mdt_object *mo);
572 int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o);
573 int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o);
574 struct mdt_file_data *mdt_mfd_new(void);
575 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
576 void mdt_mfd_free(struct mdt_file_data *mfd);
577 int mdt_close(struct mdt_thread_info *info);
578 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
580 int mdt_done_writing(struct mdt_thread_info *info);
581 void mdt_shrink_reply(struct mdt_thread_info *info);
582 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
583 const struct md_attr *);
584 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
585 struct thandle* mdt_trans_start(const struct lu_env *env,
586 struct mdt_device *mdt, int credits);
587 void mdt_trans_stop(const struct lu_env *env,
588 struct mdt_device *mdt, struct thandle *th);
589 int mdt_record_write(const struct lu_env *env,
590 struct dt_object *dt, const struct lu_buf *buf,
591 loff_t *pos, struct thandle *th);
592 int mdt_record_read(const struct lu_env *env,
593 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
595 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
596 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
597 const void *area, ssize_t len);
599 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
601 int mdt_check_ucred(struct mdt_thread_info *);
603 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
605 int mdt_init_ucred_reint(struct mdt_thread_info *);
607 void mdt_exit_ucred(struct mdt_thread_info *);
609 int groups_from_list(struct group_info *, gid_t *);
611 void groups_sort(struct group_info *);
614 int mdt_init_idmap(struct mdt_thread_info *);
616 void mdt_cleanup_idmap(struct mdt_export_data *);
618 int mdt_handle_idmap(struct mdt_thread_info *);
620 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
621 struct ptlrpc_user_desc *);
623 void mdt_body_reverse_idmap(struct mdt_thread_info *,
626 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
627 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 mdt_identity *mdt_identity_get(struct upcall_cache *, __u32);
644 void mdt_identity_put(struct upcall_cache *, struct mdt_identity *);
646 void mdt_flush_identity(struct upcall_cache *, int);
648 __u32 mdt_identity_get_setxid_perm(struct mdt_identity *, __u32, lnet_nid_t);
650 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
652 /* mdt/mdt_rmtacl.c */
653 #define MDT_RMTACL_UPCALL_PATH "/usr/sbin/l_facl"
655 extern struct upcall_cache_ops mdt_rmtacl_upcall_cache_ops;
657 int mdt_rmtacl_upcall(struct mdt_thread_info *, char *, struct lu_buf *);
659 extern struct lu_context_key mdt_thread_key;
660 /* debug issues helper starts here*/
661 static inline void mdt_fail_write(const struct lu_env *env,
662 struct dt_device *dd, int id)
664 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
665 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
667 dd->dd_ops->dt_ro(env, dd);
668 /* We set FAIL_ONCE because we never "un-fail" a device */
672 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
674 return &req->rq_export->exp_mdt_data;
677 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
678 struct mdt_lock_handle *lhc);
679 static inline int mdt_check_resent(struct mdt_thread_info *info,
680 mdt_reconstruct_t reconstruct,
681 struct mdt_lock_handle *lhc)
683 struct ptlrpc_request *req = mdt_info_req(info);
686 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
687 if (req_xid_is_last(req)) {
688 reconstruct(info, lhc);
691 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
692 req->rq_export->exp_mdt_data.med_mcd->mcd_last_xid);
697 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
699 static inline int is_identity_get_disabled(struct upcall_cache *cache)
701 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
704 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
705 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
706 struct lustre_handle *lh,
708 ldlm_policy_data_t *policy,
709 const struct ldlm_res_id *res_id,
717 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
718 mode, &flags, ldlm_blocking_ast,
719 ldlm_completion_ast, NULL, NULL,
721 return rc == ELDLM_OK ? 0 : -EIO;
724 static inline void mdt_fid_unlock(struct lustre_handle *lh,
727 ldlm_lock_decref(lh, mode);
730 extern mdl_mode_t mdt_mdl_lock_modes[];
731 extern ldlm_mode_t mdt_dlm_lock_modes[];
733 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
735 LASSERT(IS_PO2(mode));
736 return mdt_mdl_lock_modes[mode];
739 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
741 LASSERT(IS_PO2(mode));
742 return mdt_dlm_lock_modes[mode];
745 static inline struct lu_name *mdt_name(const struct lu_env *env,
746 char *name, int namelen)
748 struct lu_name *lname;
749 struct mdt_thread_info *mti;
751 LASSERT(namelen > 0);
752 /* trailing '\0' in buffer */
753 LASSERT(name[namelen] == '\0');
755 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
756 lname = &mti->mti_name;
757 lname->ln_name = name;
758 lname->ln_namelen = namelen;
762 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
763 struct lu_name *slname)
768 tlname->ln_name = slname->ln_name;
769 tlname->ln_namelen = slname->ln_namelen;
774 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
775 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
776 int mdt_procfs_fini(struct mdt_device *mdt);
778 void mdt_time_start(const struct mdt_thread_info *info);
779 void mdt_time_end(const struct mdt_thread_info *info, int idx);
786 int mdt_ck_thread_start(struct mdt_device *mdt);
787 void mdt_ck_thread_stop(struct mdt_device *mdt);
788 void mdt_ck_timer_callback(unsigned long castmeharder);
789 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
791 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
792 const struct lu_fid *fid,
793 struct lustre_capa *capa)
795 struct mdt_device *dev = info->mti_mdt;
796 struct md_capainfo *ci;
798 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
799 if (!dev->mdt_opts.mo_mds_capa)
802 ci = md_capainfo(info->mti_env);
804 ci->mc_fid[offset] = fid;
805 ci->mc_capa[offset] = capa;
808 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
810 struct md_capainfo *ci = md_capainfo(info->mti_env);
815 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
818 if (!ci->mc_capa[i]) {
819 CERROR("no capa for index %d "DFID"\n",
820 i, PFID(ci->mc_fid[i]));
823 if (ci->mc_capa[i] == BYPASS_CAPA) {
824 CERROR("bypass for index %d "DFID"\n",
825 i, PFID(ci->mc_fid[i]));
828 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
832 #endif /* __KERNEL__ */