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,
153 /* lock to pretect epoch and write count */
154 spinlock_t mdt_ioepoch_lock;
157 /* Transaction related stuff here */
158 spinlock_t mdt_transno_lock;
159 __u64 mdt_last_transno;
161 /* transaction callbacks */
162 struct dt_txn_callback mdt_txn_cb;
164 struct dt_object *mdt_last_rcvd;
166 /* these values should be updated from lov if necessary.
167 * or should be placed somewhere else. */
169 int mdt_max_cookiesize;
170 __u64 mdt_mount_count;
173 struct mdt_server_data mdt_msd;
174 spinlock_t mdt_client_bitmap_lock;
175 unsigned long mdt_client_bitmap[(LR_MAX_CLIENTS >> 3) / sizeof(long)];
177 struct upcall_cache *mdt_identity_cache;
178 struct upcall_cache *mdt_rmtacl_cache;
181 struct rootsquash_info *mdt_rootsquash_info;
183 /* capability keys */
184 unsigned long mdt_capa_timeout;
186 struct dt_object *mdt_ck_obj;
187 unsigned long mdt_ck_timeout;
188 unsigned long mdt_ck_expiry;
189 struct timer_list mdt_ck_timer;
190 struct ptlrpc_thread mdt_ck_thread;
191 struct lustre_capa_key mdt_capa_keys[2];
192 unsigned int mdt_capa_conf:1;
194 cfs_proc_dir_entry_t *mdt_proc_entry;
195 struct lprocfs_stats *mdt_stats;
198 /*XXX copied from mds_internal.h */
199 #define MDT_SERVICE_WATCHDOG_TIMEOUT (obd_timeout * 1000)
200 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
201 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR)
204 struct lu_object_header mot_header;
205 struct md_object mot_obj;
212 struct mdt_lock_handle {
213 /* Lock type, reg for cross-ref use or pdo lock. */
217 struct lustre_handle mlh_reg_lh;
218 ldlm_mode_t mlh_reg_mode;
221 struct lustre_handle mlh_pdo_lh;
222 ldlm_mode_t mlh_pdo_mode;
223 unsigned int mlh_pdo_hash;
227 MDT_LH_PARENT, /* parent lockh */
228 MDT_LH_CHILD, /* child lockh */
229 MDT_LH_OLD, /* old lockh for rename */
230 MDT_LH_NEW, /* new lockh for rename */
231 MDT_LH_RMT, /* used for return lh to caller */
240 struct mdt_reint_record {
241 mdt_reint_t rr_opcode;
242 const struct lustre_handle *rr_handle;
243 const struct lu_fid *rr_fid1;
244 const struct lu_fid *rr_fid2;
249 const void *rr_eadata;
252 const struct llog_cookie *rr_logcookies;
256 enum mdt_reint_flag {
257 MRF_SETATTR_LOCKED = 1 << 0,
261 * Common data shared by mdt-level handlers. This is allocated per-thread to
262 * reduce stack consumption.
264 struct mdt_thread_info {
267 * The following members will be filled expilictly
268 * with specific data in mdt_thread_info_init().
272 * for req-layout interface. This field should be first to be compatible
273 * with "struct com_thread_info" in seq and fld.
275 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 * number of buffers in reply message.
284 * sizes of reply buffers.
286 int mti_rep_buf_size[REQ_MAX_FIELD_NR];
288 * A couple of lock handles.
290 struct mdt_lock_handle mti_lh[MDT_LH_NR];
292 struct mdt_device *mti_mdt;
293 const struct lu_env *mti_env;
296 * Additional fail id that can be set by handler. Passed to
297 * target_send_reply().
301 /* transaction number of current request */
307 * The following members will be filled expilictly
308 * with zero in mdt_thread_info_init(). These members may be used
315 struct md_attr mti_attr;
317 * Body for "habeo corpus" operations.
319 const struct mdt_body *mti_body;
321 * Host object. This is released at the end of mdt_handler().
323 struct mdt_object *mti_object;
325 * Lock request for "habeo clavis" operations.
327 const struct ldlm_request *mti_dlm_req;
329 __u32 mti_has_trans:1, /* has txn already? */
333 /* opdata for mdt_reint_open(), has the same as
334 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
335 * value onto disk for recovery when mdt_trans_stop_cb() is called.
341 * The following members will be filled expilictly
342 * with zero in mdt_reint_unpack(), because they are only used
343 * by reint requests (including mdt_reint_open()).
347 * reint record. contains information for reint operations.
349 struct mdt_reint_record mti_rr;
352 * Operation specification (currently create and lookup)
354 struct md_op_spec mti_spec;
358 * The following members will _NOT_ be initialized at all.
359 * DO NOT expect them to contain any valid value.
360 * They should be initialized explicitly by the user themselves.
363 /* XXX: If something is in a union, make sure they do not conflict */
365 struct lu_fid mti_tmp_fid1;
366 struct lu_fid mti_tmp_fid2;
367 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
368 * mdt_rename_lock() */
369 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
372 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
373 char ns_name[48]; /* for mdt_init0() */
374 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
375 struct kstatfs ksfs; /* for mdt_statfs() */
377 /* for mdt_readpage() */
378 struct lu_rdpg mti_rdpg;
379 /* for mdt_sendpage() */
380 struct l_wait_info mti_wait_info;
384 /* IO epoch related stuff. */
385 struct mdt_epoch *mti_epoch;
386 __u64 mti_replayepoch;
388 /* server and client data buffers */
389 struct mdt_server_data mti_msd;
390 struct mdt_client_data mti_mcd;
392 struct txn_param mti_txn_param;
393 struct lu_buf mti_buf;
394 struct lustre_capa_key mti_capa_key;
396 /* Ops object filename */
397 struct lu_name mti_name;
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 * Info allocated per-transaction.
410 #define MDT_MAX_COMMIT_CB 4
411 struct mdt_txn_info {
413 unsigned int txi_cb_count;
414 struct mdt_commit_cb txi_cb[MDT_MAX_COMMIT_CB];
417 extern struct lu_context_key mdt_txn_key;
419 static inline void mdt_trans_add_cb(const struct thandle *th,
420 mdt_cb_t cb_func, void *cb_data)
422 struct mdt_txn_info *txi;
424 txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key);
425 LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb));
427 /* add new callback */
428 txi->txi_cb[txi->txi_cb_count].mdt_cb_func = cb_func;
429 txi->txi_cb[txi->txi_cb_count].mdt_cb_data = cb_data;
433 static inline struct md_device_operations *mdt_child_ops(struct mdt_device * m)
435 LASSERT(m->mdt_child);
436 return m->mdt_child->md_ops;
439 static inline struct md_object *mdt_object_child(struct mdt_object *o)
441 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
444 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
446 return info->mti_pill.rc_req;
449 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
451 LASSERT(info->mti_exp);
452 return info->mti_exp->exp_connect_flags;
455 static inline void mdt_object_get(const struct lu_env *env,
456 struct mdt_object *o)
459 lu_object_get(&o->mot_obj.mo_lu);
463 static inline void mdt_object_put(const struct lu_env *env,
464 struct mdt_object *o)
467 lu_object_put(env, &o->mot_obj.mo_lu);
471 static inline int mdt_object_exists(const struct mdt_object *o)
473 return lu_object_exists(&o->mot_obj.mo_lu);
476 static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o)
478 return lu_object_fid(&o->mot_obj.mo_lu);
481 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
482 void mdt_set_disposition(struct mdt_thread_info *info,
483 struct ldlm_reply *rep, int flag);
484 void mdt_clear_disposition(struct mdt_thread_info *info,
485 struct ldlm_reply *rep, int flag);
487 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
488 ldlm_mode_t lm, const char *name,
491 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
494 int mdt_lock_setup(struct mdt_thread_info *info,
495 struct mdt_object *o,
496 struct mdt_lock_handle *lh);
498 int mdt_object_lock(struct mdt_thread_info *,
500 struct mdt_lock_handle *,
503 void mdt_object_unlock(struct mdt_thread_info *,
505 struct mdt_lock_handle *,
508 struct mdt_object *mdt_object_find(const struct lu_env *,
510 const struct lu_fid *);
511 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
512 const struct lu_fid *,
513 struct mdt_lock_handle *,
515 void mdt_object_unlock_put(struct mdt_thread_info *,
517 struct mdt_lock_handle *,
520 int mdt_close_unpack(struct mdt_thread_info *info);
521 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
522 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
523 void mdt_pack_size2body(struct mdt_thread_info *info,
524 struct mdt_object *o);
525 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
526 const struct lu_attr *attr, const struct lu_fid *fid);
528 int mdt_getxattr(struct mdt_thread_info *info);
529 int mdt_setxattr(struct mdt_thread_info *info);
531 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
532 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
534 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
536 extern void target_recovery_fini(struct obd_device *obd);
537 extern void target_recovery_init(struct obd_device *obd,
538 svc_handler_t handler);
539 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
540 struct obd_device *);
541 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
543 int mdt_client_del(const struct lu_env *env,
544 struct mdt_device *mdt);
545 int mdt_client_add(const struct lu_env *env,
546 struct mdt_device *mdt,
548 int mdt_client_new(const struct lu_env *env,
549 struct mdt_device *mdt);
551 int mdt_pin(struct mdt_thread_info* info);
553 int mdt_lock_new_child(struct mdt_thread_info *info,
554 struct mdt_object *o,
555 struct mdt_lock_handle *child_lockh);
557 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
560 int mdt_reint_open(struct mdt_thread_info *info,
561 struct mdt_lock_handle *lhc);
563 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
564 const struct lustre_handle *);
565 int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o);
566 void mdt_sizeonmds_enable(struct mdt_thread_info *info, struct mdt_object *mo);
567 int mdt_sizeonmds_enabled(struct mdt_object *mo);
568 int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o);
569 int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o);
570 struct mdt_file_data *mdt_mfd_new(void);
571 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
572 void mdt_mfd_free(struct mdt_file_data *mfd);
573 int mdt_close(struct mdt_thread_info *info);
574 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
576 int mdt_done_writing(struct mdt_thread_info *info);
577 void mdt_shrink_reply(struct mdt_thread_info *info);
578 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
579 const struct md_attr *);
580 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
581 struct thandle* mdt_trans_start(const struct lu_env *env,
582 struct mdt_device *mdt, int credits);
583 void mdt_trans_stop(const struct lu_env *env,
584 struct mdt_device *mdt, struct thandle *th);
585 int mdt_record_write(const struct lu_env *env,
586 struct dt_object *dt, const struct lu_buf *buf,
587 loff_t *pos, struct thandle *th);
588 int mdt_record_read(const struct lu_env *env,
589 struct dt_object *dt, struct lu_buf *buf, loff_t *pos);
591 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
592 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
593 const void *area, ssize_t len);
595 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
597 int mdt_check_ucred(struct mdt_thread_info *);
599 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
601 int mdt_init_ucred_reint(struct mdt_thread_info *);
603 void mdt_exit_ucred(struct mdt_thread_info *);
605 int groups_from_list(struct group_info *, gid_t *);
607 void groups_sort(struct group_info *);
610 int mdt_init_idmap(struct mdt_thread_info *);
612 void mdt_cleanup_idmap(struct mdt_export_data *);
614 int mdt_handle_idmap(struct mdt_thread_info *);
616 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
617 struct ptlrpc_user_desc *);
619 void mdt_body_reverse_idmap(struct mdt_thread_info *,
622 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
623 struct mdt_remote_perm *);
625 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
627 static inline struct mdt_device *mdt_dev(struct lu_device *d)
629 // LASSERT(lu_device_is_mdt(d));
630 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
633 /* mdt/mdt_identity.c */
634 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
636 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
638 struct mdt_identity *mdt_identity_get(struct upcall_cache *, __u32);
640 void mdt_identity_put(struct upcall_cache *, struct mdt_identity *);
642 void mdt_flush_identity(struct upcall_cache *, int);
644 __u32 mdt_identity_get_setxid_perm(struct mdt_identity *, __u32, lnet_nid_t);
646 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
648 /* mdt/mdt_rmtacl.c */
649 #define MDT_RMTACL_UPCALL_PATH "/usr/sbin/l_facl"
651 extern struct upcall_cache_ops mdt_rmtacl_upcall_cache_ops;
653 int mdt_rmtacl_upcall(struct mdt_thread_info *, char *, struct lu_buf *);
655 extern struct lu_context_key mdt_thread_key;
656 /* debug issues helper starts here*/
657 static inline void mdt_fail_write(const struct lu_env *env,
658 struct dt_device *dd, int id)
660 if (OBD_FAIL_CHECK(id)) {
661 CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n",
663 dd->dd_ops->dt_ro(env, dd);
664 /* We set FAIL_ONCE because we never "un-fail" a device */
665 obd_fail_loc |= OBD_FAILED | OBD_FAIL_ONCE;
669 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
671 return &req->rq_export->exp_mdt_data;
674 #define MDT_FAIL_CHECK(id) \
676 if (unlikely(OBD_FAIL_CHECK(id))) \
677 CERROR(LUSTRE_MDT_NAME": " #id " test failed\n"); \
678 OBD_FAIL_CHECK(id); \
681 #define MDT_FAIL_CHECK_ONCE(id) \
683 if (unlikely(OBD_FAIL_CHECK(id))) { \
684 CERROR(LUSTRE_MDT_NAME": *** obd_fail_loc=%x ***\n", id); \
685 obd_fail_loc |= OBD_FAILED; \
686 if ((id) & OBD_FAIL_ONCE) \
687 obd_fail_loc |= OBD_FAIL_ONCE; \
693 #define MDT_FAIL_RETURN(id, ret) \
695 if (unlikely(MDT_FAIL_CHECK_ONCE(id))) { \
700 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info);
702 static inline int is_identity_get_disabled(struct upcall_cache *cache)
704 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
707 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
708 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
709 struct lustre_handle *lh,
711 ldlm_policy_data_t *policy,
712 const struct ldlm_res_id *res_id,
720 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
721 mode, &flags, ldlm_blocking_ast,
722 ldlm_completion_ast, NULL, NULL,
724 return rc == ELDLM_OK ? 0 : -EIO;
727 static inline void mdt_fid_unlock(struct lustre_handle *lh,
730 ldlm_lock_decref(lh, mode);
733 extern mdl_mode_t mdt_mdl_lock_modes[];
734 extern ldlm_mode_t mdt_dlm_lock_modes[];
736 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
738 LASSERT(IS_PO2(mode));
739 return mdt_mdl_lock_modes[mode];
742 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
744 LASSERT(IS_PO2(mode));
745 return mdt_dlm_lock_modes[mode];
748 static inline struct lu_name *mdt_name(const struct lu_env *env,
749 char *name, int namelen)
751 struct lu_name *lname;
752 struct mdt_thread_info *mti;
754 LASSERT(namelen > 0);
755 /* trailing '\0' in buffer */
756 LASSERT(name[namelen] == '\0');
758 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
759 lname = &mti->mti_name;
760 lname->ln_name = name;
761 lname->ln_namelen = namelen;
765 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
766 struct lu_name *slname)
771 tlname->ln_name = slname->ln_name;
772 tlname->ln_namelen = slname->ln_namelen;
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 mdt_device *dev = info->mti_mdt;
798 struct md_capainfo *ci;
800 LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX);
801 if (!dev->mdt_opts.mo_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 #endif /* __KERNEL__ */