4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_internal.h
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
44 #ifndef _MDT_INTERNAL_H
45 #define _MDT_INTERNAL_H
47 #include <libcfs/libcfs.h>
48 #include <libcfs/libcfs_hash.h>
49 #include <upcall_cache.h>
50 #include <obd_class.h>
51 #include <lustre_disk.h>
52 #include <lu_target.h>
53 #include <md_object.h>
54 #include <lustre_fid.h>
55 #include <lustre_fld.h>
56 #include <lustre_req_layout.h>
57 #include <lustre_sec.h>
58 #include <lustre_idmap.h>
59 #include <lustre_eacl.h>
60 #include <lustre_quota.h>
61 #include <lustre_linkea.h>
65 /* file data for open files on MDS */
66 struct mdt_file_data {
67 /** portals handle must be first */
68 struct portals_handle mfd_open_handle;
69 /* export data of portals_handle */
70 const struct mdt_export_data *mfd_owner;
71 /** open mode provided by client */
73 /** protected by med_open_lock */
74 struct list_head mfd_list;
75 /** xid of the open request */
77 /** old handle in replay case */
78 struct lustre_handle mfd_open_handle_old;
79 /** point to opened object */
80 struct mdt_object *mfd_object;
83 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
84 #define CDT_NORETRY_ACTION (1ULL << 1)
85 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
86 #define CDT_POLICY_SHIFT_COUNT 2
87 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
90 /* when adding a new policy, do not forget to update
91 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
93 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
95 /* Coordinator states. Keep the cdt_transition table in sync. */
96 enum cdt_states { CDT_STOPPED = 0,
105 static inline char *cdt_mdt_state2str(int state)
123 /* when multiple lock are needed, the lock order is
131 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
132 bool cdt_event; /**< coordinator event */
133 struct task_struct *cdt_task; /**< cdt thread handle */
134 struct lu_env cdt_env; /**< coordinator lustre
136 struct lu_context cdt_session; /** session for lu_ucred */
137 struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
138 struct completion cdt_kobj_unregister;
139 struct kobject cdt_hsm_kobj; /* hsm sysfs object */
140 __u64 cdt_policy; /**< policy flags */
141 enum cdt_states cdt_state; /**< state */
142 struct mutex cdt_state_lock; /**< cdt_state lock */
143 __u64 cdt_last_cookie; /**< last cookie
145 struct rw_semaphore cdt_llog_lock; /**< protect llog
147 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
148 struct rw_semaphore cdt_request_lock; /**< protect request
150 struct mutex cdt_restore_lock; /**< protect restore
152 time_t cdt_loop_period; /**< llog scan period */
153 time_t cdt_grace_delay; /**< request grace
155 time_t cdt_active_req_timeout; /**< request timeout */
156 __u32 cdt_default_archive_id; /**< archive id used
159 u64 cdt_max_requests; /**< max count of started
161 /** Current count of active requests */
162 atomic_t cdt_request_count; /** total */
163 atomic_t cdt_archive_count;
164 atomic_t cdt_restore_count;
165 atomic_t cdt_remove_count;
167 /* started requests (struct cdt_agent_req:car_cookie_hash)
168 * indexed by cookie */
169 struct cfs_hash *cdt_request_cookie_hash;
170 /* started requests (struct cdt_agent_req:car_request_list) */
171 struct list_head cdt_request_list;
172 struct list_head cdt_agents; /**< list of register
174 struct list_head cdt_restore_handle_list;
176 /* Hash of cookies to locations of record locations in agent
178 struct cfs_hash *cdt_agent_record_hash;
180 /* Bitmasks indexed by the HSMA_XXX constants. */
181 __u64 cdt_user_request_mask;
182 __u64 cdt_group_request_mask;
183 __u64 cdt_other_request_mask;
185 /* Remove archive on last unlink policy */
186 bool cdt_remove_archive_on_last_unlink;
188 bool cdt_wakeup_coordinator;
191 /* mdt state flag bits */
192 #define MDT_FL_CFGLOG 0
193 #define MDT_FL_SYNCED 1
195 /* possible values for mo_dom_lock */
197 NO_DOM_LOCK_ON_OPEN = 0,
198 TRYLOCK_DOM_ON_OPEN = 1,
199 ALWAYS_DOM_LOCK_ON_OPEN = 2,
200 NUM_DOM_LOCK_ON_OPEN_MODES
203 struct mdt_statfs_cache {
204 struct obd_statfs msf_osfs;
210 struct lu_device mdt_lu_dev;
211 struct seq_server_site mdt_seq_site;
212 /* DLM name-space for meta-data locks maintained by this server */
213 struct ldlm_namespace *mdt_namespace;
214 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
215 struct ptlrpc_client *mdt_ldlm_client;
216 /* underlying device */
217 struct obd_export *mdt_child_exp;
218 struct md_device *mdt_child;
219 struct dt_device *mdt_bottom;
220 struct obd_export *mdt_bottom_exp;
221 struct local_oid_storage *mdt_los;
223 struct lu_target mdt_lut;
225 * Options bit-fields.
228 unsigned int mo_user_xattr:1,
233 mo_migrate_hsm_allowed:1;
234 unsigned int mo_dom_lock;
236 /* mdt state flags */
237 unsigned long mdt_state;
239 /* transaction callbacks */
240 struct dt_txn_callback mdt_txn_cb;
242 /* these values should be updated from lov if necessary.
243 * or should be placed somewhere else. */
248 /* preferred BRW size, decided by storage type and capability */
251 struct upcall_cache *mdt_identity_cache;
253 unsigned int mdt_capa_conf:1,
254 /* Enable remote dir on non-MDT0 */
255 mdt_enable_remote_dir:1,
256 mdt_enable_striped_dir:1,
257 mdt_enable_dir_migration:1,
258 mdt_enable_remote_rename:1,
262 /* user with gid can create remote/striped
263 * dir, and set default dir stripe */
264 gid_t mdt_enable_remote_dir_gid;
266 /* lock for osfs and md_root */
269 /* statfs optimization: we cache a bit */
270 struct mdt_statfs_cache mdt_sum_osfs;
271 struct mdt_statfs_cache mdt_osfs;
274 struct root_squash_info mdt_squash;
276 struct rename_stats mdt_rename_stats;
277 struct lu_fid mdt_md_root_fid;
279 /* connection to quota master */
280 struct obd_export *mdt_qmt_exp;
281 /* quota master device associated with this MDT */
282 struct lu_device *mdt_qmt_dev;
284 struct coordinator mdt_coordinator;
286 /* inter-MDT connection count */
287 atomic_t mdt_mds_mds_conns;
289 /* MDT device async commit count, used for debug and sanity test */
290 atomic_t mdt_async_commit_count;
292 struct mdt_object *mdt_md_root;
295 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
296 #define MDT_COS_DEFAULT (0)
298 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
301 struct lu_object_header mot_header;
302 struct lu_object mot_obj;
303 unsigned int mot_lov_created:1, /* lov object created */
304 mot_cache_attr:1; /* enable remote object
307 spinlock_t mot_write_lock;
308 /* Lock to protect object's SOM update. */
309 struct mutex mot_som_mutex;
310 /* Lock to protect create_data */
311 struct mutex mot_lov_mutex;
312 /* lock to protect read/write stages for Data-on-MDT files */
313 struct rw_semaphore mot_dom_sem;
314 /* Lock to protect lease open.
315 * Lease open acquires write lock; normal open acquires read lock */
316 struct rw_semaphore mot_open_sem;
317 atomic_t mot_lease_count;
318 atomic_t mot_open_count;
321 struct mdt_lock_handle {
322 /* Lock type, reg for cross-ref use or pdo lock. */
326 struct lustre_handle mlh_reg_lh;
327 enum ldlm_mode mlh_reg_mode;
330 struct lustre_handle mlh_pdo_lh;
331 enum ldlm_mode mlh_pdo_mode;
332 unsigned int mlh_pdo_hash;
334 /* Remote regular lock */
335 struct lustre_handle mlh_rreg_lh;
336 enum ldlm_mode mlh_rreg_mode;
340 MDT_LH_PARENT, /* parent lockh */
341 MDT_LH_CHILD, /* child lockh */
342 MDT_LH_OLD, /* old lockh for rename */
343 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
344 MDT_LH_NEW, /* new lockh for rename */
345 MDT_LH_RMT, /* used for return lh to caller */
346 MDT_LH_LOCAL, /* local lock never return to client */
355 /* Special magical errno for communicaiton between mdt_reint_open()
356 * and mdt_intent_reint() which means return the lock to the client
357 * for subsequent cross ref open. Previously we used plain -EREMOTE
358 * but other functions called in that path might return it too and
359 * confuse us. This is not returned to the client. See LU-5370. */
360 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
362 struct mdt_reint_record {
363 enum mds_reint_op rr_opcode;
364 const struct lustre_handle *rr_open_handle;
365 const struct lustre_handle *rr_lease_handle;
366 const struct lu_fid *rr_fid1;
367 const struct lu_fid *rr_fid2;
368 struct lu_name rr_name;
369 struct lu_name rr_tgt_name;
376 enum mdt_reint_flag {
377 MRF_OPEN_TRUNC = 1 << 0,
381 * Common data shared by mdt-level handlers. This is allocated per-thread to
382 * reduce stack consumption.
384 struct mdt_thread_info {
387 * The following members will be filled explicitly
388 * with specific data in mdt_thread_info_init().
390 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
391 * request handling may migrate from one server thread to another.
393 struct req_capsule *mti_pill;
395 /* although we have export in req, there are cases when it is not
396 * available, e.g. closing files upon export destroy */
397 struct obd_export *mti_exp;
399 * A couple of lock handles.
401 struct mdt_lock_handle mti_lh[MDT_LH_NR];
403 struct mdt_device *mti_mdt;
404 const struct lu_env *mti_env;
406 /* transaction number of current request */
412 * The following members will be filled expilictly
413 * with zero in mdt_thread_info_init(). These members may be used
420 struct md_attr mti_attr;
421 struct md_attr mti_attr2; /* mdt_lvb.c */
423 * Body for "habeo corpus" operations.
425 const struct mdt_body *mti_body;
427 * Host object. This is released at the end of mdt_handler().
429 struct mdt_object *mti_object;
431 * Lock request for "habeo clavis" operations.
433 const struct ldlm_request *mti_dlm_req;
435 __u32 mti_has_trans:1, /* has txn already? */
437 /* big_lmm buffer was used and must be used in reply */
442 /* opdata for mdt_reint_open(), has the same as
443 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
444 * value onto disk for recovery when mdt_trans_stop_cb() is called.
450 * The following members will be filled explicitly
451 * with zero in mdt_reint_unpack(), because they are only used
452 * by reint requests (including mdt_reint_open()).
456 * reint record. contains information for reint operations.
458 struct mdt_reint_record mti_rr;
460 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
462 * Operation specification (currently create and lookup)
464 struct md_op_spec mti_spec;
468 * The following members will _NOT_ be initialized at all.
469 * DO NOT expect them to contain any valid value.
470 * They should be initialized explicitly by the user themselves.
473 /* XXX: If something is in a union, make sure they do not conflict */
474 struct lu_fid mti_tmp_fid1;
475 struct lu_fid mti_tmp_fid2;
476 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
477 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
479 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
480 char ns_name[48];/* for mdt_init0() */
481 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
482 struct obd_statfs osfs; /* for mdt_statfs() */
484 /* for mdt_readpage() */
485 struct lu_rdpg mti_rdpg;
486 /* for mdt_sendpage() */
487 struct l_wait_info mti_wait_info;
497 struct lustre_handle mti_open_handle;
499 struct lu_buf mti_buf;
500 struct lu_buf mti_big_buf;
502 /* Ops object filename */
503 struct lu_name mti_name;
504 char mti_filename[NAME_MAX + 1];
505 /* per-thread values, can be re-used, may be vmalloc'd */
510 /* should be enough to fit lustre_mdt_attrs */
511 char mti_xattr_buf[128];
512 struct ldlm_enqueue_info mti_einfo[2];
513 /* einfo used by mdt_remote_object_lock_try() */
514 struct ldlm_enqueue_info mti_remote_einfo;
515 struct tg_reply_data *mti_reply_data;
517 /* FLR: layout change API */
518 struct md_layout_change mti_layout;
521 extern struct lu_context_key mdt_thread_key;
523 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
525 struct mdt_thread_info *mti;
527 lu_env_refill((void *)env);
528 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
533 struct cdt_req_progress {
534 struct mutex crp_lock; /**< protect tree */
535 struct interval_node *crp_root; /**< tree to track extent
537 struct interval_node **crp_node; /**< buffer for tree nodes
538 * vector of fixed size
540 int crp_cnt; /**< # of used nodes */
541 int crp_max; /**< # of allocated nodes */
544 struct cdt_agent_req {
545 struct hlist_node car_cookie_hash; /**< find req by cookie */
546 struct list_head car_request_list; /**< to chain all the req. */
547 atomic_t car_refcount; /**< reference counter */
548 __u64 car_flags; /**< request original flags */
549 struct obd_uuid car_uuid; /**< agent doing the req. */
550 __u32 car_archive_id; /**< archive id */
551 int car_canceled; /**< request was canceled */
552 time64_t car_req_start; /**< start time */
553 time64_t car_req_update; /**< last update time */
554 struct hsm_action_item *car_hai; /**< req. to the agent */
555 struct cdt_req_progress car_progress; /**< track data mvt
558 extern struct kmem_cache *mdt_hsm_car_kmem;
561 struct list_head ha_list; /**< to chain the agents */
562 struct obd_uuid ha_uuid; /**< agent uuid */
563 __u32 *ha_archive_id; /**< archive id */
564 int ha_archive_cnt; /**< number of archive entries
565 * 0 means any archive */
566 atomic_t ha_requests; /**< current request count */
567 atomic_t ha_success; /**< number of successful
569 atomic_t ha_failure; /**< number of failed actions */
572 struct cdt_restore_handle {
573 struct list_head crh_list; /**< to chain the handle */
574 struct lu_fid crh_fid; /**< fid of the object */
575 struct ldlm_extent crh_extent; /**< extent of the restore */
576 struct mdt_lock_handle crh_lh; /**< lock handle */
578 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
580 struct hsm_record_update {
582 enum agent_req_status status;
585 static inline const struct md_device_operations *
586 mdt_child_ops(struct mdt_device * m)
588 LASSERT(m->mdt_child);
589 return m->mdt_child->md_ops;
592 static inline struct md_object *mdt_object_child(struct mdt_object *o)
595 return lu2md(lu_object_next(&o->mot_obj));
598 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
600 return info->mti_pill ? info->mti_pill->rc_req : NULL;
603 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
605 LASSERT(info->mti_exp);
606 return exp_connect_flags(info->mti_exp);
609 static inline void mdt_object_get(const struct lu_env *env,
610 struct mdt_object *o)
613 lu_object_get(&o->mot_obj);
617 static inline void mdt_object_put(const struct lu_env *env,
618 struct mdt_object *o)
621 lu_object_put(env, &o->mot_obj);
625 static inline int mdt_object_exists(const struct mdt_object *o)
627 return lu_object_exists(&o->mot_obj);
630 static inline int mdt_object_remote(const struct mdt_object *o)
632 return lu_object_remote(&o->mot_obj);
635 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
637 return lu_object_fid(&o->mot_obj);
640 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
642 return mdt->mdt_lu_dev.ld_site;
645 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
647 return &mdt->mdt_seq_site;
650 static inline void mdt_export_evict(struct obd_export *exp)
652 class_fail_export(exp);
655 /* Here we use LVB_TYPE to check dne client, because it is
656 * also landed on 2.4. */
657 static inline bool mdt_is_dne_client(struct obd_export *exp)
659 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
662 static inline bool mdt_is_striped_client(struct obd_export *exp)
664 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
673 /* XXX Look into layout in MDT layer. This must be done in LOD. */
674 static inline int mdt_lmm_dom_entry(struct lov_mds_md *lmm)
676 struct lov_comp_md_v1 *comp_v1;
677 struct lov_mds_md *v1;
682 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
685 comp_v1 = (struct lov_comp_md_v1 *)lmm;
686 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
687 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
689 /* DoM entry is the first entry always */
690 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) != LOV_PATTERN_MDT &&
691 le16_to_cpu(comp_v1->lcm_mirror_count) == 0)
694 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
697 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
698 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
700 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) ==
704 for (j = 0; j < le16_to_cpu(v1->lmm_stripe_count); j++) {
705 /* if there is any object on OST */
706 if (le32_to_cpu(v1->lmm_objects[j].l_ost_idx) !=
711 return has_dom ? LMM_DOM_ONLY : LMM_NO_DOM;
714 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
716 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
718 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
719 le16_to_cpu(lcm->lcm_mirror_count) > 0;
722 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
724 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
725 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
726 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
731 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
733 struct lov_comp_md_v1 *comp_v1;
734 struct lov_mds_md *v1;
738 comp_v1 = (struct lov_comp_md_v1 *)lmm;
740 for (i = 1; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
741 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
742 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
744 if (lmm_is_overstriping(v1))
751 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
753 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
754 return mdt_lmm_comp_overstriping(lmm);
756 return lmm_is_overstriping(lmm);
759 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
761 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
762 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
765 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
766 void mdt_set_disposition(struct mdt_thread_info *info,
767 struct ldlm_reply *rep, __u64 op_flag);
768 void mdt_clear_disposition(struct mdt_thread_info *info,
769 struct ldlm_reply *rep, __u64 op_flag);
771 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
772 const struct lu_name *lname);
774 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
776 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
777 struct mdt_lock_handle *lh);
779 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
780 struct mdt_lock_handle *lhc);
782 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
783 struct mdt_lock_handle *lh, __u64 ibits);
785 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
786 struct mdt_lock_handle *lh, __u64 ibits,
789 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
790 struct mdt_lock_handle *lh, __u64 *ibits,
791 __u64 trybits, bool cos_incompat);
793 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
794 struct mdt_lock_handle *lh, int decref);
795 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
796 enum ldlm_mode mode, int decref);
798 struct mdt_object *mdt_object_new(const struct lu_env *env,
800 const struct lu_fid *);
801 struct mdt_object *mdt_object_find(const struct lu_env *,
803 const struct lu_fid *);
804 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
805 const struct lu_fid *,
806 struct mdt_lock_handle *,
808 void mdt_object_unlock_put(struct mdt_thread_info *,
810 struct mdt_lock_handle *,
813 void mdt_client_compatibility(struct mdt_thread_info *info);
815 int mdt_remote_object_lock(struct mdt_thread_info *mti,
816 struct mdt_object *o, const struct lu_fid *fid,
817 struct lustre_handle *lh,
818 enum ldlm_mode mode, __u64 ibits, bool cache);
819 int mdt_reint_striped_lock(struct mdt_thread_info *info,
820 struct mdt_object *o,
821 struct mdt_lock_handle *lh,
823 struct ldlm_enqueue_info *einfo,
825 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
826 struct mdt_object *o,
827 struct mdt_lock_handle *lh,
828 struct ldlm_enqueue_info *einfo, int decref);
830 enum mdt_name_flags {
834 int mdt_name_unpack(struct req_capsule *pill,
835 const struct req_msg_field *field,
837 enum mdt_name_flags flags);
838 int mdt_close_unpack(struct mdt_thread_info *info);
839 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
840 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
841 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
842 #ifdef CONFIG_FS_POSIX_ACL
843 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
844 struct mdt_object *o, struct lu_nodemap *nodemap);
846 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
847 const struct lu_attr *attr, const struct lu_fid *fid);
848 int mdt_pack_size2body(struct mdt_thread_info *info,
849 const struct lu_fid *fid, struct lustre_handle *lh);
850 int mdt_getxattr(struct mdt_thread_info *info);
851 int mdt_reint_setxattr(struct mdt_thread_info *info,
852 struct mdt_lock_handle *lh);
854 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
855 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
857 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
858 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
859 struct mdt_lock_handle *lhc);
861 extern void target_recovery_fini(struct obd_device *obd);
862 extern void target_recovery_init(struct lu_target *lut,
863 svc_handler_t handler);
864 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
865 struct obd_device *, struct lustre_sb_info *lsi);
866 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
868 int mdt_export_stats_init(struct obd_device *obd,
869 struct obd_export *exp,
872 int mdt_lock_new_child(struct mdt_thread_info *info,
873 struct mdt_object *o,
874 struct mdt_lock_handle *child_lockh);
875 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
876 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
877 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
878 const struct lustre_handle *open_handle,
880 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
881 struct mdt_object *pobj,
882 struct mdt_object *obj);
884 int mdt_get_info(struct tgt_session_info *tsi);
885 int mdt_attr_get_complex(struct mdt_thread_info *info,
886 struct mdt_object *o, struct md_attr *ma);
887 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
889 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
890 struct md_attr *ma, const char *name);
891 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
892 struct lu_fid *pfid);
893 int mdt_write_get(struct mdt_object *o);
894 void mdt_write_put(struct mdt_object *o);
895 int mdt_write_read(struct mdt_object *o);
896 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
897 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
898 void mdt_mfd_free(struct mdt_file_data *mfd);
899 int mdt_close(struct tgt_session_info *tsi);
900 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
902 int mdt_fix_reply(struct mdt_thread_info *info);
903 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
905 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
906 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
907 struct md_layout_change *spec);
908 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
910 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
911 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
912 const void *area, ssize_t len);
914 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
915 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
917 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
918 int mdt_check_ucred(struct mdt_thread_info *);
919 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
920 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
921 int mdt_init_ucred_reint(struct mdt_thread_info *);
922 void mdt_exit_ucred(struct mdt_thread_info *);
923 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
924 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
925 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
927 void mdt_thread_info_init(struct ptlrpc_request *req,
928 struct mdt_thread_info *mti);
929 void mdt_thread_info_fini(struct mdt_thread_info *mti);
930 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
931 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
932 struct ldlm_lock *new_lock,
933 struct mdt_lock_handle *lh, __u64 flags);
934 int mdt_intent_lock_replace(struct mdt_thread_info *info,
935 struct ldlm_lock **lockp,
936 struct mdt_lock_handle *lh,
937 __u64 flags, int result);
939 int hsm_init_ucred(struct lu_ucred *uc);
940 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
941 const struct md_hsm *mh);
943 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
944 void *data, int flag);
945 int mdt_links_read(struct mdt_thread_info *info,
946 struct mdt_object *mdt_obj,
947 struct linkea_data *ldata);
948 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
949 struct mdt_body *repbody);
950 void mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
951 struct mdt_object *child);
953 static inline struct mdt_device *mdt_dev(struct lu_device *d)
955 return container_of0(d, struct mdt_device, mdt_lu_dev);
958 static inline struct mdt_object *mdt_obj(struct lu_object *o)
960 return container_of0(o, struct mdt_object, mot_obj);
963 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
965 struct lu_object *lo;
966 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
968 lo = lu_object_locate(mo->mot_obj.lo_header,
969 mdt->mdt_bottom->dd_lu_dev.ld_type);
974 static inline bool agent_req_in_final_state(enum agent_req_status ars)
976 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
977 (ars == ARS_CANCELED));
980 /* mdt/mdt_identity.c */
981 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
983 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
985 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
987 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
989 void mdt_flush_identity(struct upcall_cache *, int);
991 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
993 /* mdt/mdt_recovery.c */
994 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
997 int mdt_hsm_state_get(struct tgt_session_info *tsi);
998 int mdt_hsm_state_set(struct tgt_session_info *tsi);
999 int mdt_hsm_action(struct tgt_session_info *tsi);
1000 int mdt_hsm_progress(struct tgt_session_info *tsi);
1001 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1002 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1003 int mdt_hsm_request(struct tgt_session_info *tsi);
1005 /* mdt/mdt_hsm_cdt_actions.c */
1006 extern const struct file_operations mdt_hsm_actions_fops;
1007 void dump_llog_agent_req_rec(const char *prefix,
1008 const struct llog_agent_req_rec *larr);
1009 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1010 llog_cb_t cb, void *data, u32 start_cat_idx,
1011 u32 start_rec_idx, int rw);
1012 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1013 __u32 archive_id, __u64 flags,
1014 struct hsm_action_item *hai);
1015 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
1016 struct hsm_record_update *updates,
1017 unsigned int updates_count);
1018 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1020 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1021 u32 *cat_idt, u32 *rec_idx);
1022 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1024 /* mdt/mdt_hsm_cdt_agent.c */
1025 extern const struct file_operations mdt_hsm_agent_fops;
1026 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1027 const struct obd_uuid *uuid,
1028 int nr_archives, __u32 *archive_num);
1029 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1030 const struct obd_uuid *uuid,
1031 __u32 archive_mask);
1032 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1033 const struct obd_uuid *uuid);
1034 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1035 int succ_rq, int fail_rq, int new_rq,
1036 const struct obd_uuid *uuid);
1037 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1038 struct obd_uuid *uuid);
1039 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1041 /* mdt/mdt_hsm_cdt_client.c */
1042 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1043 struct hsm_action_list *hal);
1044 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1045 const struct lu_fid *fid,
1046 enum hsm_copytool_action *action,
1047 enum agent_req_status *status,
1048 struct hsm_extent *extent);
1049 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1050 const struct lu_fid *fid);
1051 /* mdt/mdt_hsm_cdt_requests.c */
1052 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1053 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1054 extern const struct file_operations mdt_hsm_active_requests_fops;
1055 void dump_requests(char *prefix, struct coordinator *cdt);
1056 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1057 struct obd_uuid *uuid,
1058 struct hsm_action_item *hai);
1059 void mdt_cdt_free_request(struct cdt_agent_req *car);
1060 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1061 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1062 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
1063 void mdt_cdt_get_request(struct cdt_agent_req *car);
1064 void mdt_cdt_put_request(struct cdt_agent_req *car);
1065 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1066 const struct hsm_progress_kernel *pgs);
1067 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1068 /* mdt/mdt_coordinator.c */
1069 void mdt_hsm_dump_hal(int level, const char *prefix,
1070 struct hsm_action_list *hal);
1071 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1072 const struct lu_fid *fid,
1073 const struct hsm_extent *he);
1074 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1075 const struct lu_fid *fid);
1076 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1077 struct coordinator *cdt, const struct lu_fid *fid);
1078 /* coordinator management */
1079 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1080 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1081 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1084 * Signal the coordinator has work to do
1085 * \param cdt [IN] coordinator
1087 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1089 cdt->cdt_event = true;
1092 /* coordinator control sysfs interface */
1093 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1095 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1096 const char *buffer, size_t count);
1097 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1098 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1099 /* md_hsm helpers */
1100 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1101 const struct lu_fid *fid,
1102 struct md_hsm *hsm);
1103 /* actions/request helpers */
1104 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1105 struct hsm_action_list *hal, struct obd_uuid *uuid);
1106 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1107 u32 archive_id, u64 rq_flags,
1108 const struct md_hsm *hsm);
1109 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1110 struct hsm_progress_kernel *pgs);
1112 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1113 struct mdt_object *o, struct md_attr *ma);
1115 extern struct lu_context_key mdt_thread_key;
1117 /* debug issues helper starts here*/
1118 static inline int mdt_fail_write(const struct lu_env *env,
1119 struct dt_device *dd, int id)
1121 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1122 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1124 return dt_ro(env, dd);
1125 /* We set FAIL_ONCE because we never "un-fail" a device */
1131 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1133 return &req->rq_export->exp_mdt_data;
1136 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1138 return mdt_dev(exp->exp_obd->obd_lu_dev);
1141 static inline bool mdt_rdonly(struct obd_export *exp)
1143 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1144 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1145 mdt_exp2dev(exp)->mdt_readonly);
1148 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1149 struct mdt_lock_handle *lhc);
1150 static inline int mdt_check_resent(struct mdt_thread_info *info,
1151 mdt_reconstruct_t reconstruct,
1152 struct mdt_lock_handle *lhc)
1154 struct ptlrpc_request *req = mdt_info_req(info);
1158 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1159 OBD_ALLOC_PTR(info->mti_reply_data);
1160 if (info->mti_reply_data == NULL)
1163 if (req_can_reconstruct(req, info->mti_reply_data)) {
1164 reconstruct(info, lhc);
1167 DEBUG_REQ(D_HA, req,
1168 "no reply data found for RESENT req");
1171 OBD_FREE_PTR(info->mti_reply_data);
1172 info->mti_reply_data = NULL;
1177 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1178 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1180 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1182 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1185 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1187 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1189 return -ELDLM_NO_LOCK_DATA;
1192 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1193 static inline int mdt_fid_lock(const struct lu_env *env,
1194 struct ldlm_namespace *ns,
1195 struct lustre_handle *lh, enum ldlm_mode mode,
1196 union ldlm_policy_data *policy,
1197 const struct ldlm_res_id *res_id,
1198 __u64 flags, const __u64 *client_cookie)
1201 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1203 LASSERT(ns != NULL);
1204 LASSERT(lh != NULL);
1206 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1207 mode, &flags, mdt_blocking_ast,
1208 ldlm_completion_ast,
1209 glimpse ? mdt_dom_glimpse_ast : NULL,
1210 NULL, 0, LVB_T_NONE, client_cookie, lh);
1211 return rc == ELDLM_OK ? 0 : -EIO;
1214 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1216 ldlm_lock_decref(lh, mode);
1219 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1221 return mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL;
1224 extern mdl_mode_t mdt_mdl_lock_modes[];
1225 extern enum ldlm_mode mdt_dlm_lock_modes[];
1227 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1229 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1231 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1232 return mdt_mdl_lock_modes[mode];
1235 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1237 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1238 return mdt_dlm_lock_modes[mode];
1242 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1243 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1244 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1245 struct md_attr *ma);
1246 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1247 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1251 extern struct ldlm_valblock_ops mdt_lvbo;
1252 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1253 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1254 struct ptlrpc_request *req, bool increase_only);
1256 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1257 int mdt_cos_is_enabled(struct mdt_device *);
1275 LPROC_MDT_SAMEDIR_RENAME,
1276 LPROC_MDT_CROSSDIR_RENAME,
1283 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1284 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1285 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1286 void mdt_tunables_fini(struct mdt_device *mdt);
1288 /* lustre/mdt_mdt_lproc.c */
1289 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1291 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1292 struct mdt_device *mdt,
1293 struct ptlrpc_request *req,
1294 struct mdt_object *src, struct mdt_object *tgt);
1296 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1298 return mdt->mdt_lu_dev.ld_obd;
1301 extern const struct lu_device_operations mdt_lu_ops;
1303 static inline char *mdt_obd_name(struct mdt_device *mdt)
1305 return mdt->mdt_lu_dev.ld_obd->obd_name;
1308 int mds_mod_init(void);
1309 void mds_mod_exit(void);
1311 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1313 struct obd_export *exp = req->rq_export;
1316 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1317 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1324 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1325 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1327 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1328 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1329 struct niobuf_remote *rnb, int *nr_local,
1330 struct niobuf_local *lnb);
1332 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1333 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1334 struct niobuf_remote *rnb, int npages,
1335 struct niobuf_local *lnb, int old_rc);
1336 int mdt_punch_hdl(struct tgt_session_info *tsi);
1337 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1338 struct ldlm_lock **lockp, __u64 flags);
1339 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1340 struct ldlm_lock **lockp, __u64 flags);
1341 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1342 struct lustre_handle *lh);
1343 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1344 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1345 struct ldlm_resource *res, bool increase_only);
1346 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1347 bool increase_only);
1348 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1350 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1351 struct mdt_object *mo)
1353 return lu_object_is_dying(&mo->mot_header) &&
1354 S_ISREG(lu_object_attr(&mo->mot_obj));
1357 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1358 const struct lu_fid *fid, struct mdt_body *mb,
1360 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1361 const struct lu_fid *fid);
1362 void mdt_hp_brw(struct tgt_session_info *tsi);
1363 void mdt_hp_punch(struct tgt_session_info *tsi);
1364 int mdt_data_version_get(struct tgt_session_info *tsi);
1367 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1368 u64 want, bool conservative);
1369 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1371 #endif /* _MDT_INTERNAL_H */