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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef __LUSTRE_DT_OBJECT_H
38 #define __LUSTRE_DT_OBJECT_H
41 * Sub-class of lu_object with methods common for "data" objects in OST stack.
43 * Data objects behave like regular files: you can read/write them, get and
44 * set their attributes. Implementation of dt interface is supposed to
45 * implement some form of garbage collection, normally reference counting
48 * Examples: osd (lustre/osd) is an implementation of dt interface.
54 * super-class definitions.
56 #include <lu_object.h>
58 #include <linux/libcfs/libcfs.h>
61 struct proc_dir_entry
;
67 struct dt_index_features
;
70 struct ldlm_enqueue_info
;
73 MNTOPT_USERXATTR
= 0x00000001,
74 MNTOPT_ACL
= 0x00000002,
77 struct dt_device_param
{
78 unsigned ddp_max_name_len
;
79 unsigned ddp_max_nlink
;
80 unsigned ddp_block_shift
;
82 unsigned ddp_max_ea_size
;
83 void *ddp_mnt
; /* XXX: old code can retrieve mnt -bzzz */
85 unsigned long long ddp_maxbytes
;
86 /* percentage of available space to reserve for grant error margin */
87 int ddp_grant_reserved
;
88 /* per-inode space consumption */
90 /* per-fragment grant overhead to be used by client for grant
96 * Per-transaction commit callback function
98 struct dt_txn_commit_cb
;
99 typedef void (*dt_cb_t
)(struct lu_env
*env
, struct thandle
*th
,
100 struct dt_txn_commit_cb
*cb
, int err
);
102 * Special per-transaction callback for cases when just commit callback
103 * is needed and per-device callback are not convenient to use
105 #define TRANS_COMMIT_CB_MAGIC 0xa0a00a0a
106 #define MAX_COMMIT_CB_STR_LEN 32
108 struct dt_txn_commit_cb
{
109 struct list_head dcb_linkage
;
112 char dcb_name
[MAX_COMMIT_CB_STR_LEN
];
116 * Operations on dt device.
118 struct dt_device_operations
{
120 * Return device-wide statistics.
122 int (*dt_statfs
)(const struct lu_env
*env
,
123 struct dt_device
*dev
, struct obd_statfs
*osfs
);
125 * Create transaction, described by \a param.
127 struct thandle
*(*dt_trans_create
)(const struct lu_env
*env
,
128 struct dt_device
*dev
);
130 * Start transaction, described by \a param.
132 int (*dt_trans_start
)(const struct lu_env
*env
,
133 struct dt_device
*dev
, struct thandle
*th
);
135 * Finish previously started transaction.
137 int (*dt_trans_stop
)(const struct lu_env
*env
,
140 * Add commit callback to the transaction.
142 int (*dt_trans_cb_add
)(struct thandle
*th
,
143 struct dt_txn_commit_cb
*dcb
);
145 * Return fid of root index object.
147 int (*dt_root_get
)(const struct lu_env
*env
,
148 struct dt_device
*dev
, struct lu_fid
*f
);
150 * Return device configuration data.
152 void (*dt_conf_get
)(const struct lu_env
*env
,
153 const struct dt_device
*dev
,
154 struct dt_device_param
*param
);
156 * handling device state, mostly for tests
158 int (*dt_sync
)(const struct lu_env
*env
, struct dt_device
*dev
);
159 int (*dt_ro
)(const struct lu_env
*env
, struct dt_device
*dev
);
161 * Start a transaction commit asynchronously
163 * \param env environment
164 * \param dev dt_device to start commit on
166 * \return 0 success, negative value if error
168 int (*dt_commit_async
)(const struct lu_env
*env
,
169 struct dt_device
*dev
);
171 * Initialize capability context.
173 int (*dt_init_capa_ctxt
)(const struct lu_env
*env
,
174 struct dt_device
*dev
,
175 int mode
, unsigned long timeout
,
176 __u32 alg
, struct lustre_capa_key
*keys
);
179 struct dt_index_features
{
180 /** required feature flags from enum dt_index_flags */
182 /** minimal required key size */
183 size_t dif_keysize_min
;
184 /** maximal required key size, 0 if no limit */
185 size_t dif_keysize_max
;
186 /** minimal required record size */
187 size_t dif_recsize_min
;
188 /** maximal required record size, 0 if no limit */
189 size_t dif_recsize_max
;
190 /** pointer size for record */
194 enum dt_index_flags
{
195 /** index supports variable sized keys */
196 DT_IND_VARKEY
= 1 << 0,
197 /** index supports variable sized records */
198 DT_IND_VARREC
= 1 << 1,
199 /** index can be modified */
200 DT_IND_UPDATE
= 1 << 2,
201 /** index supports records with non-unique (duplicate) keys */
202 DT_IND_NONUNQ
= 1 << 3,
204 * index support fixed-size keys sorted with natural numerical way
205 * and is able to return left-side value if no exact value found
207 DT_IND_RANGE
= 1 << 4,
211 * Features, required from index to support file system directories (mapping
214 extern const struct dt_index_features dt_directory_features
;
215 extern const struct dt_index_features dt_otable_features
;
216 extern const struct dt_index_features dt_lfsck_features
;
218 /* index features supported by the accounting objects */
219 extern const struct dt_index_features dt_acct_features
;
221 /* index features supported by the quota global indexes */
222 extern const struct dt_index_features dt_quota_glb_features
;
224 /* index features supported by the quota slave indexes */
225 extern const struct dt_index_features dt_quota_slv_features
;
228 * This is a general purpose dt allocation hint.
229 * It now contains the parent object.
230 * It can contain any allocation hint in the future.
232 struct dt_allocation_hint
{
233 struct dt_object
*dah_parent
;
238 * object type specifier.
241 enum dt_format_type
{
246 /** for special index */
248 /** for symbolic link */
253 * object format specifier.
255 struct dt_object_format
{
256 /** type for dt object */
257 enum dt_format_type dof_type
;
267 * special index need feature as parameter to create
271 const struct dt_index_features
*di_feat
;
276 enum dt_format_type
dt_mode_to_dft(__u32 mode
);
278 typedef __u64 dt_obj_version_t
;
281 * Per-dt-object operations.
283 struct dt_object_operations
{
284 void (*do_read_lock
)(const struct lu_env
*env
,
285 struct dt_object
*dt
, unsigned role
);
286 void (*do_write_lock
)(const struct lu_env
*env
,
287 struct dt_object
*dt
, unsigned role
);
288 void (*do_read_unlock
)(const struct lu_env
*env
,
289 struct dt_object
*dt
);
290 void (*do_write_unlock
)(const struct lu_env
*env
,
291 struct dt_object
*dt
);
292 int (*do_write_locked
)(const struct lu_env
*env
,
293 struct dt_object
*dt
);
295 * Note: following ->do_{x,}attr_{set,get}() operations are very
296 * similar to ->moo_{x,}attr_{set,get}() operations in struct
297 * md_object_operations (see md_object.h). These operations are not in
298 * lu_object_operations, because ->do_{x,}attr_set() versions take
299 * transaction handle as an argument (this transaction is started by
300 * caller). We might factor ->do_{x,}attr_get() into
301 * lu_object_operations, but that would break existing symmetry.
305 * Return standard attributes.
307 * precondition: lu_object_exists(&dt->do_lu);
309 int (*do_attr_get
)(const struct lu_env
*env
,
310 struct dt_object
*dt
, struct lu_attr
*attr
,
311 struct lustre_capa
*capa
);
313 * Set standard attributes.
315 * precondition: dt_object_exists(dt);
317 int (*do_declare_attr_set
)(const struct lu_env
*env
,
318 struct dt_object
*dt
,
319 const struct lu_attr
*attr
,
320 struct thandle
*handle
);
321 int (*do_attr_set
)(const struct lu_env
*env
,
322 struct dt_object
*dt
,
323 const struct lu_attr
*attr
,
324 struct thandle
*handle
,
325 struct lustre_capa
*capa
);
327 * Return a value of an extended attribute.
329 * precondition: dt_object_exists(dt);
331 int (*do_xattr_get
)(const struct lu_env
*env
, struct dt_object
*dt
,
332 struct lu_buf
*buf
, const char *name
,
333 struct lustre_capa
*capa
);
335 * Set value of an extended attribute.
337 * \a fl - flags from enum lu_xattr_flags
339 * precondition: dt_object_exists(dt);
341 int (*do_declare_xattr_set
)(const struct lu_env
*env
,
342 struct dt_object
*dt
,
343 const struct lu_buf
*buf
,
344 const char *name
, int fl
,
345 struct thandle
*handle
);
346 int (*do_xattr_set
)(const struct lu_env
*env
,
347 struct dt_object
*dt
, const struct lu_buf
*buf
,
348 const char *name
, int fl
, struct thandle
*handle
,
349 struct lustre_capa
*capa
);
351 * Delete existing extended attribute.
353 * precondition: dt_object_exists(dt);
355 int (*do_declare_xattr_del
)(const struct lu_env
*env
,
356 struct dt_object
*dt
,
357 const char *name
, struct thandle
*handle
);
358 int (*do_xattr_del
)(const struct lu_env
*env
,
359 struct dt_object
*dt
,
360 const char *name
, struct thandle
*handle
,
361 struct lustre_capa
*capa
);
363 * Place list of existing extended attributes into \a buf (which has
366 * precondition: dt_object_exists(dt);
368 int (*do_xattr_list
)(const struct lu_env
*env
,
369 struct dt_object
*dt
, struct lu_buf
*buf
,
370 struct lustre_capa
*capa
);
372 * Init allocation hint using parent object and child mode.
373 * (1) The \a parent might be NULL if this is a partial creation for
375 * (2) The type of child is in \a child_mode.
376 * (3) The result hint is stored in \a ah;
378 void (*do_ah_init
)(const struct lu_env
*env
,
379 struct dt_allocation_hint
*ah
,
380 struct dt_object
*parent
,
381 struct dt_object
*child
,
384 * Create new object on this device.
386 * precondition: !dt_object_exists(dt);
387 * postcondition: ergo(result == 0, dt_object_exists(dt));
389 int (*do_declare_create
)(const struct lu_env
*env
,
390 struct dt_object
*dt
,
391 struct lu_attr
*attr
,
392 struct dt_allocation_hint
*hint
,
393 struct dt_object_format
*dof
,
395 int (*do_create
)(const struct lu_env
*env
, struct dt_object
*dt
,
396 struct lu_attr
*attr
,
397 struct dt_allocation_hint
*hint
,
398 struct dt_object_format
*dof
,
402 Destroy object on this device
403 * precondition: !dt_object_exists(dt);
404 * postcondition: ergo(result == 0, dt_object_exists(dt));
406 int (*do_declare_destroy
)(const struct lu_env
*env
,
407 struct dt_object
*dt
,
409 int (*do_destroy
)(const struct lu_env
*env
, struct dt_object
*dt
,
413 * Announce that this object is going to be used as an index. This
414 * operation check that object supports indexing operations and
415 * installs appropriate dt_index_operations vector on success.
417 * Also probes for features. Operation is successful if all required
418 * features are supported.
420 int (*do_index_try
)(const struct lu_env
*env
,
421 struct dt_object
*dt
,
422 const struct dt_index_features
*feat
);
424 * Add nlink of the object
425 * precondition: dt_object_exists(dt);
427 int (*do_declare_ref_add
)(const struct lu_env
*env
,
428 struct dt_object
*dt
, struct thandle
*th
);
429 int (*do_ref_add
)(const struct lu_env
*env
,
430 struct dt_object
*dt
, struct thandle
*th
);
432 * Del nlink of the object
433 * precondition: dt_object_exists(dt);
435 int (*do_declare_ref_del
)(const struct lu_env
*env
,
436 struct dt_object
*dt
, struct thandle
*th
);
437 int (*do_ref_del
)(const struct lu_env
*env
,
438 struct dt_object
*dt
, struct thandle
*th
);
440 struct obd_capa
*(*do_capa_get
)(const struct lu_env
*env
,
441 struct dt_object
*dt
,
442 struct lustre_capa
*old
,
444 int (*do_object_sync
)(const struct lu_env
*, struct dt_object
*);
446 * Get object info of next level. Currently, only get inode from osd.
447 * This is only used by quota b=16542
448 * precondition: dt_object_exists(dt);
450 int (*do_data_get
)(const struct lu_env
*env
, struct dt_object
*dt
,
456 int (*do_object_lock
)(const struct lu_env
*env
, struct dt_object
*dt
,
457 struct lustre_handle
*lh
,
458 struct ldlm_enqueue_info
*einfo
,
463 * Per-dt-object operations on "file body".
465 struct dt_body_operations
{
467 * precondition: dt_object_exists(dt);
469 ssize_t (*dbo_read
)(const struct lu_env
*env
, struct dt_object
*dt
,
470 struct lu_buf
*buf
, loff_t
*pos
,
471 struct lustre_capa
*capa
);
473 * precondition: dt_object_exists(dt);
475 ssize_t (*dbo_declare_write
)(const struct lu_env
*env
,
476 struct dt_object
*dt
,
477 const loff_t size
, loff_t pos
,
478 struct thandle
*handle
);
479 ssize_t (*dbo_write
)(const struct lu_env
*env
, struct dt_object
*dt
,
480 const struct lu_buf
*buf
, loff_t
*pos
,
481 struct thandle
*handle
, struct lustre_capa
*capa
,
484 * methods for zero-copy IO
488 * precondition: dt_object_exists(dt);
492 * > 0 - number of local buffers prepared
494 int (*dbo_bufs_get
)(const struct lu_env
*env
, struct dt_object
*dt
,
495 loff_t pos
, ssize_t len
, struct niobuf_local
*lb
,
496 int rw
, struct lustre_capa
*capa
);
498 * precondition: dt_object_exists(dt);
500 int (*dbo_bufs_put
)(const struct lu_env
*env
, struct dt_object
*dt
,
501 struct niobuf_local
*lb
, int nr
);
503 * precondition: dt_object_exists(dt);
505 int (*dbo_write_prep
)(const struct lu_env
*env
, struct dt_object
*dt
,
506 struct niobuf_local
*lb
, int nr
);
508 * precondition: dt_object_exists(dt);
510 int (*dbo_declare_write_commit
)(const struct lu_env
*env
,
511 struct dt_object
*dt
,
512 struct niobuf_local
*,
513 int, struct thandle
*);
515 * precondition: dt_object_exists(dt);
517 int (*dbo_write_commit
)(const struct lu_env
*env
, struct dt_object
*dt
,
518 struct niobuf_local
*, int, struct thandle
*);
520 * precondition: dt_object_exists(dt);
522 int (*dbo_read_prep
)(const struct lu_env
*env
, struct dt_object
*dt
,
523 struct niobuf_local
*lnb
, int nr
);
524 int (*dbo_fiemap_get
)(const struct lu_env
*env
, struct dt_object
*dt
,
525 struct ll_user_fiemap
*fm
);
527 * Punch object's content
528 * precondition: regular object, not index
530 int (*dbo_declare_punch
)(const struct lu_env
*, struct dt_object
*,
531 __u64
, __u64
, struct thandle
*th
);
532 int (*dbo_punch
)(const struct lu_env
*env
, struct dt_object
*dt
,
533 __u64 start
, __u64 end
, struct thandle
*th
,
534 struct lustre_capa
*capa
);
538 * Incomplete type of index record.
543 * Incomplete type of index key.
548 * Incomplete type of dt iterator.
553 * Per-dt-object operations on object as index.
555 struct dt_index_operations
{
557 * precondition: dt_object_exists(dt);
559 int (*dio_lookup
)(const struct lu_env
*env
, struct dt_object
*dt
,
560 struct dt_rec
*rec
, const struct dt_key
*key
,
561 struct lustre_capa
*capa
);
563 * precondition: dt_object_exists(dt);
565 int (*dio_declare_insert
)(const struct lu_env
*env
,
566 struct dt_object
*dt
,
567 const struct dt_rec
*rec
,
568 const struct dt_key
*key
,
569 struct thandle
*handle
);
570 int (*dio_insert
)(const struct lu_env
*env
, struct dt_object
*dt
,
571 const struct dt_rec
*rec
, const struct dt_key
*key
,
572 struct thandle
*handle
, struct lustre_capa
*capa
,
575 * precondition: dt_object_exists(dt);
577 int (*dio_declare_delete
)(const struct lu_env
*env
,
578 struct dt_object
*dt
,
579 const struct dt_key
*key
,
580 struct thandle
*handle
);
581 int (*dio_delete
)(const struct lu_env
*env
, struct dt_object
*dt
,
582 const struct dt_key
*key
, struct thandle
*handle
,
583 struct lustre_capa
*capa
);
589 * Allocate and initialize new iterator.
591 * precondition: dt_object_exists(dt);
593 struct dt_it
*(*init
)(const struct lu_env
*env
,
594 struct dt_object
*dt
,
596 struct lustre_capa
*capa
);
597 void (*fini
)(const struct lu_env
*env
,
599 int (*get
)(const struct lu_env
*env
,
601 const struct dt_key
*key
);
602 void (*put
)(const struct lu_env
*env
,
604 int (*next
)(const struct lu_env
*env
,
606 struct dt_key
*(*key
)(const struct lu_env
*env
,
607 const struct dt_it
*di
);
608 int (*key_size
)(const struct lu_env
*env
,
609 const struct dt_it
*di
);
610 int (*rec
)(const struct lu_env
*env
,
611 const struct dt_it
*di
,
614 __u64 (*store
)(const struct lu_env
*env
,
615 const struct dt_it
*di
);
616 int (*load
)(const struct lu_env
*env
,
617 const struct dt_it
*di
, __u64 hash
);
618 int (*key_rec
)(const struct lu_env
*env
,
619 const struct dt_it
*di
, void* key_rec
);
623 enum dt_otable_it_valid
{
624 DOIV_ERROR_HANDLE
= 0x0001,
627 enum dt_otable_it_flags
{
628 /* Exit when fail. */
629 DOIF_FAILOUT
= 0x0001,
631 /* Reset iteration position to the device beginning. */
634 /* There is up layer component uses the iteration. */
635 DOIF_OUTUSED
= 0x0004,
638 /* otable based iteration needs to use the common DT interation APIs.
639 * To initialize the iteration, it needs call dio_it::init() firstly.
640 * Here is how the otable based iteration should prepare arguments to
641 * call dt_it_ops::init().
643 * For otable based iteration, the 32-bits 'attr' for dt_it_ops::init()
644 * is composed of two parts:
645 * low 16-bits is for valid bits, high 16-bits is for flags bits. */
646 #define DT_OTABLE_IT_FLAGS_SHIFT 16
647 #define DT_OTABLE_IT_FLAGS_MASK 0xffff0000
650 struct lu_device dd_lu_dev
;
651 const struct dt_device_operations
*dd_ops
;
654 * List of dt_txn_callback (see below). This is not protected in any
655 * way, because callbacks are supposed to be added/deleted only during
656 * single-threaded start-up shut-down procedures.
658 struct list_head dd_txn_callbacks
;
661 int dt_device_init(struct dt_device
*dev
, struct lu_device_type
*t
);
662 void dt_device_fini(struct dt_device
*dev
);
664 static inline int lu_device_is_dt(const struct lu_device
*d
)
666 return ergo(d
!= NULL
, d
->ld_type
->ldt_tags
& LU_DEVICE_DT
);
669 static inline struct dt_device
* lu2dt_dev(struct lu_device
*l
)
671 LASSERT(lu_device_is_dt(l
));
672 return container_of0(l
, struct dt_device
, dd_lu_dev
);
676 struct lu_object do_lu
;
677 const struct dt_object_operations
*do_ops
;
678 const struct dt_body_operations
*do_body_ops
;
679 const struct dt_index_operations
*do_index_ops
;
683 * In-core representation of per-device local object OID storage
685 struct local_oid_storage
{
686 /* all initialized llog systems on this node linked by this */
687 struct list_head los_list
;
689 /* how many handle's reference this los has */
690 atomic_t los_refcount
;
691 struct dt_device
*los_dev
;
692 struct dt_object
*los_obj
;
694 /* data used to generate new fids */
695 struct mutex los_id_lock
;
700 static inline struct dt_object
*lu2dt(struct lu_object
*l
)
702 LASSERT(l
== NULL
|| IS_ERR(l
) || lu_device_is_dt(l
->lo_dev
));
703 return container_of0(l
, struct dt_object
, do_lu
);
706 int dt_object_init(struct dt_object
*obj
,
707 struct lu_object_header
*h
, struct lu_device
*d
);
709 void dt_object_fini(struct dt_object
*obj
);
711 static inline int dt_object_exists(const struct dt_object
*dt
)
713 return lu_object_exists(&dt
->do_lu
);
716 static inline int dt_object_remote(const struct dt_object
*dt
)
718 return lu_object_remote(&dt
->do_lu
);
721 static inline struct dt_object
*lu2dt_obj(struct lu_object
*o
)
723 LASSERT(ergo(o
!= NULL
, lu_device_is_dt(o
->lo_dev
)));
724 return container_of0(o
, struct dt_object
, do_lu
);
728 * This is the general purpose transaction handle.
729 * 1. Transaction Life Cycle
730 * This transaction handle is allocated upon starting a new transaction,
731 * and deallocated after this transaction is committed.
732 * 2. Transaction Nesting
733 * We do _NOT_ support nested transaction. So, every thread should only
734 * have one active transaction, and a transaction only belongs to one
735 * thread. Due to this, transaction handle need no reference count.
736 * 3. Transaction & dt_object locking
737 * dt_object locks should be taken inside transaction.
738 * 4. Transaction & RPC
739 * No RPC request should be issued inside transaction.
742 /** the dt device on which the transactions are executed */
743 struct dt_device
*th_dev
;
745 /** context for this transaction, tag is LCT_TX_HANDLE */
746 struct lu_context th_ctx
;
748 /** additional tags (layers can add in declare) */
751 /** the last operation result in this transaction.
752 * this value is used in recovery */
755 /** whether we need sync commit */
756 unsigned int th_sync
:1;
758 /* local transation, no need to inform other layers */
759 unsigned int th_local
:1;
761 /* In DNE, one transaction can be disassemblied into
762 * updates on several different MDTs, and these updates
763 * will be attached to th_remote_update_list per target.
764 * Only single thread will access the list, no need lock
766 struct list_head th_remote_update_list
;
767 struct update_request
*th_current_request
;
771 * Transaction call-backs.
773 * These are invoked by osd (or underlying transaction engine) when
774 * transaction changes state.
776 * Call-backs are used by upper layers to modify transaction parameters and to
777 * perform some actions on for each transaction state transition. Typical
778 * example is mdt registering call-back to write into last-received file
779 * before each transaction commit.
781 struct dt_txn_callback
{
782 int (*dtc_txn_start
)(const struct lu_env
*env
,
783 struct thandle
*txn
, void *cookie
);
784 int (*dtc_txn_stop
)(const struct lu_env
*env
,
785 struct thandle
*txn
, void *cookie
);
786 void (*dtc_txn_commit
)(struct thandle
*txn
, void *cookie
);
789 struct list_head dtc_linkage
;
792 void dt_txn_callback_add(struct dt_device
*dev
, struct dt_txn_callback
*cb
);
793 void dt_txn_callback_del(struct dt_device
*dev
, struct dt_txn_callback
*cb
);
795 int dt_txn_hook_start(const struct lu_env
*env
,
796 struct dt_device
*dev
, struct thandle
*txn
);
797 int dt_txn_hook_stop(const struct lu_env
*env
, struct thandle
*txn
);
798 void dt_txn_hook_commit(struct thandle
*txn
);
800 int dt_try_as_dir(const struct lu_env
*env
, struct dt_object
*obj
);
803 * Callback function used for parsing path.
804 * \see llo_store_resolve
806 typedef int (*dt_entry_func_t
)(const struct lu_env
*env
,
810 #define DT_MAX_PATH 1024
812 int dt_path_parser(const struct lu_env
*env
,
813 char *local
, dt_entry_func_t entry_func
,
817 dt_store_resolve(const struct lu_env
*env
, struct dt_device
*dt
,
818 const char *path
, struct lu_fid
*fid
);
820 struct dt_object
*dt_store_open(const struct lu_env
*env
,
821 struct dt_device
*dt
,
823 const char *filename
,
826 struct dt_object
*dt_find_or_create(const struct lu_env
*env
,
827 struct dt_device
*dt
,
828 const struct lu_fid
*fid
,
829 struct dt_object_format
*dof
,
830 struct lu_attr
*attr
);
832 struct dt_object
*dt_locate_at(const struct lu_env
*env
,
833 struct dt_device
*dev
,
834 const struct lu_fid
*fid
,
835 struct lu_device
*top_dev
);
836 static inline struct dt_object
*
837 dt_locate(const struct lu_env
*env
, struct dt_device
*dev
,
838 const struct lu_fid
*fid
)
840 return dt_locate_at(env
, dev
, fid
, dev
->dd_lu_dev
.ld_site
->ls_top_dev
);
844 int local_oid_storage_init(const struct lu_env
*env
, struct dt_device
*dev
,
845 const struct lu_fid
*first_fid
,
846 struct local_oid_storage
**los
);
847 void local_oid_storage_fini(const struct lu_env
*env
,
848 struct local_oid_storage
*los
);
849 int local_object_fid_generate(const struct lu_env
*env
,
850 struct local_oid_storage
*los
,
852 int local_object_declare_create(const struct lu_env
*env
,
853 struct local_oid_storage
*los
,
855 struct lu_attr
*attr
,
856 struct dt_object_format
*dof
,
858 int local_object_create(const struct lu_env
*env
,
859 struct local_oid_storage
*los
,
861 struct lu_attr
*attr
, struct dt_object_format
*dof
,
863 struct dt_object
*local_file_find_or_create(const struct lu_env
*env
,
864 struct local_oid_storage
*los
,
865 struct dt_object
*parent
,
866 const char *name
, __u32 mode
);
867 struct dt_object
*local_file_find_or_create_with_fid(const struct lu_env
*env
,
868 struct dt_device
*dt
,
869 const struct lu_fid
*fid
,
870 struct dt_object
*parent
,
874 local_index_find_or_create(const struct lu_env
*env
,
875 struct local_oid_storage
*los
,
876 struct dt_object
*parent
,
877 const char *name
, __u32 mode
,
878 const struct dt_index_features
*ft
);
880 local_index_find_or_create_with_fid(const struct lu_env
*env
,
881 struct dt_device
*dt
,
882 const struct lu_fid
*fid
,
883 struct dt_object
*parent
,
884 const char *name
, __u32 mode
,
885 const struct dt_index_features
*ft
);
886 int local_object_unlink(const struct lu_env
*env
, struct dt_device
*dt
,
887 struct dt_object
*parent
, const char *name
);
889 static inline int dt_object_lock(const struct lu_env
*env
,
890 struct dt_object
*o
, struct lustre_handle
*lh
,
891 struct ldlm_enqueue_info
*einfo
,
896 LASSERT(o
->do_ops
->do_object_lock
);
897 return o
->do_ops
->do_object_lock(env
, o
, lh
, einfo
, policy
);
900 int dt_lookup_dir(const struct lu_env
*env
, struct dt_object
*dir
,
901 const char *name
, struct lu_fid
*fid
);
903 static inline int dt_object_sync(const struct lu_env
*env
,
908 LASSERT(o
->do_ops
->do_object_sync
);
909 return o
->do_ops
->do_object_sync(env
, o
);
912 int dt_declare_version_set(const struct lu_env
*env
, struct dt_object
*o
,
914 void dt_version_set(const struct lu_env
*env
, struct dt_object
*o
,
915 dt_obj_version_t version
, struct thandle
*th
);
916 dt_obj_version_t
dt_version_get(const struct lu_env
*env
, struct dt_object
*o
);
919 int dt_read(const struct lu_env
*env
, struct dt_object
*dt
,
920 struct lu_buf
*buf
, loff_t
*pos
);
921 int dt_record_read(const struct lu_env
*env
, struct dt_object
*dt
,
922 struct lu_buf
*buf
, loff_t
*pos
);
923 int dt_record_write(const struct lu_env
*env
, struct dt_object
*dt
,
924 const struct lu_buf
*buf
, loff_t
*pos
, struct thandle
*th
);
925 typedef int (*dt_index_page_build_t
)(const struct lu_env
*env
,
926 union lu_page
*lp
, int nob
,
927 const struct dt_it_ops
*iops
,
928 struct dt_it
*it
, __u32 attr
, void *arg
);
929 int dt_index_walk(const struct lu_env
*env
, struct dt_object
*obj
,
930 const struct lu_rdpg
*rdpg
, dt_index_page_build_t filler
,
932 int dt_index_read(const struct lu_env
*env
, struct dt_device
*dev
,
933 struct idx_info
*ii
, const struct lu_rdpg
*rdpg
);
935 static inline struct thandle
*dt_trans_create(const struct lu_env
*env
,
938 LASSERT(d
->dd_ops
->dt_trans_create
);
939 return d
->dd_ops
->dt_trans_create(env
, d
);
942 static inline int dt_trans_start(const struct lu_env
*env
,
943 struct dt_device
*d
, struct thandle
*th
)
945 LASSERT(d
->dd_ops
->dt_trans_start
);
946 return d
->dd_ops
->dt_trans_start(env
, d
, th
);
949 /* for this transaction hooks shouldn't be called */
950 static inline int dt_trans_start_local(const struct lu_env
*env
,
951 struct dt_device
*d
, struct thandle
*th
)
953 LASSERT(d
->dd_ops
->dt_trans_start
);
955 return d
->dd_ops
->dt_trans_start(env
, d
, th
);
958 static inline int dt_trans_stop(const struct lu_env
*env
,
959 struct dt_device
*d
, struct thandle
*th
)
961 LASSERT(d
->dd_ops
->dt_trans_stop
);
962 return d
->dd_ops
->dt_trans_stop(env
, th
);
965 static inline int dt_trans_cb_add(struct thandle
*th
,
966 struct dt_txn_commit_cb
*dcb
)
968 LASSERT(th
->th_dev
->dd_ops
->dt_trans_cb_add
);
969 dcb
->dcb_magic
= TRANS_COMMIT_CB_MAGIC
;
970 return th
->th_dev
->dd_ops
->dt_trans_cb_add(th
, dcb
);
975 static inline int dt_declare_record_write(const struct lu_env
*env
,
976 struct dt_object
*dt
,
977 int size
, loff_t pos
,
982 LASSERTF(dt
!= NULL
, "dt is NULL when we want to write record\n");
984 LASSERT(dt
->do_body_ops
);
985 LASSERT(dt
->do_body_ops
->dbo_declare_write
);
986 rc
= dt
->do_body_ops
->dbo_declare_write(env
, dt
, size
, pos
, th
);
990 static inline int dt_declare_create(const struct lu_env
*env
,
991 struct dt_object
*dt
,
992 struct lu_attr
*attr
,
993 struct dt_allocation_hint
*hint
,
994 struct dt_object_format
*dof
,
999 LASSERT(dt
->do_ops
->do_declare_create
);
1000 return dt
->do_ops
->do_declare_create(env
, dt
, attr
, hint
, dof
, th
);
1003 static inline int dt_create(const struct lu_env
*env
,
1004 struct dt_object
*dt
,
1005 struct lu_attr
*attr
,
1006 struct dt_allocation_hint
*hint
,
1007 struct dt_object_format
*dof
,
1011 LASSERT(dt
->do_ops
);
1012 LASSERT(dt
->do_ops
->do_create
);
1013 return dt
->do_ops
->do_create(env
, dt
, attr
, hint
, dof
, th
);
1016 static inline int dt_declare_destroy(const struct lu_env
*env
,
1017 struct dt_object
*dt
,
1021 LASSERT(dt
->do_ops
);
1022 LASSERT(dt
->do_ops
->do_declare_destroy
);
1023 return dt
->do_ops
->do_declare_destroy(env
, dt
, th
);
1026 static inline int dt_destroy(const struct lu_env
*env
,
1027 struct dt_object
*dt
,
1031 LASSERT(dt
->do_ops
);
1032 LASSERT(dt
->do_ops
->do_destroy
);
1033 return dt
->do_ops
->do_destroy(env
, dt
, th
);
1036 static inline void dt_read_lock(const struct lu_env
*env
,
1037 struct dt_object
*dt
,
1041 LASSERT(dt
->do_ops
);
1042 LASSERT(dt
->do_ops
->do_read_lock
);
1043 dt
->do_ops
->do_read_lock(env
, dt
, role
);
1046 static inline void dt_write_lock(const struct lu_env
*env
,
1047 struct dt_object
*dt
,
1051 LASSERT(dt
->do_ops
);
1052 LASSERT(dt
->do_ops
->do_write_lock
);
1053 dt
->do_ops
->do_write_lock(env
, dt
, role
);
1056 static inline void dt_read_unlock(const struct lu_env
*env
,
1057 struct dt_object
*dt
)
1060 LASSERT(dt
->do_ops
);
1061 LASSERT(dt
->do_ops
->do_read_unlock
);
1062 dt
->do_ops
->do_read_unlock(env
, dt
);
1065 static inline void dt_write_unlock(const struct lu_env
*env
,
1066 struct dt_object
*dt
)
1069 LASSERT(dt
->do_ops
);
1070 LASSERT(dt
->do_ops
->do_write_unlock
);
1071 dt
->do_ops
->do_write_unlock(env
, dt
);
1074 static inline int dt_write_locked(const struct lu_env
*env
,
1075 struct dt_object
*dt
)
1078 LASSERT(dt
->do_ops
);
1079 LASSERT(dt
->do_ops
->do_write_locked
);
1080 return dt
->do_ops
->do_write_locked(env
, dt
);
1083 static inline int dt_attr_get(const struct lu_env
*env
, struct dt_object
*dt
,
1084 struct lu_attr
*la
, void *arg
)
1087 LASSERT(dt
->do_ops
);
1088 LASSERT(dt
->do_ops
->do_attr_get
);
1089 return dt
->do_ops
->do_attr_get(env
, dt
, la
, arg
);
1092 static inline int dt_declare_attr_set(const struct lu_env
*env
,
1093 struct dt_object
*dt
,
1094 const struct lu_attr
*la
,
1098 LASSERT(dt
->do_ops
);
1099 LASSERT(dt
->do_ops
->do_declare_attr_set
);
1100 return dt
->do_ops
->do_declare_attr_set(env
, dt
, la
, th
);
1103 static inline int dt_attr_set(const struct lu_env
*env
, struct dt_object
*dt
,
1104 const struct lu_attr
*la
, struct thandle
*th
,
1105 struct lustre_capa
*capa
)
1108 LASSERT(dt
->do_ops
);
1109 LASSERT(dt
->do_ops
->do_attr_set
);
1110 return dt
->do_ops
->do_attr_set(env
, dt
, la
, th
, capa
);
1113 static inline int dt_declare_ref_add(const struct lu_env
*env
,
1114 struct dt_object
*dt
, struct thandle
*th
)
1117 LASSERT(dt
->do_ops
);
1118 LASSERT(dt
->do_ops
->do_declare_ref_add
);
1119 return dt
->do_ops
->do_declare_ref_add(env
, dt
, th
);
1122 static inline int dt_ref_add(const struct lu_env
*env
,
1123 struct dt_object
*dt
, struct thandle
*th
)
1126 LASSERT(dt
->do_ops
);
1127 LASSERT(dt
->do_ops
->do_ref_add
);
1128 return dt
->do_ops
->do_ref_add(env
, dt
, th
);
1131 static inline int dt_declare_ref_del(const struct lu_env
*env
,
1132 struct dt_object
*dt
, struct thandle
*th
)
1135 LASSERT(dt
->do_ops
);
1136 LASSERT(dt
->do_ops
->do_declare_ref_del
);
1137 return dt
->do_ops
->do_declare_ref_del(env
, dt
, th
);
1140 static inline int dt_ref_del(const struct lu_env
*env
,
1141 struct dt_object
*dt
, struct thandle
*th
)
1144 LASSERT(dt
->do_ops
);
1145 LASSERT(dt
->do_ops
->do_ref_del
);
1146 return dt
->do_ops
->do_ref_del(env
, dt
, th
);
1149 static inline struct obd_capa
*dt_capa_get(const struct lu_env
*env
,
1150 struct dt_object
*dt
,
1151 struct lustre_capa
*old
, __u64 opc
)
1154 LASSERT(dt
->do_ops
);
1155 LASSERT(dt
->do_ops
->do_ref_del
);
1156 return dt
->do_ops
->do_capa_get(env
, dt
, old
, opc
);
1159 static inline int dt_bufs_get(const struct lu_env
*env
, struct dt_object
*d
,
1160 struct niobuf_remote
*rnb
,
1161 struct niobuf_local
*lnb
, int rw
,
1162 struct lustre_capa
*capa
)
1165 LASSERT(d
->do_body_ops
);
1166 LASSERT(d
->do_body_ops
->dbo_bufs_get
);
1167 return d
->do_body_ops
->dbo_bufs_get(env
, d
, rnb
->offset
,
1168 rnb
->len
, lnb
, rw
, capa
);
1171 static inline int dt_bufs_put(const struct lu_env
*env
, struct dt_object
*d
,
1172 struct niobuf_local
*lnb
, int n
)
1175 LASSERT(d
->do_body_ops
);
1176 LASSERT(d
->do_body_ops
->dbo_bufs_put
);
1177 return d
->do_body_ops
->dbo_bufs_put(env
, d
, lnb
, n
);
1180 static inline int dt_write_prep(const struct lu_env
*env
, struct dt_object
*d
,
1181 struct niobuf_local
*lnb
, int n
)
1184 LASSERT(d
->do_body_ops
);
1185 LASSERT(d
->do_body_ops
->dbo_write_prep
);
1186 return d
->do_body_ops
->dbo_write_prep(env
, d
, lnb
, n
);
1189 static inline int dt_declare_write_commit(const struct lu_env
*env
,
1190 struct dt_object
*d
,
1191 struct niobuf_local
*lnb
,
1192 int n
, struct thandle
*th
)
1194 LASSERTF(d
!= NULL
, "dt is NULL when we want to declare write\n");
1195 LASSERT(th
!= NULL
);
1196 return d
->do_body_ops
->dbo_declare_write_commit(env
, d
, lnb
, n
, th
);
1200 static inline int dt_write_commit(const struct lu_env
*env
,
1201 struct dt_object
*d
, struct niobuf_local
*lnb
,
1202 int n
, struct thandle
*th
)
1205 LASSERT(d
->do_body_ops
);
1206 LASSERT(d
->do_body_ops
->dbo_write_commit
);
1207 return d
->do_body_ops
->dbo_write_commit(env
, d
, lnb
, n
, th
);
1210 static inline int dt_read_prep(const struct lu_env
*env
, struct dt_object
*d
,
1211 struct niobuf_local
*lnb
, int n
)
1214 LASSERT(d
->do_body_ops
);
1215 LASSERT(d
->do_body_ops
->dbo_read_prep
);
1216 return d
->do_body_ops
->dbo_read_prep(env
, d
, lnb
, n
);
1219 static inline int dt_declare_punch(const struct lu_env
*env
,
1220 struct dt_object
*dt
, __u64 start
,
1221 __u64 end
, struct thandle
*th
)
1224 LASSERT(dt
->do_body_ops
);
1225 LASSERT(dt
->do_body_ops
->dbo_declare_punch
);
1226 return dt
->do_body_ops
->dbo_declare_punch(env
, dt
, start
, end
, th
);
1229 static inline int dt_punch(const struct lu_env
*env
, struct dt_object
*dt
,
1230 __u64 start
, __u64 end
, struct thandle
*th
,
1231 struct lustre_capa
*capa
)
1234 LASSERT(dt
->do_body_ops
);
1235 LASSERT(dt
->do_body_ops
->dbo_punch
);
1236 return dt
->do_body_ops
->dbo_punch(env
, dt
, start
, end
, th
, capa
);
1239 static inline int dt_fiemap_get(const struct lu_env
*env
, struct dt_object
*d
,
1240 struct ll_user_fiemap
*fm
)
1243 if (d
->do_body_ops
== NULL
)
1245 if (d
->do_body_ops
->dbo_fiemap_get
== NULL
)
1247 return d
->do_body_ops
->dbo_fiemap_get(env
, d
, fm
);
1250 static inline int dt_statfs(const struct lu_env
*env
, struct dt_device
*dev
,
1251 struct obd_statfs
*osfs
)
1254 LASSERT(dev
->dd_ops
);
1255 LASSERT(dev
->dd_ops
->dt_statfs
);
1256 return dev
->dd_ops
->dt_statfs(env
, dev
, osfs
);
1259 static inline int dt_root_get(const struct lu_env
*env
, struct dt_device
*dev
,
1263 LASSERT(dev
->dd_ops
);
1264 LASSERT(dev
->dd_ops
->dt_root_get
);
1265 return dev
->dd_ops
->dt_root_get(env
, dev
, f
);
1268 static inline void dt_conf_get(const struct lu_env
*env
,
1269 const struct dt_device
*dev
,
1270 struct dt_device_param
*param
)
1273 LASSERT(dev
->dd_ops
);
1274 LASSERT(dev
->dd_ops
->dt_conf_get
);
1275 return dev
->dd_ops
->dt_conf_get(env
, dev
, param
);
1278 static inline int dt_sync(const struct lu_env
*env
, struct dt_device
*dev
)
1281 LASSERT(dev
->dd_ops
);
1282 LASSERT(dev
->dd_ops
->dt_sync
);
1283 return dev
->dd_ops
->dt_sync(env
, dev
);
1286 static inline int dt_ro(const struct lu_env
*env
, struct dt_device
*dev
)
1289 LASSERT(dev
->dd_ops
);
1290 LASSERT(dev
->dd_ops
->dt_ro
);
1291 return dev
->dd_ops
->dt_ro(env
, dev
);
1294 static inline int dt_declare_insert(const struct lu_env
*env
,
1295 struct dt_object
*dt
,
1296 const struct dt_rec
*rec
,
1297 const struct dt_key
*key
,
1301 LASSERT(dt
->do_index_ops
);
1302 LASSERT(dt
->do_index_ops
->dio_declare_insert
);
1303 return dt
->do_index_ops
->dio_declare_insert(env
, dt
, rec
, key
, th
);
1306 static inline int dt_insert(const struct lu_env
*env
,
1307 struct dt_object
*dt
,
1308 const struct dt_rec
*rec
,
1309 const struct dt_key
*key
,
1311 struct lustre_capa
*capa
,
1315 LASSERT(dt
->do_index_ops
);
1316 LASSERT(dt
->do_index_ops
->dio_insert
);
1317 return dt
->do_index_ops
->dio_insert(env
, dt
, rec
, key
, th
,
1321 static inline int dt_declare_xattr_del(const struct lu_env
*env
,
1322 struct dt_object
*dt
,
1327 LASSERT(dt
->do_ops
);
1328 LASSERT(dt
->do_ops
->do_declare_xattr_del
);
1329 return dt
->do_ops
->do_declare_xattr_del(env
, dt
, name
, th
);
1332 static inline int dt_xattr_del(const struct lu_env
*env
,
1333 struct dt_object
*dt
, const char *name
,
1335 struct lustre_capa
*capa
)
1338 LASSERT(dt
->do_ops
);
1339 LASSERT(dt
->do_ops
->do_xattr_del
);
1340 return dt
->do_ops
->do_xattr_del(env
, dt
, name
, th
, capa
);
1343 static inline int dt_declare_xattr_set(const struct lu_env
*env
,
1344 struct dt_object
*dt
,
1345 const struct lu_buf
*buf
,
1346 const char *name
, int fl
,
1350 LASSERT(dt
->do_ops
);
1351 LASSERT(dt
->do_ops
->do_declare_xattr_set
);
1352 return dt
->do_ops
->do_declare_xattr_set(env
, dt
, buf
, name
, fl
, th
);
1355 static inline int dt_xattr_set(const struct lu_env
*env
,
1356 struct dt_object
*dt
, const struct lu_buf
*buf
,
1357 const char *name
, int fl
, struct thandle
*th
,
1358 struct lustre_capa
*capa
)
1361 LASSERT(dt
->do_ops
);
1362 LASSERT(dt
->do_ops
->do_xattr_set
);
1363 return dt
->do_ops
->do_xattr_set(env
, dt
, buf
, name
, fl
, th
, capa
);
1366 static inline int dt_xattr_get(const struct lu_env
*env
,
1367 struct dt_object
*dt
, struct lu_buf
*buf
,
1368 const char *name
, struct lustre_capa
*capa
)
1371 LASSERT(dt
->do_ops
);
1372 LASSERT(dt
->do_ops
->do_xattr_get
);
1373 return dt
->do_ops
->do_xattr_get(env
, dt
, buf
, name
, capa
);
1376 static inline int dt_xattr_list(const struct lu_env
*env
,
1377 struct dt_object
*dt
, struct lu_buf
*buf
,
1378 struct lustre_capa
*capa
)
1381 LASSERT(dt
->do_ops
);
1382 LASSERT(dt
->do_ops
->do_xattr_list
);
1383 return dt
->do_ops
->do_xattr_list(env
, dt
, buf
, capa
);
1386 static inline int dt_declare_delete(const struct lu_env
*env
,
1387 struct dt_object
*dt
,
1388 const struct dt_key
*key
,
1392 LASSERT(dt
->do_index_ops
);
1393 LASSERT(dt
->do_index_ops
->dio_declare_delete
);
1394 return dt
->do_index_ops
->dio_declare_delete(env
, dt
, key
, th
);
1397 static inline int dt_delete(const struct lu_env
*env
,
1398 struct dt_object
*dt
,
1399 const struct dt_key
*key
,
1401 struct lustre_capa
*capa
)
1404 LASSERT(dt
->do_index_ops
);
1405 LASSERT(dt
->do_index_ops
->dio_delete
);
1406 return dt
->do_index_ops
->dio_delete(env
, dt
, key
, th
, capa
);
1409 static inline int dt_commit_async(const struct lu_env
*env
,
1410 struct dt_device
*dev
)
1413 LASSERT(dev
->dd_ops
);
1414 LASSERT(dev
->dd_ops
->dt_commit_async
);
1415 return dev
->dd_ops
->dt_commit_async(env
, dev
);
1418 static inline int dt_init_capa_ctxt(const struct lu_env
*env
,
1419 struct dt_device
*dev
,
1420 int mode
, unsigned long timeout
,
1421 __u32 alg
, struct lustre_capa_key
*keys
)
1424 LASSERT(dev
->dd_ops
);
1425 LASSERT(dev
->dd_ops
->dt_init_capa_ctxt
);
1426 return dev
->dd_ops
->dt_init_capa_ctxt(env
, dev
, mode
,
1427 timeout
, alg
, keys
);
1430 static inline int dt_lookup(const struct lu_env
*env
,
1431 struct dt_object
*dt
,
1433 const struct dt_key
*key
,
1434 struct lustre_capa
*capa
)
1439 LASSERT(dt
->do_index_ops
);
1440 LASSERT(dt
->do_index_ops
->dio_lookup
);
1442 ret
= dt
->do_index_ops
->dio_lookup(env
, dt
, rec
, key
, capa
);
1450 #define LU221_BAD_TIME (0x80000000U + 24 * 3600)
1452 struct dt_find_hint
{
1453 struct lu_fid
*dfh_fid
;
1454 struct dt_device
*dfh_dt
;
1455 struct dt_object
*dfh_o
;
1458 struct dt_thread_info
{
1459 char dti_buf
[DT_MAX_PATH
];
1460 struct dt_find_hint dti_dfh
;
1461 struct lu_attr dti_attr
;
1462 struct lu_fid dti_fid
;
1463 struct dt_object_format dti_dof
;
1464 struct lustre_mdt_attrs dti_lma
;
1465 struct lu_buf dti_lb
;
1469 extern struct lu_context_key dt_key
;
1471 static inline struct dt_thread_info
*dt_info(const struct lu_env
*env
)
1473 struct dt_thread_info
*dti
;
1475 dti
= lu_context_key_get(&env
->le_ctx
, &dt_key
);
1480 int dt_global_init(void);
1481 void dt_global_fini(void);
1484 int lprocfs_dt_rd_blksize(char *page
, char **start
, off_t off
,
1485 int count
, int *eof
, void *data
);
1486 int lprocfs_dt_rd_kbytestotal(char *page
, char **start
, off_t off
,
1487 int count
, int *eof
, void *data
);
1488 int lprocfs_dt_rd_kbytesfree(char *page
, char **start
, off_t off
,
1489 int count
, int *eof
, void *data
);
1490 int lprocfs_dt_rd_kbytesavail(char *page
, char **start
, off_t off
,
1491 int count
, int *eof
, void *data
);
1492 int lprocfs_dt_rd_filestotal(char *page
, char **start
, off_t off
,
1493 int count
, int *eof
, void *data
);
1494 int lprocfs_dt_rd_filesfree(char *page
, char **start
, off_t off
,
1495 int count
, int *eof
, void *data
);
1496 # endif /* LPROCFS */
1498 #endif /* __LUSTRE_DT_OBJECT_H */