lustre/include/lustre_update.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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.htm
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2013, 2014, Intel Corporation.
  24  */
  25 /*
  26  * lustre/include/lustre_update.h
  27  *
  28  * Author: Di Wang <di.wang@intel.com>
  29  */
  30
  31 #ifndef _LUSTRE_UPDATE_H
  32 #define _LUSTRE_UPDATE_H
  33 #include <lustre_net.h>
  34 #include <dt_object.h>
  35
  36 #define OUT_UPDATE_INIT_BUFFER_SIZE     4096
  37 #define OUT_UPDATE_REPLY_SIZE           4096
  38 #define OUT_BULK_BUFFER_SIZE            4096
  39
  40 struct dt_key;
  41 struct dt_rec;
  42 struct object_update_param;
  43 struct llog_update_record;
  44
  45 static inline size_t update_params_size(const struct update_params *params,
  46                                         unsigned int param_count)
  47 {
  48         struct object_update_param      *param;
  49         size_t total_size = sizeof(*params);
  50         unsigned int i;
  51
  52         param = (struct object_update_param *)&params->up_params[0];
  53         for (i = 0; i < param_count; i++) {
  54                 size_t size = object_update_param_size(param);
  55
  56                 param = (struct object_update_param *)((char *)param + size);
  57                 total_size += size;
  58         }
  59
  60         return total_size;
  61 }
  62
  63 static inline struct object_update_param *
  64 update_params_get_param(const struct update_params *params,
  65                         unsigned int index, unsigned int param_count)
  66 {
  67         struct object_update_param *param;
  68         unsigned int            i;
  69
  70         if (index > param_count)
  71                 return NULL;
  72
  73         param = (struct object_update_param *)&params->up_params[0];
  74         for (i = 0; i < index; i++)
  75                 param = (struct object_update_param *)((char *)param +
  76                         object_update_param_size(param));
  77
  78         return param;
  79 }
  80
  81 static inline void*
  82 update_params_get_param_buf(const struct update_params *params, __u16 index,
  83                             unsigned int param_count, __u16 *size)
  84 {
  85         struct object_update_param *param;
  86
  87         param = update_params_get_param(params, (unsigned int)index,
  88                                         param_count);
  89         if (param == NULL)
  90                 return NULL;
  91
  92         if (size != NULL)
  93                 *size = param->oup_len;
  94
  95         return param->oup_buf;
  96 }
  97
  98 static inline size_t
  99 update_op_size(unsigned int param_count)
 100 {
 101         return offsetof(struct update_op, uop_params_off[param_count]);
 102 }
 103
 104 static inline struct update_op *
 105 update_op_next_op(const struct update_op *uop)
 106 {
 107         return (struct update_op *)((char *)uop +
 108                                 update_op_size(uop->uop_param_count));
 109 }
 110
 111 static inline size_t update_ops_size(const struct update_ops *ops,
 112                                      unsigned int update_count)
 113 {
 114         struct update_op *op;
 115         size_t total_size = sizeof(*ops);
 116         unsigned int i;
 117
 118         op = (struct update_op *)&ops->uops_op[0];
 119         for (i = 0; i < update_count; i++, op = update_op_next_op(op))
 120                 total_size += update_op_size(op->uop_param_count);
 121
 122         return total_size;
 123 }
 124
 125 static inline struct update_params *
 126 update_records_get_params(const struct update_records *record)
 127 {
 128         return (struct update_params *)((char *)record +
 129                 offsetof(struct update_records, ur_ops) +
 130                 update_ops_size(&record->ur_ops, record->ur_update_count));
 131 }
 132
 133 static inline size_t
 134 update_records_size(const struct update_records *record)
 135 {
 136         size_t op_size = 0;
 137         size_t param_size = 0;
 138
 139         if (record->ur_update_count > 0)
 140                 op_size = update_ops_size(&record->ur_ops,
 141                                           record->ur_update_count);
 142         if (record->ur_param_count > 0) {
 143                 struct update_params *params;
 144
 145                 params = update_records_get_params(record);
 146                 param_size = update_params_size(params, record->ur_param_count);
 147         }
 148
 149         return cfs_size_round(offsetof(struct update_records, ur_ops) +
 150                               op_size + param_size);
 151 }
 152
 153 static inline size_t
 154 llog_update_record_size(const struct llog_update_record *lur)
 155 {
 156         return cfs_size_round(sizeof(lur->lur_hdr) +
 157                               update_records_size(&lur->lur_update_rec) +
 158                               sizeof(struct llog_rec_tail));
 159 }
 160
 161 static inline struct update_op *
 162 update_ops_get_op(const struct update_ops *ops, unsigned int index,
 163                   unsigned int update_count)
 164 {
 165         struct update_op *op;
 166         unsigned int i;
 167
 168         if (index > update_count)
 169                 return NULL;
 170
 171         op = (struct update_op *)&ops->uops_op[0];
 172         for (i = 0; i < index; i++)
 173                 op = update_op_next_op(op);
 174
 175         return op;
 176 }
 177
 178 static inline void
 179 *object_update_param_get(const struct object_update *update, size_t index,
 180                          size_t *size)
 181 {
 182         const struct    object_update_param *param;
 183         size_t          i;
 184
 185         if (index >= update->ou_params_count)
 186                 return ERR_PTR(-EINVAL);
 187
 188         param = &update->ou_params[0];
 189         for (i = 0; i < index; i++)
 190                 param = (struct object_update_param *)((char *)param +
 191                         object_update_param_size(param));
 192
 193         if (size != NULL)
 194                 *size = param->oup_len;
 195
 196         if (param->oup_len == 0)
 197                 return NULL;
 198
 199         return (void *)&param->oup_buf[0];
 200 }
 201
 202 static inline unsigned long
 203 object_update_request_size(const struct object_update_request *our)
 204 {
 205         unsigned long   size;
 206         size_t          i = 0;
 207
 208         size = offsetof(struct object_update_request, ourq_updates[0]);
 209         for (i = 0; i < our->ourq_count; i++) {
 210                 struct object_update *update;
 211
 212                 update = (struct object_update *)((char *)our + size);
 213                 size += object_update_size(update);
 214         }
 215         return size;
 216 }
 217
 218 static inline void
 219 object_update_result_insert(struct object_update_reply *reply,
 220                             void *data, size_t data_len, size_t index,
 221                             int rc)
 222 {
 223         struct object_update_result *update_result;
 224         char *ptr;
 225
 226         update_result = object_update_result_get(reply, index, NULL);
 227         LASSERT(update_result != NULL);
 228
 229         update_result->our_rc = ptlrpc_status_hton(rc);
 230         if (data_len > 0) {
 231                 LASSERT(data != NULL);
 232                 ptr = (char *)update_result +
 233                         cfs_size_round(sizeof(struct object_update_reply));
 234                 update_result->our_datalen = data_len;
 235                 memcpy(ptr, data, data_len);
 236         }
 237
 238         reply->ourp_lens[index] = cfs_size_round(data_len +
 239                                         sizeof(struct object_update_result));
 240 }
 241
 242 static inline int
 243 object_update_result_data_get(const struct object_update_reply *reply,
 244                               struct lu_buf *lbuf, size_t index)
 245 {
 246         struct object_update_result *update_result;
 247         size_t size = 0;
 248         int    result;
 249
 250         LASSERT(lbuf != NULL);
 251         update_result = object_update_result_get(reply, index, &size);
 252         if (update_result == NULL ||
 253             size < cfs_size_round(sizeof(struct object_update_reply)) ||
 254             update_result->our_datalen > size)
 255                 RETURN(-EFAULT);
 256
 257         result = ptlrpc_status_ntoh(update_result->our_rc);
 258         if (result < 0)
 259                 return result;
 260
 261         lbuf->lb_buf = update_result->our_data;
 262         lbuf->lb_len = update_result->our_datalen;
 263
 264         return 0;
 265 }
 266
 267 /**
 268  * Attached in the thandle to record the updates for distribute
 269  * distribution.
 270  */
 271 struct thandle_update_records {
 272         /* All of updates for the cross-MDT operation. */
 273         struct llog_update_record       *tur_update_records;
 274         size_t                          tur_update_records_buf_size;
 275
 276         /* All of parameters for the cross-MDT operation */
 277         struct update_params    *tur_update_params;
 278         unsigned int            tur_update_param_count;
 279         size_t                  tur_update_params_buf_size;
 280 };
 281
 282 #define TOP_THANDLE_MAGIC       0x20140917
 283 struct top_multiple_thandle {
 284         struct dt_device        *tmt_master_sub_dt;
 285         atomic_t                tmt_refcount;
 286         /* Other sub transactions will be listed here. */
 287         struct list_head        tmt_sub_thandle_list;
 288         spinlock_t              tmt_sub_lock;
 289
 290         struct list_head        tmt_commit_list;
 291         /* All of update records will packed here */
 292         struct thandle_update_records *tmt_update_records;
 293
 294         wait_queue_head_t       tmt_stop_waitq;
 295         __u64                   tmt_batchid;
 296         int                     tmt_result;
 297         __u32                   tmt_magic;
 298         size_t                  tmt_record_size;
 299         __u32                   tmt_committed:1;
 300 };
 301
 302 /* {top,sub}_thandle are used to manage distributed transactions which
 303  * include updates on several nodes. A top_handle represents the
 304  * whole operation, and sub_thandle represents updates on each node. */
 305 struct top_thandle {
 306         struct thandle          tt_super;
 307         /* The master sub transaction. */
 308         struct thandle          *tt_master_sub_thandle;
 309
 310         struct top_multiple_thandle *tt_multiple_thandle;
 311 };
 312
 313 struct sub_thandle_cookie {
 314         struct llog_cookie      stc_cookie;
 315         struct list_head        stc_list;
 316 };
 317
 318 /* Sub thandle is used to track multiple sub thandles under one parent
 319  * thandle */
 320 struct sub_thandle {
 321         struct thandle          *st_sub_th;
 322         struct dt_device        *st_dt;
 323         struct list_head        st_cookie_list;
 324         struct dt_txn_commit_cb st_commit_dcb;
 325         struct dt_txn_commit_cb st_stop_dcb;
 326         int                     st_result;
 327
 328         /* linked to top_thandle */
 329         struct list_head        st_sub_list;
 330
 331         /* If this sub thandle is committed */
 332         bool                    st_committed:1,
 333                                 st_stopped:1;
 334 };
 335
 336 struct tx_arg;
 337 typedef int (*tx_exec_func_t)(const struct lu_env *env, struct thandle *th,
 338                               struct tx_arg *ta);
 339
 340 /* Structure for holding one update execution */
 341 struct tx_arg {
 342         tx_exec_func_t           exec_fn;
 343         tx_exec_func_t           undo_fn;
 344         struct dt_object        *object;
 345         const char              *file;
 346         struct object_update_reply *reply;
 347         int                      line;
 348         int                      index;
 349         union {
 350                 struct {
 351                         struct dt_insert_rec     rec;
 352                         const struct dt_key     *key;
 353                 } insert;
 354                 struct {
 355                 } ref;
 356                 struct {
 357                         struct lu_attr   attr;
 358                 } attr_set;
 359                 struct {
 360                         struct lu_buf    buf;
 361                         const char      *name;
 362                         int              flags;
 363                         __u32            csum;
 364                 } xattr_set;
 365                 struct {
 366                         struct lu_attr                  attr;
 367                         struct dt_allocation_hint       hint;
 368                         struct dt_object_format         dof;
 369                         struct lu_fid                   fid;
 370                 } create;
 371                 struct {
 372                         struct lu_buf   buf;
 373                         loff_t          pos;
 374                 } write;
 375                 struct {
 376                         struct ost_body     *body;
 377                 } destroy;
 378         } u;
 379 };
 380
 381 /* Structure for holding all update executations of one transaction */
 382 struct thandle_exec_args {
 383         struct thandle          *ta_handle;
 384         int                     ta_argno;   /* used args */
 385         int                     ta_alloc_args; /* allocated args count */
 386         struct tx_arg           **ta_args;
 387 };
 388
 389 /* target/out_lib.c */
 390 int out_update_pack(const struct lu_env *env, struct object_update *update,
 391                     size_t *max_update_size, enum update_type op,
 392                     const struct lu_fid *fid, unsigned int params_count,
 393                     __u16 *param_sizes, const void **param_bufs);
 394 int out_create_pack(const struct lu_env *env, struct object_update *update,
 395                     size_t *max_update_size, const struct lu_fid *fid,
 396                     const struct lu_attr *attr, struct dt_allocation_hint *hint,
 397                     struct dt_object_format *dof);
 398 int out_object_destroy_pack(const struct lu_env *env,
 399                             struct object_update *update,
 400                             size_t *max_update_size,
 401                             const struct lu_fid *fid);
 402 int out_index_delete_pack(const struct lu_env *env,
 403                           struct object_update *update, size_t *max_update_size,
 404                           const struct lu_fid *fid, const struct dt_key *key);
 405 int out_index_insert_pack(const struct lu_env *env,
 406                           struct object_update *update, size_t *max_update_size,
 407                           const struct lu_fid *fid, const struct dt_rec *rec,
 408                           const struct dt_key *key);
 409 int out_xattr_set_pack(const struct lu_env *env,
 410                        struct object_update *update, size_t *max_update_size,
 411                        const struct lu_fid *fid, const struct lu_buf *buf,
 412                        const char *name, __u32 flag);
 413 int out_xattr_del_pack(const struct lu_env *env,
 414                        struct object_update *update, size_t *max_update_size,
 415                        const struct lu_fid *fid, const char *name);
 416 int out_attr_set_pack(const struct lu_env *env,
 417                       struct object_update *update, size_t *max_update_size,
 418                       const struct lu_fid *fid, const struct lu_attr *attr);
 419 int out_ref_add_pack(const struct lu_env *env,
 420                      struct object_update *update, size_t *max_update_size,
 421                      const struct lu_fid *fid);
 422 int out_ref_del_pack(const struct lu_env *env,
 423                      struct object_update *update, size_t *max_update_size,
 424                      const struct lu_fid *fid);
 425 int out_write_pack(const struct lu_env *env,
 426                    struct object_update *update, size_t *max_update_size,
 427                    const struct lu_fid *fid, const struct lu_buf *buf,
 428                    __u64 pos);
 429 int out_attr_get_pack(const struct lu_env *env,
 430                       struct object_update *update, size_t *max_update_size,
 431                       const struct lu_fid *fid);
 432 int out_index_lookup_pack(const struct lu_env *env,
 433                           struct object_update *update, size_t *max_update_size,
 434                           const struct lu_fid *fid, struct dt_rec *rec,
 435                           const struct dt_key *key);
 436 int out_xattr_get_pack(const struct lu_env *env,
 437                        struct object_update *update, size_t *max_update_size,
 438                        const struct lu_fid *fid, const char *name);
 439 int out_read_pack(const struct lu_env *env, struct object_update *update,
 440                   size_t *max_update_length, const struct lu_fid *fid,
 441                   size_t size, loff_t pos);
 442
 443 const char *update_op_str(__u16 opcode);
 444
 445 /* target/update_trans.c */
 446 struct thandle *thandle_get_sub_by_dt(const struct lu_env *env,
 447                                       struct thandle *th,
 448                                       struct dt_device *sub_dt);
 449
 450 static inline struct thandle *
 451 thandle_get_sub(const struct lu_env *env, struct thandle *th,
 452                  const struct dt_object *sub_obj)
 453 {
 454         return thandle_get_sub_by_dt(env, th, lu2dt_dev(sub_obj->do_lu.lo_dev));
 455 }
 456
 457 struct thandle *
 458 top_trans_create(const struct lu_env *env, struct dt_device *master_dev);
 459 int top_trans_start(const struct lu_env *env, struct dt_device *master_dev,
 460                     struct thandle *th);
 461 int top_trans_stop(const struct lu_env *env, struct dt_device *master_dev,
 462                    struct thandle *th);
 463 void top_multiple_thandle_destroy(struct top_multiple_thandle *tmt);
 464
 465 static inline void top_multiple_thandle_get(struct top_multiple_thandle *tmt)
 466 {
 467         atomic_inc(&tmt->tmt_refcount);
 468 }
 469
 470 static inline void top_multiple_thandle_put(struct top_multiple_thandle *tmt)
 471 {
 472         if (atomic_dec_and_test(&tmt->tmt_refcount))
 473                 top_multiple_thandle_destroy(tmt);
 474 }
 475
 476 struct sub_thandle *lookup_sub_thandle(struct top_multiple_thandle *tmt,
 477                                        struct dt_device *dt_dev);
 478 int sub_thandle_trans_create(const struct lu_env *env,
 479                              struct top_thandle *top_th,
 480                              struct sub_thandle *st);
 481
 482 /* update_records.c */
 483 size_t update_records_create_size(const struct lu_env *env,
 484                                   const struct lu_fid *fid,
 485                                   const struct lu_attr *attr,
 486                                   const struct dt_allocation_hint *hint,
 487                                   struct dt_object_format *dof);
 488 size_t update_records_attr_set_size(const struct lu_env *env,
 489                                     const struct lu_fid *fid,
 490                                     const struct lu_attr *attr);
 491 size_t update_records_ref_add_size(const struct lu_env *env,
 492                                    const struct lu_fid *fid);
 493 size_t update_records_ref_del_size(const struct lu_env *env,
 494                                    const struct lu_fid *fid);
 495 size_t update_records_object_destroy_size(const struct lu_env *env,
 496                                           const struct lu_fid *fid);
 497 size_t update_records_index_insert_size(const struct lu_env *env,
 498                                         const struct lu_fid *fid,
 499                                         const struct dt_rec *rec,
 500                                         const struct dt_key *key);
 501 size_t update_records_index_delete_size(const struct lu_env *env,
 502                                         const struct lu_fid *fid,
 503                                         const struct dt_key *key);
 504 size_t update_records_xattr_set_size(const struct lu_env *env,
 505                                      const struct lu_fid *fid,
 506                                      const struct lu_buf *buf,
 507                                      const char *name,
 508                                      __u32 flag);
 509 size_t update_records_xattr_del_size(const struct lu_env *env,
 510                                      const struct lu_fid *fid,
 511                                      const char *name);
 512 size_t update_records_write_size(const struct lu_env *env,
 513                                  const struct lu_fid *fid,
 514                                  const struct lu_buf *buf,
 515                                  __u64 pos);
 516 size_t update_records_punch_size(const struct lu_env *env,
 517                                  const struct lu_fid *fid,
 518                                  __u64 start, __u64 end);
 519
 520 int update_records_create_pack(const struct lu_env *env,
 521                                struct update_ops *ops,
 522                                unsigned int *op_count,
 523                                size_t *max_ops_size,
 524                                struct update_params *params,
 525                                unsigned int *param_count,
 526                                size_t *max_param_size,
 527                                const struct lu_fid *fid,
 528                                const struct lu_attr *attr,
 529                                const struct dt_allocation_hint *hint,
 530                                struct dt_object_format *dof);
 531 int update_records_attr_set_pack(const struct lu_env *env,
 532                                  struct update_ops *ops,
 533                                  unsigned int *op_count,
 534                                  size_t *max_ops_size,
 535                                  struct update_params *params,
 536                                  unsigned int *param_count,
 537                                  size_t *max_param_size,
 538                                  const struct lu_fid *fid,
 539                                  const struct lu_attr *attr);
 540 int update_records_ref_add_pack(const struct lu_env *env,
 541                                 struct update_ops *ops,
 542                                 unsigned int *op_count,
 543                                 size_t *max_ops_size,
 544                                 struct update_params *params,
 545                                 unsigned int *param_count,
 546                                 size_t *max_param_size,
 547                                 const struct lu_fid *fid);
 548 int update_records_ref_del_pack(const struct lu_env *env,
 549                                 struct update_ops *ops,
 550                                 unsigned int *op_count,
 551                                 size_t *max_ops_size,
 552                                 struct update_params *params,
 553                                 unsigned int *param_count,
 554                                 size_t *max_param_size,
 555                                 const struct lu_fid *fid);
 556 int update_records_object_destroy_pack(const struct lu_env *env,
 557                                        struct update_ops *ops,
 558                                        unsigned int *op_count,
 559                                        size_t *max_ops_size,
 560                                        struct update_params *params,
 561                                        unsigned int *param_count,
 562                                        size_t *max_param_size,
 563                                        const struct lu_fid *fid);
 564 int update_records_index_insert_pack(const struct lu_env *env,
 565                                      struct update_ops *ops,
 566                                      unsigned int *op_count,
 567                                      size_t *max_ops_size,
 568                                      struct update_params *params,
 569                                      unsigned int *param_count,
 570                                      size_t *max_param_size,
 571                                      const struct lu_fid *fid,
 572                                      const struct dt_rec *rec,
 573                                      const struct dt_key *key);
 574 int update_records_index_delete_pack(const struct lu_env *env,
 575                                      struct update_ops *ops,
 576                                      unsigned int *op_count,
 577                                      size_t *max_ops_size,
 578                                      struct update_params *params,
 579                                      unsigned int *param_count,
 580                                      size_t *max_param_size,
 581                                      const struct lu_fid *fid,
 582                                      const struct dt_key *key);
 583 int update_records_xattr_set_pack(const struct lu_env *env,
 584                                   struct update_ops *ops,
 585                                   unsigned int *op_count,
 586                                   size_t *max_ops_size,
 587                                   struct update_params *params,
 588                                   unsigned int *param_count,
 589                                   size_t *max_param_size,
 590                                   const struct lu_fid *fid,
 591                                   const struct lu_buf *buf, const char *name,
 592                                   __u32 flag);
 593 int update_records_xattr_del_pack(const struct lu_env *env,
 594                                   struct update_ops *ops,
 595                                   unsigned int *op_count,
 596                                   size_t *max_ops_size,
 597                                   struct update_params *params,
 598                                   unsigned int *param_count,
 599                                   size_t *max_param_size,
 600                                   const struct lu_fid *fid,
 601                                   const char *name);
 602 int update_records_write_pack(const struct lu_env *env,
 603                               struct update_ops *ops,
 604                               unsigned int *op_count,
 605                               size_t *max_ops_size,
 606                               struct update_params *params,
 607                               unsigned int *param_count,
 608                               size_t *max_param_size,
 609                               const struct lu_fid *fid,
 610                               const struct lu_buf *buf,
 611                               __u64 pos);
 612 int update_records_punch_pack(const struct lu_env *env,
 613                               struct update_ops *ops,
 614                               unsigned int *op_count,
 615                               size_t *max_ops_size,
 616                               struct update_params *params,
 617                               unsigned int *param_count,
 618                               size_t *max_param_size,
 619                               const struct lu_fid *fid,
 620                               __u64 start, __u64 end);
 621 int update_records_noop_pack(const struct lu_env *env,
 622                              struct update_ops *ops,
 623                              unsigned int *op_count,
 624                              size_t *max_ops_size,
 625                              struct update_params *params,
 626                              unsigned int *param_count,
 627                              size_t *max_param_size,
 628                              const struct lu_fid *fid);
 629
 630 int tur_update_records_extend(struct thandle_update_records *tur,
 631                               size_t new_size);
 632 int tur_update_params_extend(struct thandle_update_records *tur,
 633                              size_t new_size);
 634 int tur_update_extend(struct thandle_update_records *tur,
 635                       size_t new_op_size, size_t new_param_size);
 636
 637 #define update_record_pack(name, th, ...)                               \
 638 ({                                                                      \
 639         struct top_thandle *top_th;                                     \
 640         struct top_multiple_thandle *tmt;                               \
 641         struct thandle_update_records *tur;                             \
 642         struct llog_update_record     *lur;                             \
 643         size_t          avail_param_size;                               \
 644         size_t          avail_op_size;                                  \
 645         int             ret;                                            \
 646                                                                         \
 647         while (1) {                                                     \
 648                 top_th = container_of(th, struct top_thandle, tt_super);\
 649                 tmt = top_th->tt_multiple_thandle;                      \
 650                 tur = tmt->tmt_update_records;                          \
 651                 lur = tur->tur_update_records;                          \
 652                 avail_param_size = tur->tur_update_params_buf_size -    \
 653                              update_params_size(tur->tur_update_params, \
 654                                         tur->tur_update_param_count);   \
 655                 avail_op_size = tur->tur_update_records_buf_size -      \
 656                                 llog_update_record_size(lur);           \
 657                 ret = update_records_##name##_pack(env,                 \
 658                                           &lur->lur_update_rec.ur_ops,  \
 659                                   &lur->lur_update_rec.ur_update_count, \
 660                                   &avail_op_size,                       \
 661                                   tur->tur_update_params,               \
 662                                   &tur->tur_update_param_count,         \
 663                                   &avail_param_size, __VA_ARGS__);      \
 664                 if (ret == -E2BIG) {                                    \
 665                         ret = tur_update_extend(tur, avail_op_size,     \
 666                                                    avail_param_size);   \
 667                         if (ret != 0)                                   \
 668                                 break;                                  \
 669                         continue;                                       \
 670                 } else {                                                \
 671                         break;                                          \
 672                 }                                                       \
 673         }                                                               \
 674         ret;                                                            \
 675 })
 676
 677 #define update_record_size(env, name, th, ...)                          \
 678 ({                                                                      \
 679         struct top_thandle *top_th;                                     \
 680         struct top_multiple_thandle *tmt;                               \
 681                                                                         \
 682         top_th = container_of(th, struct top_thandle, tt_super);        \
 683                                                                         \
 684         LASSERT(top_th->tt_multiple_thandle != NULL);                   \
 685         tmt = top_th->tt_multiple_thandle;                              \
 686         tmt->tmt_record_size +=                                         \
 687                 update_records_##name##_size(env, __VA_ARGS__);         \
 688 })
 689 #endif