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, 2015, 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 <dt_object.h>
  34 #include <lustre_net.h>
  35 #include <obj_update.h>
  36
  37 #define OUT_UPDATE_INIT_BUFFER_SIZE     4096
  38 #define OUT_UPDATE_REPLY_SIZE           4096
  39 #define OUT_BULK_BUFFER_SIZE            4096
  40
  41 struct dt_key;
  42 struct dt_rec;
  43 struct object_update_param;
  44 struct llog_update_record;
  45
  46 static inline size_t update_params_size(const struct update_params *params,
  47                                         unsigned int param_count)
  48 {
  49         struct object_update_param      *param;
  50         size_t total_size = sizeof(*params);
  51         unsigned int i;
  52
  53         param = (struct object_update_param *)&params->up_params[0];
  54         for (i = 0; i < param_count; i++) {
  55                 size_t size = object_update_param_size(param);
  56
  57                 param = (struct object_update_param *)((char *)param + size);
  58                 total_size += size;
  59         }
  60
  61         return total_size;
  62 }
  63
  64 static inline struct object_update_param *
  65 update_params_get_param(const struct update_params *params,
  66                         unsigned int index, unsigned int param_count)
  67 {
  68         struct object_update_param *param;
  69         unsigned int            i;
  70
  71         if (index > param_count)
  72                 return NULL;
  73
  74         param = (struct object_update_param *)&params->up_params[0];
  75         for (i = 0; i < index; i++)
  76                 param = (struct object_update_param *)((char *)param +
  77                         object_update_param_size(param));
  78
  79         return param;
  80 }
  81
  82 static inline void*
  83 update_params_get_param_buf(const struct update_params *params, __u16 index,
  84                             unsigned int param_count, __u16 *size)
  85 {
  86         struct object_update_param *param;
  87
  88         param = update_params_get_param(params, (unsigned int)index,
  89                                         param_count);
  90         if (param == NULL)
  91                 return NULL;
  92
  93         if (size != NULL)
  94                 *size = param->oup_len;
  95
  96         return param->oup_buf;
  97 }
  98
  99 static inline size_t
 100 update_op_size(unsigned int param_count)
 101 {
 102         return offsetof(struct update_op, uop_params_off[param_count]);
 103 }
 104
 105 static inline struct update_op *
 106 update_op_next_op(const struct update_op *uop)
 107 {
 108         return (struct update_op *)((char *)uop +
 109                                 update_op_size(uop->uop_param_count));
 110 }
 111
 112 static inline size_t update_ops_size(const struct update_ops *ops,
 113                                      unsigned int update_count)
 114 {
 115         struct update_op *op;
 116         size_t total_size = sizeof(*ops);
 117         unsigned int i;
 118
 119         op = (struct update_op *)&ops->uops_op[0];
 120         for (i = 0; i < update_count; i++, op = update_op_next_op(op))
 121                 total_size += update_op_size(op->uop_param_count);
 122
 123         return total_size;
 124 }
 125
 126 static inline struct update_params *
 127 update_records_get_params(const struct update_records *record)
 128 {
 129         return (struct update_params *)((char *)record +
 130                 offsetof(struct update_records, ur_ops) +
 131                 update_ops_size(&record->ur_ops, record->ur_update_count));
 132 }
 133
 134 static inline size_t
 135 update_records_size(const struct update_records *record)
 136 {
 137         size_t op_size = 0;
 138         size_t param_size = 0;
 139
 140         if (record->ur_update_count > 0)
 141                 op_size = update_ops_size(&record->ur_ops,
 142                                           record->ur_update_count);
 143         if (record->ur_param_count > 0) {
 144                 struct update_params *params;
 145
 146                 params = update_records_get_params(record);
 147                 param_size = update_params_size(params, record->ur_param_count);
 148         }
 149
 150         return cfs_size_round(offsetof(struct update_records, ur_ops) +
 151                               op_size + param_size);
 152 }
 153
 154 static inline size_t
 155 llog_update_record_size(const struct llog_update_record *lur)
 156 {
 157         return cfs_size_round(sizeof(lur->lur_hdr) +
 158                               update_records_size(&lur->lur_update_rec) +
 159                               sizeof(struct llog_rec_tail));
 160 }
 161
 162 static inline struct update_op *
 163 update_ops_get_op(const struct update_ops *ops, unsigned int index,
 164                   unsigned int update_count)
 165 {
 166         struct update_op *op;
 167         unsigned int i;
 168
 169         if (index > update_count)
 170                 return NULL;
 171
 172         op = (struct update_op *)&ops->uops_op[0];
 173         for (i = 0; i < index; i++)
 174                 op = update_op_next_op(op);
 175
 176         return op;
 177 }
 178
 179 static inline void
 180 *object_update_param_get(const struct object_update *update, size_t index,
 181                          size_t *size)
 182 {
 183         const struct    object_update_param *param;
 184         size_t          i;
 185
 186         if (index >= update->ou_params_count)
 187                 return ERR_PTR(-EINVAL);
 188
 189         param = &update->ou_params[0];
 190         for (i = 0; i < index; i++)
 191                 param = (struct object_update_param *)((char *)param +
 192                         object_update_param_size(param));
 193
 194         if (size != NULL)
 195                 *size = param->oup_len;
 196
 197         if (param->oup_len == 0)
 198                 return ERR_PTR(-ENODATA);
 199
 200         return (void *)&param->oup_buf[0];
 201 }
 202
 203 static inline unsigned long
 204 object_update_request_size(const struct object_update_request *our)
 205 {
 206         unsigned long   size;
 207         size_t          i = 0;
 208
 209         size = offsetof(struct object_update_request, ourq_updates[0]);
 210         for (i = 0; i < our->ourq_count; i++) {
 211                 struct object_update *update;
 212
 213                 update = (struct object_update *)((char *)our + size);
 214                 size += object_update_size(update);
 215         }
 216         return size;
 217 }
 218
 219 static inline void
 220 object_update_result_insert(struct object_update_reply *reply,
 221                             void *data, size_t data_len, size_t index,
 222                             int rc)
 223 {
 224         struct object_update_result *update_result;
 225         char *ptr;
 226
 227         update_result = object_update_result_get(reply, index, NULL);
 228         LASSERT(update_result != NULL);
 229
 230         update_result->our_rc = ptlrpc_status_hton(rc);
 231         if (data != NULL && data_len > 0) {
 232                 LASSERT(data != NULL);
 233                 ptr = (char *)update_result +
 234                         cfs_size_round(sizeof(struct object_update_reply));
 235                 update_result->our_datalen = data_len;
 236                 memcpy(ptr, data, data_len);
 237         }
 238
 239         reply->ourp_lens[index] = cfs_size_round(data_len +
 240                                         sizeof(struct object_update_result));
 241 }
 242
 243 static inline int
 244 object_update_result_data_get(const struct object_update_reply *reply,
 245                               struct lu_buf *lbuf, size_t index)
 246 {
 247         struct object_update_result *update_result;
 248         size_t size = 0;
 249         int    result;
 250
 251         LASSERT(lbuf != NULL);
 252         update_result = object_update_result_get(reply, index, &size);
 253         if (update_result == NULL ||
 254             size < cfs_size_round(sizeof(struct object_update_reply)) ||
 255             update_result->our_datalen > size)
 256                 RETURN(-EFAULT);
 257
 258         result = ptlrpc_status_ntoh(update_result->our_rc);
 259         if (result < 0)
 260                 return result;
 261
 262         lbuf->lb_buf = update_result->our_data;
 263         lbuf->lb_len = update_result->our_datalen;
 264
 265         return result;
 266 }
 267
 268 /**
 269  * Attached in the thandle to record the updates for distribute
 270  * distribution.
 271  */
 272 struct thandle_update_records {
 273         /* All of updates for the cross-MDT operation, vmalloc'd. */
 274         struct llog_update_record       *tur_update_records;
 275         size_t                          tur_update_records_buf_size;
 276
 277         /* All of parameters for the cross-MDT operation, vmalloc'd */
 278         struct update_params    *tur_update_params;
 279         unsigned int            tur_update_param_count;
 280         size_t                  tur_update_params_buf_size;
 281 };
 282
 283 #define TOP_THANDLE_MAGIC       0x20140917
 284 struct top_multiple_thandle {
 285         struct dt_device        *tmt_master_sub_dt;
 286         atomic_t                tmt_refcount;
 287         /* Other sub transactions will be listed here. */
 288         struct list_head        tmt_sub_thandle_list;
 289         spinlock_t              tmt_sub_lock;
 290
 291         struct list_head        tmt_commit_list;
 292         /* All of update records will packed here */
 293         struct thandle_update_records *tmt_update_records;
 294
 295         wait_queue_head_t       tmt_stop_waitq;
 296         __u64                   tmt_batchid;
 297         int                     tmt_result;
 298         __u32                   tmt_magic;
 299         size_t                  tmt_record_size;
 300         __u32                   tmt_committed:1;
 301 };
 302
 303 /* {top,sub}_thandle are used to manage distributed transactions which
 304  * include updates on several nodes. A top_handle represents the
 305  * whole operation, and sub_thandle represents updates on each node. */
 306 struct top_thandle {
 307         struct thandle          tt_super;
 308         /* The master sub transaction. */
 309         struct thandle          *tt_master_sub_thandle;
 310
 311         struct top_multiple_thandle *tt_multiple_thandle;
 312 };
 313
 314 struct sub_thandle_cookie {
 315         struct llog_cookie      stc_cookie;
 316         struct list_head        stc_list;
 317 };
 318
 319 /* Sub thandle is used to track multiple sub thandles under one parent
 320  * thandle */
 321 struct sub_thandle {
 322         struct thandle          *st_sub_th;
 323         struct dt_device        *st_dt;
 324         struct list_head        st_cookie_list;
 325         struct dt_txn_commit_cb st_commit_dcb;
 326         struct dt_txn_commit_cb st_stop_dcb;
 327         int                     st_result;
 328
 329         /* linked to top_thandle */
 330         struct list_head        st_sub_list;
 331
 332         /* If this sub thandle is committed */
 333         bool                    st_committed:1,
 334                                 st_stopped:1,
 335                                 st_started:1;
 336 };
 337
 338 struct tx_arg;
 339 typedef int (*tx_exec_func_t)(const struct lu_env *env, struct thandle *th,
 340                               struct tx_arg *ta);
 341
 342 /* Structure for holding one update execution */
 343 struct tx_arg {
 344         tx_exec_func_t           exec_fn;
 345         tx_exec_func_t           undo_fn;
 346         struct dt_object        *object;
 347         const char              *file;
 348         struct object_update_reply *reply;
 349         int                      line;
 350         int                      index;
 351         union {
 352                 struct {
 353                         struct dt_insert_rec     rec;
 354                         const struct dt_key     *key;
 355                 } insert;
 356                 struct {
 357                 } ref;
 358                 struct {
 359                         struct lu_attr   attr;
 360                 } attr_set;
 361                 struct {
 362                         struct lu_buf    buf;
 363                         const char      *name;
 364                         int              flags;
 365                         __u32            csum;
 366                 } xattr_set;
 367                 struct {
 368                         struct lu_attr                  attr;
 369                         struct dt_allocation_hint       hint;
 370                         struct dt_object_format         dof;
 371                         struct lu_fid                   fid;
 372                 } create;
 373                 struct {
 374                         struct lu_buf   buf;
 375                         loff_t          pos;
 376                 } write;
 377                 struct {
 378                         struct ost_body     *body;
 379                 } destroy;
 380         } u;
 381 };
 382
 383 /* Structure for holding all update executations of one transaction */
 384 struct thandle_exec_args {
 385         struct thandle          *ta_handle;
 386         int                     ta_argno;   /* used args */
 387         int                     ta_alloc_args; /* allocated args count */
 388         struct tx_arg           **ta_args;
 389 };
 390
 391 /* target/out_lib.c */
 392 int out_update_pack(const struct lu_env *env, struct object_update *update,
 393                     size_t *max_update_size, enum update_type op,
 394                     const struct lu_fid *fid, unsigned int params_count,
 395                     __u16 *param_sizes, const void **param_bufs,
 396                     __u32 reply_size);
 397 int out_create_pack(const struct lu_env *env, struct object_update *update,
 398                     size_t *max_update_size, const struct lu_fid *fid,
 399                     const struct lu_attr *attr, struct dt_allocation_hint *hint,
 400                     struct dt_object_format *dof);
 401 int out_object_destroy_pack(const struct lu_env *env,
 402                             struct object_update *update,
 403                             size_t *max_update_size,
 404                             const struct lu_fid *fid);
 405 int out_index_delete_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_key *key);
 408 int out_index_insert_pack(const struct lu_env *env,
 409                           struct object_update *update, size_t *max_update_size,
 410                           const struct lu_fid *fid, const struct dt_rec *rec,
 411                           const struct dt_key *key);
 412 int out_xattr_set_pack(const struct lu_env *env,
 413                        struct object_update *update, size_t *max_update_size,
 414                        const struct lu_fid *fid, const struct lu_buf *buf,
 415                        const char *name, __u32 flag);
 416 int out_xattr_del_pack(const struct lu_env *env,
 417                        struct object_update *update, size_t *max_update_size,
 418                        const struct lu_fid *fid, const char *name);
 419 int out_attr_set_pack(const struct lu_env *env,
 420                       struct object_update *update, size_t *max_update_size,
 421                       const struct lu_fid *fid, const struct lu_attr *attr);
 422 int out_ref_add_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_ref_del_pack(const struct lu_env *env,
 426                      struct object_update *update, size_t *max_update_size,
 427                      const struct lu_fid *fid);
 428 int out_write_pack(const struct lu_env *env,
 429                    struct object_update *update, size_t *max_update_size,
 430                    const struct lu_fid *fid, const struct lu_buf *buf,
 431                    __u64 pos);
 432 int out_attr_get_pack(const struct lu_env *env,
 433                       struct object_update *update, size_t *max_update_size,
 434                       const struct lu_fid *fid);
 435 int out_index_lookup_pack(const struct lu_env *env,
 436                           struct object_update *update, size_t *max_update_size,
 437                           const struct lu_fid *fid, struct dt_rec *rec,
 438                           const struct dt_key *key);
 439 int out_xattr_get_pack(const struct lu_env *env,
 440                        struct object_update *update, size_t *max_update_size,
 441                        const struct lu_fid *fid, const char *name,
 442                        const int bufsize);
 443 int out_read_pack(const struct lu_env *env, struct object_update *update,
 444                   size_t *max_update_length, const struct lu_fid *fid,
 445                   size_t size, loff_t pos);
 446
 447 const char *update_op_str(__u16 opcode);
 448
 449 /* target/update_trans.c */
 450 struct thandle *thandle_get_sub_by_dt(const struct lu_env *env,
 451                                       struct thandle *th,
 452                                       struct dt_device *sub_dt);
 453
 454 static inline struct thandle *
 455 thandle_get_sub(const struct lu_env *env, struct thandle *th,
 456                  const struct dt_object *sub_obj)
 457 {
 458         return thandle_get_sub_by_dt(env, th, lu2dt_dev(sub_obj->do_lu.lo_dev));
 459 }
 460
 461 struct thandle *
 462 top_trans_create(const struct lu_env *env, struct dt_device *master_dev);
 463 int top_trans_start(const struct lu_env *env, struct dt_device *master_dev,
 464                     struct thandle *th);
 465 int top_trans_stop(const struct lu_env *env, struct dt_device *master_dev,
 466                    struct thandle *th);
 467 void top_multiple_thandle_destroy(struct top_multiple_thandle *tmt);
 468
 469 static inline void top_multiple_thandle_get(struct top_multiple_thandle *tmt)
 470 {
 471         atomic_inc(&tmt->tmt_refcount);
 472 }
 473
 474 static inline void top_multiple_thandle_put(struct top_multiple_thandle *tmt)
 475 {
 476         if (atomic_dec_and_test(&tmt->tmt_refcount))
 477                 top_multiple_thandle_destroy(tmt);
 478 }
 479
 480 struct sub_thandle *lookup_sub_thandle(struct top_multiple_thandle *tmt,
 481                                        struct dt_device *dt_dev);
 482 int sub_thandle_trans_create(const struct lu_env *env,
 483                              struct top_thandle *top_th,
 484                              struct sub_thandle *st);
 485
 486 /* update_records.c */
 487 size_t update_records_create_size(const struct lu_env *env,
 488                                   const struct lu_fid *fid,
 489                                   const struct lu_attr *attr,
 490                                   const struct dt_allocation_hint *hint,
 491                                   struct dt_object_format *dof);
 492 size_t update_records_attr_set_size(const struct lu_env *env,
 493                                     const struct lu_fid *fid,
 494                                     const struct lu_attr *attr);
 495 size_t update_records_ref_add_size(const struct lu_env *env,
 496                                    const struct lu_fid *fid);
 497 size_t update_records_ref_del_size(const struct lu_env *env,
 498                                    const struct lu_fid *fid);
 499 size_t update_records_object_destroy_size(const struct lu_env *env,
 500                                           const struct lu_fid *fid);
 501 size_t update_records_index_insert_size(const struct lu_env *env,
 502                                         const struct lu_fid *fid,
 503                                         const struct dt_rec *rec,
 504                                         const struct dt_key *key);
 505 size_t update_records_index_delete_size(const struct lu_env *env,
 506                                         const struct lu_fid *fid,
 507                                         const struct dt_key *key);
 508 size_t update_records_xattr_set_size(const struct lu_env *env,
 509                                      const struct lu_fid *fid,
 510                                      const struct lu_buf *buf,
 511                                      const char *name,
 512                                      __u32 flag);
 513 size_t update_records_xattr_del_size(const struct lu_env *env,
 514                                      const struct lu_fid *fid,
 515                                      const char *name);
 516 size_t update_records_write_size(const struct lu_env *env,
 517                                  const struct lu_fid *fid,
 518                                  const struct lu_buf *buf,
 519                                  __u64 pos);
 520 size_t update_records_punch_size(const struct lu_env *env,
 521                                  const struct lu_fid *fid,
 522                                  __u64 start, __u64 end);
 523
 524 int update_records_create_pack(const struct lu_env *env,
 525                                struct update_ops *ops,
 526                                unsigned int *op_count,
 527                                size_t *max_ops_size,
 528                                struct update_params *params,
 529                                unsigned int *param_count,
 530                                size_t *max_param_size,
 531                                const struct lu_fid *fid,
 532                                const struct lu_attr *attr,
 533                                const struct dt_allocation_hint *hint,
 534                                struct dt_object_format *dof);
 535 int update_records_attr_set_pack(const struct lu_env *env,
 536                                  struct update_ops *ops,
 537                                  unsigned int *op_count,
 538                                  size_t *max_ops_size,
 539                                  struct update_params *params,
 540                                  unsigned int *param_count,
 541                                  size_t *max_param_size,
 542                                  const struct lu_fid *fid,
 543                                  const struct lu_attr *attr);
 544 int update_records_ref_add_pack(const struct lu_env *env,
 545                                 struct update_ops *ops,
 546                                 unsigned int *op_count,
 547                                 size_t *max_ops_size,
 548                                 struct update_params *params,
 549                                 unsigned int *param_count,
 550                                 size_t *max_param_size,
 551                                 const struct lu_fid *fid);
 552 int update_records_ref_del_pack(const struct lu_env *env,
 553                                 struct update_ops *ops,
 554                                 unsigned int *op_count,
 555                                 size_t *max_ops_size,
 556                                 struct update_params *params,
 557                                 unsigned int *param_count,
 558                                 size_t *max_param_size,
 559                                 const struct lu_fid *fid);
 560 int update_records_object_destroy_pack(const struct lu_env *env,
 561                                        struct update_ops *ops,
 562                                        unsigned int *op_count,
 563                                        size_t *max_ops_size,
 564                                        struct update_params *params,
 565                                        unsigned int *param_count,
 566                                        size_t *max_param_size,
 567                                        const struct lu_fid *fid);
 568 int update_records_index_insert_pack(const struct lu_env *env,
 569                                      struct update_ops *ops,
 570                                      unsigned int *op_count,
 571                                      size_t *max_ops_size,
 572                                      struct update_params *params,
 573                                      unsigned int *param_count,
 574                                      size_t *max_param_size,
 575                                      const struct lu_fid *fid,
 576                                      const struct dt_rec *rec,
 577                                      const struct dt_key *key);
 578 int update_records_index_delete_pack(const struct lu_env *env,
 579                                      struct update_ops *ops,
 580                                      unsigned int *op_count,
 581                                      size_t *max_ops_size,
 582                                      struct update_params *params,
 583                                      unsigned int *param_count,
 584                                      size_t *max_param_size,
 585                                      const struct lu_fid *fid,
 586                                      const struct dt_key *key);
 587 int update_records_xattr_set_pack(const struct lu_env *env,
 588                                   struct update_ops *ops,
 589                                   unsigned int *op_count,
 590                                   size_t *max_ops_size,
 591                                   struct update_params *params,
 592                                   unsigned int *param_count,
 593                                   size_t *max_param_size,
 594                                   const struct lu_fid *fid,
 595                                   const struct lu_buf *buf, const char *name,
 596                                   __u32 flag);
 597 int update_records_xattr_del_pack(const struct lu_env *env,
 598                                   struct update_ops *ops,
 599                                   unsigned int *op_count,
 600                                   size_t *max_ops_size,
 601                                   struct update_params *params,
 602                                   unsigned int *param_count,
 603                                   size_t *max_param_size,
 604                                   const struct lu_fid *fid,
 605                                   const char *name);
 606 int update_records_write_pack(const struct lu_env *env,
 607                               struct update_ops *ops,
 608                               unsigned int *op_count,
 609                               size_t *max_ops_size,
 610                               struct update_params *params,
 611                               unsigned int *param_count,
 612                               size_t *max_param_size,
 613                               const struct lu_fid *fid,
 614                               const struct lu_buf *buf,
 615                               __u64 pos);
 616 int update_records_punch_pack(const struct lu_env *env,
 617                               struct update_ops *ops,
 618                               unsigned int *op_count,
 619                               size_t *max_ops_size,
 620                               struct update_params *params,
 621                               unsigned int *param_count,
 622                               size_t *max_param_size,
 623                               const struct lu_fid *fid,
 624                               __u64 start, __u64 end);
 625 int update_records_noop_pack(const struct lu_env *env,
 626                              struct update_ops *ops,
 627                              unsigned int *op_count,
 628                              size_t *max_ops_size,
 629                              struct update_params *params,
 630                              unsigned int *param_count,
 631                              size_t *max_param_size,
 632                              const struct lu_fid *fid);
 633
 634 int tur_update_records_extend(struct thandle_update_records *tur,
 635                               size_t new_size);
 636 int tur_update_params_extend(struct thandle_update_records *tur,
 637                              size_t new_size);
 638 int tur_update_extend(struct thandle_update_records *tur,
 639                       size_t new_op_size, size_t new_param_size);
 640
 641 #define update_record_pack(name, th, ...)                               \
 642 ({                                                                      \
 643         struct top_thandle *top_th;                                     \
 644         struct top_multiple_thandle *tmt;                               \
 645         struct thandle_update_records *tur;                             \
 646         struct llog_update_record     *lur;                             \
 647         size_t          avail_param_size;                               \
 648         size_t          avail_op_size;                                  \
 649         int             ret;                                            \
 650                                                                         \
 651         while (1) {                                                     \
 652                 top_th = container_of(th, struct top_thandle, tt_super);\
 653                 tmt = top_th->tt_multiple_thandle;                      \
 654                 tur = tmt->tmt_update_records;                          \
 655                 lur = tur->tur_update_records;                          \
 656                 avail_param_size = tur->tur_update_params_buf_size -    \
 657                              update_params_size(tur->tur_update_params, \
 658                                         tur->tur_update_param_count);   \
 659                 avail_op_size = tur->tur_update_records_buf_size -      \
 660                                 llog_update_record_size(lur);           \
 661                 ret = update_records_##name##_pack(env,                 \
 662                                           &lur->lur_update_rec.ur_ops,  \
 663                                   &lur->lur_update_rec.ur_update_count, \
 664                                   &avail_op_size,                       \
 665                                   tur->tur_update_params,               \
 666                                   &tur->tur_update_param_count,         \
 667                                   &avail_param_size, __VA_ARGS__);      \
 668                 if (ret == -E2BIG) {                                    \
 669                         ret = tur_update_extend(tur, avail_op_size,     \
 670                                                    avail_param_size);   \
 671                         if (ret != 0)                                   \
 672                                 break;                                  \
 673                         continue;                                       \
 674                 } else {                                                \
 675                         break;                                          \
 676                 }                                                       \
 677         }                                                               \
 678         ret;                                                            \
 679 })
 680
 681 #define update_record_size(env, name, th, ...)                          \
 682 ({                                                                      \
 683         struct top_thandle *top_th;                                     \
 684         struct top_multiple_thandle *tmt;                               \
 685                                                                         \
 686         top_th = container_of(th, struct top_thandle, tt_super);        \
 687                                                                         \
 688         LASSERT(top_th->tt_multiple_thandle != NULL);                   \
 689         tmt = top_th->tt_multiple_thandle;                              \
 690         tmt->tmt_record_size +=                                         \
 691                 update_records_##name##_size(env, __VA_ARGS__);         \
 692 })
 693 #endif