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 /* 16KB, the current biggest size is llog header(8KB) */
  38 #define OUT_UPDATE_REPLY_SIZE           16384
  39
  40 struct dt_key;
  41 struct dt_rec;
  42 struct object_update_param;
  43
  44 struct update_params {
  45         struct object_update_param      up_params[0];
  46 };
  47
  48 static inline size_t update_params_size(const struct update_params *params,
  49                                         unsigned int param_count)
  50 {
  51         struct object_update_param      *param;
  52         size_t total_size = sizeof(*params);
  53         unsigned int i;
  54
  55         param = (struct object_update_param *)&params->up_params[0];
  56         for (i = 0; i < param_count; i++) {
  57                 size_t size = object_update_param_size(param);
  58
  59                 param = (struct object_update_param *)((char *)param + size);
  60                 total_size += size;
  61         }
  62
  63         return total_size;
  64 }
  65
  66 static inline struct object_update_param *
  67 update_params_get_param(const struct update_params *params,
  68                         unsigned int index, unsigned int param_count)
  69 {
  70         struct object_update_param *param;
  71         unsigned int            i;
  72
  73         if (index > param_count)
  74                 return NULL;
  75
  76         param = (struct object_update_param *)&params->up_params[0];
  77         for (i = 0; i < index; i++)
  78                 param = (struct object_update_param *)((char *)param +
  79                         object_update_param_size(param));
  80
  81         return param;
  82 }
  83
  84 static inline void*
  85 update_params_get_param_buf(const struct update_params *params, __u16 index,
  86                             unsigned int param_count, __u16 *size)
  87 {
  88         struct object_update_param *param;
  89
  90         param = update_params_get_param(params, (unsigned int)index,
  91                                         param_count);
  92         if (param == NULL)
  93                 return NULL;
  94
  95         if (size != NULL)
  96                 *size = param->oup_len;
  97
  98         return param->oup_buf;
  99 }
 100
 101 struct update_op {
 102         struct lu_fid uop_fid;
 103         __u16   uop_type;
 104         __u16   uop_param_count;
 105         __u16   uop_params_off[0];
 106 };
 107
 108 static inline size_t
 109 update_op_size(unsigned int param_count)
 110 {
 111         return offsetof(struct update_op, uop_params_off[param_count]);
 112 }
 113
 114 static inline struct update_op *
 115 update_op_next_op(const struct update_op *uop)
 116 {
 117         return (struct update_op *)((char *)uop +
 118                                 update_op_size(uop->uop_param_count));
 119 }
 120
 121 /* All of updates in the mulitple_update_record */
 122 struct update_ops {
 123         struct update_op        uops_op[0];
 124 };
 125
 126 static inline size_t update_ops_size(const struct update_ops *ops,
 127                                      unsigned int update_count)
 128 {
 129         struct update_op *op;
 130         size_t total_size = sizeof(*ops);
 131         unsigned int i;
 132
 133         op = (struct update_op *)&ops->uops_op[0];
 134         for (i = 0; i < update_count; i++, op = update_op_next_op(op))
 135                 total_size += update_op_size(op->uop_param_count);
 136
 137         return total_size;
 138 }
 139
 140 /*
 141  * This is the update record format used to store the updates in
 142  * disk. All updates of the operation will be stored in ur_ops.
 143  * All of parameters for updates of the operation will be stored
 144  * in ur_params.
 145  * To save the space of the record, parameters in ur_ops will only
 146  * remember their offset in ur_params, so to avoid storing duplicate
 147  * parameters in ur_params, which can help us save a lot space for
 148  * operation like creating striped directory.
 149  */
 150 struct update_records {
 151         __u64                   ur_master_transno;
 152         __u64                   ur_batchid;
 153         __u32                   ur_flags;
 154         __u32                   ur_param_count;
 155         __u32                   ur_update_count;
 156         struct update_ops       ur_ops;
 157          /* Note ur_ops has a variable size, so comment out
 158           * the following ur_params, in case some use it directly
 159           * update_records->ur_params
 160           *
 161           * struct update_params        ur_params;
 162           */
 163 };
 164
 165 struct llog_update_record {
 166         struct llog_rec_hdr     lur_hdr;
 167         struct update_records   lur_update_rec;
 168         /* Note ur_update_rec has a variable size, so comment out
 169          * the following ur_tail, in case someone use it directly
 170          *
 171          * struct llog_rec_tail lur_tail;
 172          */
 173 };
 174
 175 static inline struct update_params *
 176 update_records_get_params(const struct update_records *record)
 177 {
 178         return (struct update_params *)((char *)record +
 179                 offsetof(struct update_records, ur_ops) +
 180                 update_ops_size(&record->ur_ops, record->ur_update_count));
 181 }
 182
 183 static inline size_t
 184 update_records_size(const struct update_records *record)
 185 {
 186         struct update_params *params;
 187
 188         params = update_records_get_params(record);
 189
 190         return cfs_size_round(offsetof(struct update_records, ur_ops) +
 191                update_ops_size(&record->ur_ops, record->ur_update_count) +
 192                update_params_size(params, record->ur_param_count));
 193 }
 194
 195 static inline size_t
 196 llog_update_record_size(const struct llog_update_record *lur)
 197 {
 198         return cfs_size_round(sizeof(lur->lur_hdr) +
 199                               update_records_size(&lur->lur_update_rec) +
 200                               sizeof(struct llog_rec_tail));
 201 }
 202
 203 static inline struct update_op *
 204 update_ops_get_op(const struct update_ops *ops, unsigned int index,
 205                   unsigned int update_count)
 206 {
 207         struct update_op *op;
 208         unsigned int i;
 209
 210         if (index > update_count)
 211                 return NULL;
 212
 213         op = (struct update_op *)&ops->uops_op[0];
 214         for (i = 0; i < index; i++)
 215                 op = update_op_next_op(op);
 216
 217         return op;
 218 }
 219
 220 static inline void
 221 *object_update_param_get(const struct object_update *update, size_t index,
 222                          size_t *size)
 223 {
 224         const struct    object_update_param *param;
 225         size_t          i;
 226
 227         if (index >= update->ou_params_count)
 228                 return ERR_PTR(-EINVAL);
 229
 230         param = &update->ou_params[0];
 231         for (i = 0; i < index; i++)
 232                 param = (struct object_update_param *)((char *)param +
 233                         object_update_param_size(param));
 234
 235         if (size != NULL)
 236                 *size = param->oup_len;
 237
 238         if (param->oup_len == 0)
 239                 return NULL;
 240
 241         return (void *)&param->oup_buf[0];
 242 }
 243
 244 static inline unsigned long
 245 object_update_request_size(const struct object_update_request *our)
 246 {
 247         unsigned long   size;
 248         size_t          i = 0;
 249
 250         size = offsetof(struct object_update_request, ourq_updates[0]);
 251         for (i = 0; i < our->ourq_count; i++) {
 252                 struct object_update *update;
 253
 254                 update = (struct object_update *)((char *)our + size);
 255                 size += object_update_size(update);
 256         }
 257         return size;
 258 }
 259
 260 static inline void
 261 object_update_result_insert(struct object_update_reply *reply,
 262                             void *data, size_t data_len, size_t index,
 263                             int rc)
 264 {
 265         struct object_update_result *update_result;
 266         char *ptr;
 267
 268         update_result = object_update_result_get(reply, index, NULL);
 269         LASSERT(update_result != NULL);
 270
 271         update_result->our_rc = ptlrpc_status_hton(rc);
 272         if (data_len > 0) {
 273                 LASSERT(data != NULL);
 274                 ptr = (char *)update_result +
 275                         cfs_size_round(sizeof(struct object_update_reply));
 276                 update_result->our_datalen = data_len;
 277                 memcpy(ptr, data, data_len);
 278         }
 279
 280         reply->ourp_lens[index] = cfs_size_round(data_len +
 281                                         sizeof(struct object_update_result));
 282 }
 283
 284 static inline int
 285 object_update_result_data_get(const struct object_update_reply *reply,
 286                               struct lu_buf *lbuf, size_t index)
 287 {
 288         struct object_update_result *update_result;
 289         size_t size = 0;
 290         int    result;
 291
 292         LASSERT(lbuf != NULL);
 293         update_result = object_update_result_get(reply, index, &size);
 294         if (update_result == NULL ||
 295             size < cfs_size_round(sizeof(struct object_update_reply)) ||
 296             update_result->our_datalen > size)
 297                 RETURN(-EFAULT);
 298
 299         result = ptlrpc_status_ntoh(update_result->our_rc);
 300         if (result < 0)
 301                 return result;
 302
 303         lbuf->lb_buf = update_result->our_data;
 304         lbuf->lb_len = update_result->our_datalen;
 305
 306         return 0;
 307 }
 308
 309 /**
 310  * Attached in the thandle to record the updates for distribute
 311  * distribution.
 312  */
 313 struct thandle_update_records {
 314         /* All of updates for the cross-MDT operation. */
 315         struct llog_update_record       *tur_update_records;
 316         size_t                          tur_update_records_buf_size;
 317
 318         /* All of parameters for the cross-MDT operation */
 319         struct update_params    *tur_update_params;
 320         unsigned int            tur_update_param_count;
 321         size_t                  tur_update_params_buf_size;
 322 };
 323
 324 #define TOP_THANDLE_MAGIC       0x20140917
 325 struct top_multiple_thandle {
 326         struct dt_device        *tmt_master_sub_dt;
 327         atomic_t                tmt_refcount;
 328         /* Other sub transactions will be listed here. */
 329         struct list_head        tmt_sub_thandle_list;
 330
 331         struct list_head        tmt_commit_list;
 332         /* All of update records will packed here */
 333         struct thandle_update_records *tmt_update_records;
 334
 335         wait_queue_head_t       tmt_stop_waitq;
 336         __u64                   tmt_batchid;
 337         int                     tmt_result;
 338         __u32                   tmt_magic;
 339         __u32                   tmt_committed:1;
 340 };
 341
 342 /* {top,sub}_thandle are used to manage distributed transactions which
 343  * include updates on several nodes. A top_handle represents the
 344  * whole operation, and sub_thandle represents updates on each node. */
 345 struct top_thandle {
 346         struct thandle          tt_super;
 347         /* The master sub transaction. */
 348         struct thandle          *tt_master_sub_thandle;
 349
 350         struct top_multiple_thandle *tt_multiple_thandle;
 351 };
 352
 353 /* Sub thandle is used to track multiple sub thandles under one parent
 354  * thandle */
 355 struct sub_thandle {
 356         struct thandle          *st_sub_th;
 357         struct dt_device        *st_dt;
 358         struct llog_cookie      st_cookie;
 359         struct dt_txn_commit_cb st_commit_dcb;
 360         struct dt_txn_commit_cb st_stop_dcb;
 361         int                     st_result;
 362
 363         /* linked to top_thandle */
 364         struct list_head        st_sub_list;
 365
 366         /* If this sub thandle is committed */
 367         bool                    st_committed:1,
 368                                 st_stopped:1;
 369 };
 370
 371 struct tx_arg;
 372 typedef int (*tx_exec_func_t)(const struct lu_env *env, struct thandle *th,
 373                               struct tx_arg *ta);
 374
 375 /* Structure for holding one update execution */
 376 struct tx_arg {
 377         tx_exec_func_t           exec_fn;
 378         tx_exec_func_t           undo_fn;
 379         struct dt_object        *object;
 380         const char              *file;
 381         struct object_update_reply *reply;
 382         int                      line;
 383         int                      index;
 384         union {
 385                 struct {
 386                         struct dt_insert_rec     rec;
 387                         const struct dt_key     *key;
 388                 } insert;
 389                 struct {
 390                 } ref;
 391                 struct {
 392                         struct lu_attr   attr;
 393                 } attr_set;
 394                 struct {
 395                         struct lu_buf    buf;
 396                         const char      *name;
 397                         int              flags;
 398                         __u32            csum;
 399                 } xattr_set;
 400                 struct {
 401                         struct lu_attr                  attr;
 402                         struct dt_allocation_hint       hint;
 403                         struct dt_object_format         dof;
 404                         struct lu_fid                   fid;
 405                 } create;
 406                 struct {
 407                         struct lu_buf   buf;
 408                         loff_t          pos;
 409                 } write;
 410                 struct {
 411                         struct ost_body     *body;
 412                 } destroy;
 413         } u;
 414 };
 415
 416 /* Structure for holding all update executations of one transaction */
 417 struct thandle_exec_args {
 418         struct thandle          *ta_handle;
 419         int                     ta_argno;   /* used args */
 420         int                     ta_alloc_args; /* allocated args count */
 421         struct tx_arg           **ta_args;
 422 };
 423
 424 /* target/out_lib.c */
 425 int out_update_pack(const struct lu_env *env, struct object_update *update,
 426                     size_t *max_update_size, enum update_type op,
 427                     const struct lu_fid *fid, unsigned int params_count,
 428                     __u16 *param_sizes, const void **param_bufs);
 429 int out_create_pack(const struct lu_env *env, struct object_update *update,
 430                     size_t *max_update_size, const struct lu_fid *fid,
 431                     const struct lu_attr *attr, struct dt_allocation_hint *hint,
 432                     struct dt_object_format *dof);
 433 int out_object_destroy_pack(const struct lu_env *env,
 434                             struct object_update *update,
 435                             size_t *max_update_size,
 436                             const struct lu_fid *fid);
 437 int out_index_delete_pack(const struct lu_env *env,
 438                           struct object_update *update, size_t *max_update_size,
 439                           const struct lu_fid *fid, const struct dt_key *key);
 440 int out_index_insert_pack(const struct lu_env *env,
 441                           struct object_update *update, size_t *max_update_size,
 442                           const struct lu_fid *fid, const struct dt_rec *rec,
 443                           const struct dt_key *key);
 444 int out_xattr_set_pack(const struct lu_env *env,
 445                        struct object_update *update, size_t *max_update_size,
 446                        const struct lu_fid *fid, const struct lu_buf *buf,
 447                        const char *name, __u32 flag);
 448 int out_xattr_del_pack(const struct lu_env *env,
 449                        struct object_update *update, size_t *max_update_size,
 450                        const struct lu_fid *fid, const char *name);
 451 int out_attr_set_pack(const struct lu_env *env,
 452                       struct object_update *update, size_t *max_update_size,
 453                       const struct lu_fid *fid, const struct lu_attr *attr);
 454 int out_ref_add_pack(const struct lu_env *env,
 455                      struct object_update *update, size_t *max_update_size,
 456                      const struct lu_fid *fid);
 457 int out_ref_del_pack(const struct lu_env *env,
 458                      struct object_update *update, size_t *max_update_size,
 459                      const struct lu_fid *fid);
 460 int out_write_pack(const struct lu_env *env,
 461                    struct object_update *update, size_t *max_update_size,
 462                    const struct lu_fid *fid, const struct lu_buf *buf,
 463                    __u64 pos);
 464 int out_attr_get_pack(const struct lu_env *env,
 465                       struct object_update *update, size_t *max_update_size,
 466                       const struct lu_fid *fid);
 467 int out_index_lookup_pack(const struct lu_env *env,
 468                           struct object_update *update, size_t *max_update_size,
 469                           const struct lu_fid *fid, struct dt_rec *rec,
 470                           const struct dt_key *key);
 471 int out_xattr_get_pack(const struct lu_env *env,
 472                        struct object_update *update, size_t *max_update_size,
 473                        const struct lu_fid *fid, const char *name);
 474 int out_read_pack(const struct lu_env *env, struct object_update *update,
 475                   size_t *max_update_length, const struct lu_fid *fid,
 476                   size_t size, loff_t pos);
 477
 478 const char *update_op_str(__u16 opcode);
 479
 480 /* target/update_trans.c */
 481 struct thandle *thandle_get_sub_by_dt(const struct lu_env *env,
 482                                       struct thandle *th,
 483                                       struct dt_device *sub_dt);
 484
 485 static inline struct thandle *
 486 thandle_get_sub(const struct lu_env *env, struct thandle *th,
 487                  const struct dt_object *sub_obj)
 488 {
 489         return thandle_get_sub_by_dt(env, th, lu2dt_dev(sub_obj->do_lu.lo_dev));
 490 }
 491
 492 struct thandle *
 493 top_trans_create(const struct lu_env *env, struct dt_device *master_dev);
 494 int top_trans_start(const struct lu_env *env, struct dt_device *master_dev,
 495                     struct thandle *th);
 496 int top_trans_stop(const struct lu_env *env, struct dt_device *master_dev,
 497                    struct thandle *th);
 498 void top_multiple_thandle_destroy(struct top_multiple_thandle *tmt);
 499
 500 static inline void top_multiple_thandle_get(struct top_multiple_thandle *tmt)
 501 {
 502         atomic_inc(&tmt->tmt_refcount);
 503 }
 504
 505 static inline void top_multiple_thandle_put(struct top_multiple_thandle *tmt)
 506 {
 507         if (atomic_dec_and_test(&tmt->tmt_refcount))
 508                 top_multiple_thandle_destroy(tmt);
 509 }
 510
 511 struct sub_thandle *lookup_sub_thandle(struct top_multiple_thandle *tmt,
 512                                        struct dt_device *dt_dev);
 513 int sub_thandle_trans_create(const struct lu_env *env,
 514                              struct top_thandle *top_th,
 515                              struct sub_thandle *st);
 516
 517 /* update_records.c */
 518 int update_records_create_pack(const struct lu_env *env,
 519                                struct update_ops *ops,
 520                                unsigned int *op_count,
 521                                size_t *max_ops_size,
 522                                struct update_params *params,
 523                                unsigned int *param_count,
 524                                size_t *max_param_size,
 525                                const struct lu_fid *fid,
 526                                const struct lu_attr *attr,
 527                                const struct dt_allocation_hint *hint,
 528                                struct dt_object_format *dof);
 529 int update_records_attr_set_pack(const struct lu_env *env,
 530                                  struct update_ops *ops,
 531                                  unsigned int *op_count,
 532                                  size_t *max_ops_size,
 533                                  struct update_params *params,
 534                                  unsigned int *param_count,
 535                                  size_t *max_param_size,
 536                                  const struct lu_fid *fid,
 537                                  const struct lu_attr *attr);
 538 int update_records_ref_add_pack(const struct lu_env *env,
 539                                 struct update_ops *ops,
 540                                 unsigned int *op_count,
 541                                 size_t *max_ops_size,
 542                                 struct update_params *params,
 543                                 unsigned int *param_count,
 544                                 size_t *max_param_size,
 545                                 const struct lu_fid *fid);
 546 int update_records_ref_del_pack(const struct lu_env *env,
 547                                 struct update_ops *ops,
 548                                 unsigned int *op_count,
 549                                 size_t *max_ops_size,
 550                                 struct update_params *params,
 551                                 unsigned int *param_count,
 552                                 size_t *max_param_size,
 553                                 const struct lu_fid *fid);
 554 int update_records_object_destroy_pack(const struct lu_env *env,
 555                                        struct update_ops *ops,
 556                                        unsigned int *op_count,
 557                                        size_t *max_ops_size,
 558                                        struct update_params *params,
 559                                        unsigned int *param_count,
 560                                        size_t *max_param_size,
 561                                        const struct lu_fid *fid);
 562 int update_records_index_insert_pack(const struct lu_env *env,
 563                                      struct update_ops *ops,
 564                                      unsigned int *op_count,
 565                                      size_t *max_ops_size,
 566                                      struct update_params *params,
 567                                      unsigned int *param_count,
 568                                      size_t *max_param_size,
 569                                      const struct lu_fid *fid,
 570                                      const struct dt_rec *rec,
 571                                      const struct dt_key *key);
 572 int update_records_index_delete_pack(const struct lu_env *env,
 573                                      struct update_ops *ops,
 574                                      unsigned int *op_count,
 575                                      size_t *max_ops_size,
 576                                      struct update_params *params,
 577                                      unsigned int *param_count,
 578                                      size_t *max_param_size,
 579                                      const struct lu_fid *fid,
 580                                      const struct dt_key *key);
 581 int update_records_xattr_set_pack(const struct lu_env *env,
 582                                   struct update_ops *ops,
 583                                   unsigned int *op_count,
 584                                   size_t *max_ops_size,
 585                                   struct update_params *params,
 586                                   unsigned int *param_count,
 587                                   size_t *max_param_size,
 588                                   const struct lu_fid *fid,
 589                                   const struct lu_buf *buf, const char *name,
 590                                   __u32 flag);
 591 int update_records_xattr_del_pack(const struct lu_env *env,
 592                                   struct update_ops *ops,
 593                                   unsigned int *op_count,
 594                                   size_t *max_ops_size,
 595                                   struct update_params *params,
 596                                   unsigned int *param_count,
 597                                   size_t *max_param_size,
 598                                   const struct lu_fid *fid,
 599                                   const char *name);
 600 int update_records_write_pack(const struct lu_env *env,
 601                               struct update_ops *ops,
 602                               unsigned int *op_count,
 603                               size_t *max_ops_size,
 604                               struct update_params *params,
 605                               unsigned int *param_count,
 606                               size_t *max_param_size,
 607                               const struct lu_fid *fid,
 608                               const struct lu_buf *buf,
 609                               __u64 pos);
 610 int update_records_punch_pack(const struct lu_env *env,
 611                               struct update_ops *ops,
 612                               unsigned int *op_count,
 613                               size_t *max_ops_size,
 614                               struct update_params *params,
 615                               unsigned int *param_count,
 616                               size_t *max_param_size,
 617                               const struct lu_fid *fid,
 618                               __u64 start, __u64 end);
 619
 620 int tur_update_records_extend(struct thandle_update_records *tur,
 621                               size_t new_size);
 622 int tur_update_params_extend(struct thandle_update_records *tur,
 623                              size_t new_size);
 624 int tur_update_extend(struct thandle_update_records *tur,
 625                       size_t new_op_size, size_t new_param_size);
 626
 627 #define update_record_pack(name, th, ...)                               \
 628 ({                                                                      \
 629         struct top_thandle *top_th;                                     \
 630         struct top_multiple_thandle *tmt;                               \
 631         struct thandle_update_records *tur;                             \
 632         struct llog_update_record     *lur;                             \
 633         size_t          avail_param_size;                               \
 634         size_t          avail_op_size;                                  \
 635         int             ret;                                            \
 636                                                                         \
 637         while (1) {                                                     \
 638                 top_th = container_of(th, struct top_thandle, tt_super);\
 639                 tmt = top_th->tt_multiple_thandle;                      \
 640                 tur = tmt->tmt_update_records;                          \
 641                 lur = tur->tur_update_records;                          \
 642                 avail_param_size = tur->tur_update_params_buf_size -    \
 643                              update_params_size(tur->tur_update_params, \
 644                                         tur->tur_update_param_count);   \
 645                 avail_op_size = tur->tur_update_records_buf_size -      \
 646                                 llog_update_record_size(lur);           \
 647                 ret = update_records_##name##_pack(env,                 \
 648                                           &lur->lur_update_rec.ur_ops,  \
 649                                   &lur->lur_update_rec.ur_update_count, \
 650                                   &avail_op_size,                       \
 651                                   tur->tur_update_params,               \
 652                                   &tur->tur_update_param_count,         \
 653                                   &avail_param_size, __VA_ARGS__);      \
 654                 if (ret == -E2BIG) {                                    \
 655                         ret = tur_update_extend(tur, avail_op_size,     \
 656                                                    avail_param_size);   \
 657                         if (ret != 0)                                   \
 658                                 break;                                  \
 659                         continue;                                       \
 660                 } else {                                                \
 661                         break;                                          \
 662                 }                                                       \
 663         }                                                               \
 664         ret;                                                            \
 665 })
 666 #endif