390   MI_BLOCK_INFO block_info;  in _mi_find_writepos()  local
399     block_info.second_read=0;  in _mi_find_writepos()
401     if (!(_mi_get_block_info(&block_info,info->dfile,info->s->state.dellink) &  in _mi_find_writepos()
408     info->s->state.dellink=block_info.next_filepos;  in _mi_find_writepos()
410     info->state->empty-= block_info.block_len;  in _mi_find_writepos()
411     *length= block_info.block_len;  in _mi_find_writepos()
447 static my_bool unlink_deleted_block(MI_INFO *info, MI_BLOCK_INFO *block_info)  in unlink_deleted_block()  argument
450   if (block_info->filepos == info->s->state.dellink)  in unlink_deleted_block()
453     info->s->state.dellink=block_info->next_filepos;  in unlink_deleted_block()
460     if (!(_mi_get_block_info(&tmp,info->dfile,block_info->prev_filepos)  in unlink_deleted_block()
463     mi_sizestore(tmp.header+4,block_info->next_filepos);  in unlink_deleted_block()
465 		  block_info->prev_filepos+4, MYF(MY_NABP)))  in unlink_deleted_block()
468     if (block_info->next_filepos != HA_OFFSET_ERROR)  in unlink_deleted_block()
470       if (!(_mi_get_block_info(&tmp,info->dfile,block_info->next_filepos)  in unlink_deleted_block()
473       mi_sizestore(tmp.header+12,block_info->prev_filepos);  in unlink_deleted_block()
475 		    block_info->next_filepos+12,  in unlink_deleted_block()
482   info->state->empty-= block_info->block_len;  in unlink_deleted_block()
490   if (info->nextpos == block_info->filepos)  in unlink_deleted_block()
491     info->nextpos+=block_info->block_len;  in unlink_deleted_block()
514   MI_BLOCK_INFO block_info;  in update_backward_delete_link()  local
519     block_info.second_read=0;  in update_backward_delete_link()
520     if (_mi_get_block_info(&block_info,info->dfile,delete_block)  in update_backward_delete_link()
544   MI_BLOCK_INFO block_info,del_block;  in delete_dynamic_record()  local
552   block_info.second_read=second_read;  in delete_dynamic_record()
556     if ((b_type=_mi_get_block_info(&block_info,info->dfile,filepos))  in delete_dynamic_record()
559 	(length=(uint) (block_info.filepos-filepos) +block_info.block_len) <  in delete_dynamic_record()
576     block_info.header[0]=0;  in delete_dynamic_record()
577     mi_int3store(block_info.header+1,length);  in delete_dynamic_record()
578     mi_sizestore(block_info.header+4,info->s->state.dellink);  in delete_dynamic_record()
580       bfill(block_info.header+12,8,255);  in delete_dynamic_record()
582       mi_sizestore(block_info.header+12,block_info.next_filepos);  in delete_dynamic_record()
583     if (info->s->file_write(info,(uchar*) block_info.header,20,filepos,  in delete_dynamic_record()
589     filepos=block_info.next_filepos;  in delete_dynamic_record()
798   MI_BLOCK_INFO block_info;  in update_dynamic_record()  local
801   flag=block_info.second_read=0;  in update_dynamic_record()
822     if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
834     if (block_info.rec_len < reclength)  in update_dynamic_record()
838           reclength - block_info.rec_len + MI_MAX_DYN_BLOCK_HEADER)  in update_dynamic_record()
844     block_info.second_read=0;  in update_dynamic_record()
851       block_info.next_filepos= HA_OFFSET_ERROR;  in update_dynamic_record()
852       if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))  in update_dynamic_record()
861       length=(ulong) (block_info.filepos-filepos) + block_info.block_len;  in update_dynamic_record()
869 	if (block_info.filepos + block_info.block_len ==  in update_dynamic_record()
894 				 block_info.filepos + block_info.block_len) &  in update_dynamic_record()
939     if (_mi_write_part_record(info,filepos,length,block_info.next_filepos,  in update_dynamic_record()
942     if ((filepos=block_info.next_filepos) == HA_OFFSET_ERROR)  in update_dynamic_record()
949   if (block_info.next_filepos != HA_OFFSET_ERROR)  in update_dynamic_record()
957     if (delete_dynamic_record(info,block_info.next_filepos,1))  in update_dynamic_record()
1446   MI_BLOCK_INFO block_info;  in _mi_read_dynamic_record()  local
1454     block_info.second_read= 0;  in _mi_read_dynamic_record()
1465       if ((b_type= _mi_get_block_info(&block_info, file, filepos))  in _mi_read_dynamic_record()
1475 	if (block_info.rec_len > (uint) info->s->base.max_pack_length)  in _mi_read_dynamic_record()
1479 	  if (!(to=mi_alloc_rec_buff(info, block_info.rec_len,  in _mi_read_dynamic_record()
1485 	left_length=block_info.rec_len;  in _mi_read_dynamic_record()
1487       if (left_length < block_info.data_len || ! block_info.data_len)  in _mi_read_dynamic_record()
1491         uint offset= (uint) (block_info.filepos - filepos);  in _mi_read_dynamic_record()
1492         uint prefetch_len= (sizeof(block_info.header) - offset);  in _mi_read_dynamic_record()
1493         filepos+= sizeof(block_info.header);  in _mi_read_dynamic_record()
1495         if (prefetch_len > block_info.data_len)  in _mi_read_dynamic_record()
1496           prefetch_len= block_info.data_len;  in _mi_read_dynamic_record()
1499           memcpy((uchar*) to, block_info.header + offset, prefetch_len);  in _mi_read_dynamic_record()
1500           block_info.data_len-= prefetch_len;  in _mi_read_dynamic_record()
1506       if (block_info.data_len)  in _mi_read_dynamic_record()
1509             info->rec_cache.pos_in_file < filepos + block_info.data_len &&  in _mi_read_dynamic_record()
1517         if (info->s->file_read(info, (uchar*) to, block_info.data_len,  in _mi_read_dynamic_record()
1520         left_length-=block_info.data_len;  in _mi_read_dynamic_record()
1521         to+=block_info.data_len;  in _mi_read_dynamic_record()
1523       filepos= block_info.next_filepos;  in _mi_read_dynamic_record()
1528     DBUG_RETURN(_mi_rec_unpack(info,buf,info->rec_buff,block_info.rec_len) !=  in _mi_read_dynamic_record()
1577   MI_BLOCK_INFO block_info;  in _mi_cmp_dynamic_record()  local
1603     flag=block_info.second_read=0;  in _mi_cmp_dynamic_record()
1604     block_info.next_filepos=filepos;  in _mi_cmp_dynamic_record()
1607       if ((b_type=_mi_get_block_info(&block_info,info->dfile,  in _mi_cmp_dynamic_record()
1608 				    block_info.next_filepos))  in _mi_cmp_dynamic_record()
1619 	if (reclength != block_info.rec_len)  in _mi_cmp_dynamic_record()
1624       } else if (reclength < block_info.data_len)  in _mi_cmp_dynamic_record()
1629       reclength-=block_info.data_len;  in _mi_cmp_dynamic_record()
1630       if (_mi_cmp_buffer(info->dfile,record,block_info.filepos,  in _mi_cmp_dynamic_record()
1631 			 block_info.data_len))  in _mi_cmp_dynamic_record()
1637       record+=block_info.data_len;  in _mi_cmp_dynamic_record()
1718   MI_BLOCK_INFO block_info;  in _mi_read_rnd_dynamic_record()  local
1741   block_info.second_read= 0;  in _mi_read_rnd_dynamic_record()
1762       if (_mi_read_cache(&info->rec_cache,(uchar*) block_info.header,filepos,  in _mi_read_rnd_dynamic_record()
1763 			 sizeof(block_info.header),  in _mi_read_rnd_dynamic_record()
1767       b_type=_mi_get_block_info(&block_info,-1,filepos);  in _mi_read_rnd_dynamic_record()
1776       b_type=_mi_get_block_info(&block_info,info->dfile,filepos);  in _mi_read_rnd_dynamic_record()
1785 	filepos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1786 	block_info.second_read=0;  in _mi_read_rnd_dynamic_record()
1792 	info->lastpos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1793 	info->nextpos=block_info.filepos+block_info.block_len;  in _mi_read_rnd_dynamic_record()
1799       if (block_info.rec_len > (uint) share->base.max_pack_length)  in _mi_read_rnd_dynamic_record()
1804 	if (!(to= mi_alloc_rec_buff(info, block_info.rec_len,  in _mi_read_rnd_dynamic_record()
1810       left_len=block_info.rec_len;  in _mi_read_rnd_dynamic_record()
1812     if (left_len < block_info.data_len)  in _mi_read_rnd_dynamic_record()
1817       uint offset=(uint) (block_info.filepos - filepos);  in _mi_read_rnd_dynamic_record()
1818       uint tmp_length= (sizeof(block_info.header) - offset);  in _mi_read_rnd_dynamic_record()
1819       filepos=block_info.filepos;  in _mi_read_rnd_dynamic_record()
1821       if (tmp_length > block_info.data_len)  in _mi_read_rnd_dynamic_record()
1822 	tmp_length= block_info.data_len;  in _mi_read_rnd_dynamic_record()
1825 	memcpy((uchar*) to, block_info.header+offset,tmp_length);  in _mi_read_rnd_dynamic_record()
1826 	block_info.data_len-=tmp_length;  in _mi_read_rnd_dynamic_record()
1833     if (block_info.data_len)  in _mi_read_rnd_dynamic_record()
1838 			   block_info.data_len,  in _mi_read_rnd_dynamic_record()
1847             block_info.filepos + block_info.data_len &&  in _mi_read_rnd_dynamic_record()
1851         if (mysql_file_read(info->dfile, (uchar*) to, block_info.data_len,  in _mi_read_rnd_dynamic_record()
1866       info->nextpos= block_info.filepos + block_info.block_len;  in _mi_read_rnd_dynamic_record()
1869     left_len-=block_info.data_len;  in _mi_read_rnd_dynamic_record()
1870     to+=block_info.data_len;  in _mi_read_rnd_dynamic_record()
1871     filepos=block_info.next_filepos;  in _mi_read_rnd_dynamic_record()
1876   if (_mi_rec_unpack(info,buf,info->rec_buff,block_info.rec_len) !=  in _mi_read_rnd_dynamic_record()