53 	befs_blocknr_t block;	/* block coresponding to pos */  in befs_read_datastream()  local
56 	block = pos >> BEFS_SB(sb)->block_shift;  in befs_read_datastream()
58 		*off = pos - (block << BEFS_SB(sb)->block_shift);  in befs_read_datastream()
60 	if (befs_fblock2brun(sb, ds, block, &run) != BEFS_OK) {  in befs_read_datastream()
61 		befs_error(sb, "BeFS: Error finding disk addr of block %lu",  in befs_read_datastream()
62 			   block);  in befs_read_datastream()
68 		befs_error(sb, "BeFS: Error reading block %lu from datastream",  in befs_read_datastream()
69 			   block);  in befs_read_datastream()
80  * Takes a file position and gives back a brun who's starting block
81  * is block number fblock of the file.
108 			   "befs_fblock2brun() was asked to find block %lu, "  in befs_fblock2brun()
136 			befs_error(sb, "BeFS: Error reading datastream block "  in befs_read_lsymlink()
178 	metablocks = 1;		/* Start with 1 block for inode */  in befs_count_blocks()
180 	/* Size of indirect block */  in befs_count_blocks()
185 	   Double indir block, plus all the indirect blocks it mapps  in befs_count_blocks()
186 	   In the double-indirect range, all block runs of data are  in befs_count_blocks()
188 	   how many data block runs are in the double-indirect region,  in befs_count_blocks()
215 	Finds the block run that starts at file block number blockno
229 	contains the blockno-th filesystem block. This is necessary
230 	because the block runs map variable amounts of data. Simply
232 	incrementing this by the length of each block run as we come
237 	When/if blockno is found, if blockno is inside of a block 
239 	of the block run, so that blockno is the start and len is
257 		befs_error(sb, "befs_find_brun_direct() passed block outside of"  in befs_find_brun_direct()
281 	Finds the block run that starts at file block number blockno
294 	For each block in the indirect run of the datastream, read
330 				   "read disk block %lu from the indirect brun",  in befs_find_brun_indirect()
352 					   "file block %lu at indirect[%d]",  in befs_find_brun_indirect()
364 		   "file block %lu", blockno);  in befs_find_brun_indirect()
371 	Finds the block run that starts at file block number blockno
384 	The block runs in the double-indirect region are different.
386 	block run maps a constant amount of file data. This means
387 	that we can directly calculate how many block runs into the
389 	maps a particular filesystem block.
392 	inode addresses in the double-indirect block will point us
393 	to the indirect block that contains the mapping for the data,
395 	indirect block maps the data block we are after.
402 	the indirect block and perform a  similar process to find
403 	the actual block run that maps the data block we are interested
437 	 * the indirect block pointed to by the double indirect block  in befs_find_brun_dblindirect()
442 	 * the double indirect block  in befs_find_brun_dblindirect()
452 	 * the indirect block contains pos.  in befs_find_brun_dblindirect()
459 	/* Read double indirect block */  in befs_find_brun_dblindirect()
464 			   "of the double-indirect block", dblindir_indx);  in befs_find_brun_dblindirect()
473 			   "double-indirect block at blockno %lu",  in befs_find_brun_dblindirect()
488 	/* Read indirect block */  in befs_find_brun_dblindirect()
493 			   "of the indirect block", indir_indx);  in befs_find_brun_dblindirect()
501 			   "indirect block at blockno %lu",  in befs_find_brun_dblindirect()
521 	befs_debug(sb, "Found file block %lu in double_indirect[%d][%d],"  in befs_find_brun_dblindirect()