14  * zone which contains a bitstream made up of variable sized fragments.
30  * large or fragmented files.  The first map zone a fragment starts in
32  * from any zone on the disk.
63  * return the map bit offset of the fragment frag_id in the zone dm.
109  * Scan the free space map, for this zone, calculating the total
133 	 * exist in this zone.  in scan_free_map()
159 static int scan_map(struct adfs_sb_info *asb, unsigned int zone,  in scan_map()  argument
166 	dm	= asb->s_map + zone;  in scan_map()
167 	zone	= asb->s_map_size;  in scan_map()
168 	dm_end	= asb->s_map + zone;  in scan_map()
179 	} while (--zone > 0);  in scan_map()
202 	unsigned int zone;  in adfs_map_statfs()  local
205 	zone = asb->s_map_size;  in adfs_map_statfs()
209 	} while (--zone > 0);  in adfs_map_statfs()
220 	unsigned int zone, mapoff;  in adfs_map_lookup()  local
225 	 * disk.  The other fragments start at zone (frag / ids_per_zone)  in adfs_map_lookup()
228 		zone = asb->s_map_size >> 1;  in adfs_map_lookup()
230 		zone = frag_id / asb->s_ids_per_zone;  in adfs_map_lookup()
232 	if (zone >= asb->s_map_size)  in adfs_map_lookup()
239 	result = scan_map(asb, zone, frag_id, mapoff);  in adfs_map_lookup()
255 	adfs_error(sb, "invalid fragment 0x%04x (zone = %d, max = %d)",  in adfs_map_lookup()
256 		   frag_id, zone, asb->s_map_size);  in adfs_map_lookup()
295 			adfs_error(sb, "zone %d fails zonecheck", i);  in adfs_checkmap()
306  * Layout the map - the first zone contains a copy of the disc record,
307  * and the last zone must be limited to the size of the filesystem.
312 	unsigned int zone, zone_size;  in adfs_map_layout()  local
322 	for (zone = 1; zone < nzones; zone++) {  in adfs_map_layout()
323 		dm[zone].dm_bh       = NULL;  in adfs_map_layout()
324 		dm[zone].dm_startblk = zone * zone_size - ADFS_DR_SIZE_BITS;  in adfs_map_layout()
325 		dm[zone].dm_startbit = 32;  in adfs_map_layout()
326 		dm[zone].dm_endbit   = 32 + zone_size;  in adfs_map_layout()
337 	unsigned int zone;  in adfs_map_read()  local
339 	for (zone = 0; zone < nzones; zone++) {  in adfs_map_read()
340 		dm[zone].dm_bh = sb_bread(sb, map_addr + zone);  in adfs_map_read()
341 		if (!dm[zone].dm_bh)  in adfs_map_read()
350 	unsigned int zone;  in adfs_map_relse()  local
352 	for (zone = 0; zone < nzones; zone++)  in adfs_map_relse()
353 		brelse(dm[zone].dm_bh);  in adfs_map_relse()