68 static int lookup_zone(const struct adfs_discmap *dm, const unsigned int idlen,  in lookup_zone()  argument
71 	const unsigned int endbit = dm->dm_endbit;  in lookup_zone()
73 	unsigned char *map = dm->dm_bh->b_data;  in lookup_zone()
74 	unsigned int start = dm->dm_startbit;  in lookup_zone()
115 scan_free_map(struct adfs_sb_info *asb, struct adfs_discmap *dm)  in scan_free_map()  argument
117 	const unsigned int endbit = dm->dm_endbit;  in scan_free_map()
121 	unsigned char *map = dm->dm_bh->b_data;  in scan_free_map()
163 	struct adfs_discmap *dm, *dm_end;  in scan_map()  local
166 	dm	= asb->s_map + zone;  in scan_map()
171 		result = lookup_zone(dm, idlen, frag_id, &mapoff);  in scan_map()
176 		dm ++;  in scan_map()
177 		if (dm == dm_end)  in scan_map()
178 			dm = asb->s_map;  in scan_map()
183 	result -= dm->dm_startbit;  in scan_map()
184 	result += dm->dm_startblk;  in scan_map()
200 	struct adfs_discmap *dm;  in adfs_map_statfs()  local
204 	dm   = asb->s_map;  in adfs_map_statfs()
208 		total += scan_free_map(asb, dm++);  in adfs_map_statfs()
284 static int adfs_checkmap(struct super_block *sb, struct adfs_discmap *dm)  in adfs_checkmap()  argument
292 		map = dm[i].dm_bh->b_data;  in adfs_checkmap()
309 static void adfs_map_layout(struct adfs_discmap *dm, unsigned int nzones,  in adfs_map_layout()  argument
317 	dm[0].dm_bh       = NULL;  in adfs_map_layout()
318 	dm[0].dm_startblk = 0;  in adfs_map_layout()
319 	dm[0].dm_startbit = 32 + ADFS_DR_SIZE_BITS;  in adfs_map_layout()
320 	dm[0].dm_endbit   = 32 + zone_size;  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()
331 	dm[nzones - 1].dm_endbit = 32 + size;  in adfs_map_layout()
334 static int adfs_map_read(struct adfs_discmap *dm, struct super_block *sb,  in adfs_map_read()  argument
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()
348 static void adfs_map_relse(struct adfs_discmap *dm, unsigned int nzones)  in adfs_map_relse()  argument
353 		brelse(dm[zone].dm_bh);  in adfs_map_relse()
359 	struct adfs_discmap *dm;  in adfs_read_map()  local
376 	dm = kmalloc_array(nzones, sizeof(*dm), GFP_KERNEL);  in adfs_read_map()
377 	if (dm == NULL) {  in adfs_read_map()
382 	adfs_map_layout(dm, nzones, dr);  in adfs_read_map()
384 	ret = adfs_map_read(dm, sb, map_addr, nzones);  in adfs_read_map()
390 	if (adfs_checkmap(sb, dm))  in adfs_read_map()
391 		return dm;  in adfs_read_map()
396 	adfs_map_relse(dm, nzones);  in adfs_read_map()
397 	kfree(dm);  in adfs_read_map()