55 	struct ext2_super_block *sb = fs->super;  in calc_reserved_gdt_blocks()
89 	struct ext2_super_block *super;  in ext2fs_initialize()  local
135 	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super);  in ext2fs_initialize()
138 	fs->super = super;  in ext2fs_initialize()
140 	memset(super, 0, SUPERBLOCK_SIZE);  in ext2fs_initialize()
142 #define set_field(field, default) (super->field = param->field ? \  in ext2fs_initialize()
144 #define assign_field(field)	(super->field = param->field)  in ext2fs_initialize()
146 	super->s_magic = EXT2_SUPER_MAGIC;  in ext2fs_initialize()
147 	super->s_state = EXT2_VALID_FS;  in ext2fs_initialize()
155 		set_field(s_log_cluster_size, super->s_log_block_size+4);  in ext2fs_initialize()
156 		if (super->s_log_block_size > super->s_log_cluster_size) {  in ext2fs_initialize()
161 		super->s_log_cluster_size = super->s_log_block_size;  in ext2fs_initialize()
163 	set_field(s_first_data_block, super->s_log_cluster_size ? 0 : 1);  in ext2fs_initialize()
175 	if (super->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) {  in ext2fs_initialize()
179 	if (super->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {  in ext2fs_initialize()
185 	if (super->s_rev_level >= EXT2_DYNAMIC_REV) {  in ext2fs_initialize()
188 		if (super->s_inode_size >= sizeof(struct ext2_inode_large)) {  in ext2fs_initialize()
195 		super->s_first_ino = EXT2_GOOD_OLD_FIRST_INO;  in ext2fs_initialize()
196 		super->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;  in ext2fs_initialize()
200 	super->s_mkfs_time = super->s_lastcheck = fs->now ? fs->now : time(NULL);  in ext2fs_initialize()
202 	super->s_creator_os = CREATOR_OS;  in ext2fs_initialize()
204 	fs->fragsize = fs->blocksize = EXT2_BLOCK_SIZE(super);  in ext2fs_initialize()
205 	fs->cluster_ratio_bits = super->s_log_cluster_size -  in ext2fs_initialize()
206 		super->s_log_block_size;  in ext2fs_initialize()
221 			super->s_clusters_per_group =   in ext2fs_initialize()
224 		else if (super->s_log_cluster_size + 15 < 32)  in ext2fs_initialize()
225 			super->s_clusters_per_group = fs->blocksize * 8;  in ext2fs_initialize()
227 			super->s_clusters_per_group = (fs->blocksize - 1) * 8;  in ext2fs_initialize()
228 		if (super->s_clusters_per_group > EXT2_MAX_CLUSTERS_PER_GROUP(super))  in ext2fs_initialize()
229 			super->s_clusters_per_group = EXT2_MAX_CLUSTERS_PER_GROUP(super);  in ext2fs_initialize()
231 			(unsigned long long) super->s_clusters_per_group);  in ext2fs_initialize()
236 		super->s_blocks_per_group = bpg;  in ext2fs_initialize()
239 		if (super->s_blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(super))  in ext2fs_initialize()
240 			super->s_blocks_per_group = EXT2_MAX_BLOCKS_PER_GROUP(super);  in ext2fs_initialize()
241 		super->s_clusters_per_group = super->s_blocks_per_group;  in ext2fs_initialize()
244 	ext2fs_blocks_count_set(super, ext2fs_blocks_count(param) &  in ext2fs_initialize()
246 	ext2fs_r_blocks_count_set(super, ext2fs_r_blocks_count(param));  in ext2fs_initialize()
247 	if (ext2fs_r_blocks_count(super) >= ext2fs_blocks_count(param)) {  in ext2fs_initialize()
258 	if (super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {  in ext2fs_initialize()
267 		ext2fs_blocks_count(super) - super->s_first_data_block,  in ext2fs_initialize()
268 		EXT2_BLOCKS_PER_GROUP(super));  in ext2fs_initialize()
275 		  super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?  in ext2fs_initialize()
279 					  EXT2_DESC_PER_BLOCK(super));  in ext2fs_initialize()
283 	if (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT &&  in ext2fs_initialize()
284 	    (ext2fs_blocks_count(super) / i) > (1ULL << 32))  in ext2fs_initialize()
287 		set_field(s_inodes_count, ext2fs_blocks_count(super) / i);  in ext2fs_initialize()
293 	if (super->s_inodes_count < EXT2_FIRST_INODE(super)+1)  in ext2fs_initialize()
294 		super->s_inodes_count = EXT2_FIRST_INODE(super)+1;  in ext2fs_initialize()
302 	ipg = ext2fs_div_ceil(super->s_inodes_count, fs->group_desc_count);  in ext2fs_initialize()
304 		if (!bigalloc_flag && super->s_blocks_per_group >= 256) {  in ext2fs_initialize()
306 			super->s_blocks_per_group -= 8;  in ext2fs_initialize()
307 			ext2fs_blocks_count_set(super,  in ext2fs_initialize()
309 			super->s_clusters_per_group = super->s_blocks_per_group;  in ext2fs_initialize()
317 	if (ipg > (unsigned) EXT2_MAX_INODES_PER_GROUP(super))  in ext2fs_initialize()
318 		ipg = EXT2_MAX_INODES_PER_GROUP(super);  in ext2fs_initialize()
321 	super->s_inodes_per_group = ipg;  in ext2fs_initialize()
328 	fs->inode_blocks_per_group = (((super->s_inodes_per_group *  in ext2fs_initialize()
329 					EXT2_INODE_SIZE(super)) +  in ext2fs_initialize()
330 				       EXT2_BLOCK_SIZE(super) - 1) /  in ext2fs_initialize()
331 				      EXT2_BLOCK_SIZE(super));  in ext2fs_initialize()
332 	super->s_inodes_per_group = ((fs->inode_blocks_per_group *  in ext2fs_initialize()
333 				      EXT2_BLOCK_SIZE(super)) /  in ext2fs_initialize()
334 				     EXT2_INODE_SIZE(super));  in ext2fs_initialize()
340 	if (super->s_inodes_per_group < 8)  in ext2fs_initialize()
341 		super->s_inodes_per_group = 8;  in ext2fs_initialize()
342 	super->s_inodes_per_group &= ~7;  in ext2fs_initialize()
343 	fs->inode_blocks_per_group = (((super->s_inodes_per_group *  in ext2fs_initialize()
344 					EXT2_INODE_SIZE(super)) +  in ext2fs_initialize()
345 				       EXT2_BLOCK_SIZE(super) - 1) /  in ext2fs_initialize()
346 				      EXT2_BLOCK_SIZE(super));  in ext2fs_initialize()
351 	if ((__u64)super->s_inodes_per_group * fs->group_desc_count > ~0U) {  in ext2fs_initialize()
355 	super->s_inodes_count = super->s_inodes_per_group *  in ext2fs_initialize()
357 	super->s_free_inodes_count = super->s_inodes_count;  in ext2fs_initialize()
362 	if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)  in ext2fs_initialize()
367 	if (super->s_reserved_gdt_blocks > EXT2_ADDR_PER_BLOCK(super)) {  in ext2fs_initialize()
379 			  fs->desc_blocks + super->s_reserved_gdt_blocks);  in ext2fs_initialize()
382 	if (overhead > super->s_blocks_per_group) {  in ext2fs_initialize()
396 		overhead += 1 + fs->desc_blocks + super->s_reserved_gdt_blocks;  in ext2fs_initialize()
397 	rem = ((ext2fs_blocks_count(super) - super->s_first_data_block) %  in ext2fs_initialize()
398 	       super->s_blocks_per_group);  in ext2fs_initialize()
404 		ext2fs_blocks_count_set(super, ext2fs_blocks_count(super) -  in ext2fs_initialize()
412 		ext2fs_r_blocks_count_set(super, reserved_ratio *  in ext2fs_initialize()
413 			ext2fs_blocks_count(super) / 100.0);  in ext2fs_initialize()
461 	csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,  in ext2fs_initialize()
463 	reserved_inos = super->s_first_ino;  in ext2fs_initialize()
474 			numblocks = super->s_inodes_per_group;  in ext2fs_initialize()
487 		if (fs->super->s_log_groups_per_flex)  in ext2fs_initialize()
492 		ext2fs_bg_free_inodes_count_set(fs, i, fs->super->s_inodes_per_group);  in ext2fs_initialize()
497 	ext2fs_free_blocks_count_set(super, free_blocks);  in ext2fs_initialize()
501 		super->s_flags |= EXT2_FLAGS_SIGNED_HASH;  in ext2fs_initialize()
503 		super->s_flags |= EXT2_FLAGS_UNSIGNED_HASH;  in ext2fs_initialize()