42 	if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) ||  in ext2fs_descriptor_block_loc2()
43 	    (i < fs->super->s_first_meta_bg))  in ext2fs_descriptor_block_loc2()
46 	bg = EXT2_DESC_PER_BLOCK(fs->super) * i;  in ext2fs_descriptor_block_loc2()
58 	if (group_block != fs->super->s_first_data_block &&  in ext2fs_descriptor_block_loc2()
59 	    ((ret_blk + fs->super->s_blocks_per_group) <  in ext2fs_descriptor_block_loc2()
60 	     ext2fs_blocks_count(fs->super)))  in ext2fs_descriptor_block_loc2()
61 		ret_blk += fs->super->s_blocks_per_group;  in ext2fs_descriptor_block_loc2()
147 	retval = io_channel_alloc_buf(fs->io, -SUPERBLOCK_SIZE, &fs->super);  in ext2fs_open2()
192 				     fs->super);  in ext2fs_open2()
196 		memcpy(fs->orig_super, fs->super, SUPERBLOCK_SIZE);  in ext2fs_open2()
200 	ext2fs_swap_super(fs->super);  in ext2fs_open2()
208 	if (fs->super->s_magic != EXT2_SUPER_MAGIC) {  in ext2fs_open2()
212 	if (fs->super->s_rev_level > EXT2_LIB_CURRENT_REV) {  in ext2fs_open2()
221 		features = fs->super->s_feature_incompat;  in ext2fs_open2()
231 		features = fs->super->s_feature_ro_compat;  in ext2fs_open2()
243 		    (fs->super->s_feature_incompat &  in ext2fs_open2()
250 	if ((fs->super->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) >  in ext2fs_open2()
260 	if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,  in ext2fs_open2()
267 	if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,  in ext2fs_open2()
269 	    (fs->super->s_log_block_size != fs->super->s_log_cluster_size)) {  in ext2fs_open2()
273 	fs->fragsize = fs->blocksize = EXT2_BLOCK_SIZE(fs->super);  in ext2fs_open2()
274 	if (EXT2_INODE_SIZE(fs->super) < EXT2_GOOD_OLD_INODE_SIZE) {  in ext2fs_open2()
278 	fs->cluster_ratio_bits = fs->super->s_log_cluster_size -  in ext2fs_open2()
279 		fs->super->s_log_block_size;  in ext2fs_open2()
280 	if (EXT2_BLOCKS_PER_GROUP(fs->super) !=  in ext2fs_open2()
281 	    EXT2_CLUSTERS_PER_GROUP(fs->super) << fs->cluster_ratio_bits) {  in ext2fs_open2()
285 	fs->inode_blocks_per_group = ((EXT2_INODES_PER_GROUP(fs->super) *  in ext2fs_open2()
286 				       EXT2_INODE_SIZE(fs->super) +  in ext2fs_open2()
287 				       EXT2_BLOCK_SIZE(fs->super) - 1) /  in ext2fs_open2()
288 				      EXT2_BLOCK_SIZE(fs->super));  in ext2fs_open2()
304 	if (fs->super->s_feature_incompat &  in ext2fs_open2()
311 	if (EXT2_INODES_PER_GROUP(fs->super) == 0) {  in ext2fs_open2()
319 	blocks_per_group = EXT2_BLOCKS_PER_GROUP(fs->super);  in ext2fs_open2()
321 	    blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) ||  in ext2fs_open2()
322 	    fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super) ||  in ext2fs_open2()
323            EXT2_DESC_PER_BLOCK(fs->super) == 0 ||  in ext2fs_open2()
324            fs->super->s_first_data_block >= ext2fs_blocks_count(fs->super)) {  in ext2fs_open2()
328 	fs->group_desc_count = ext2fs_div64_ceil(ext2fs_blocks_count(fs->super) -  in ext2fs_open2()
329 						 fs->super->s_first_data_block,  in ext2fs_open2()
331 	if (fs->group_desc_count * EXT2_INODES_PER_GROUP(fs->super) !=  in ext2fs_open2()
332 	    fs->super->s_inodes_count) {  in ext2fs_open2()
337 					  EXT2_DESC_PER_BLOCK(fs->super));  in ext2fs_open2()
343 		group_block = fs->super->s_first_data_block;  in ext2fs_open2()
348 	groups_per_block = EXT2_DESC_PER_BLOCK(fs->super);  in ext2fs_open2()
350 	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)  in ext2fs_open2()
351 		first_meta_bg = fs->super->s_first_meta_bg;  in ext2fs_open2()
383 	fs->stride = fs->super->s_raid_stride;  in ext2fs_open2()
389 	if (superblock > 1 && EXT2_HAS_RO_COMPAT_FEATURE(fs->super,  in ext2fs_open2()
405 	if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&  in ext2fs_open2()