38 	if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) ||  in ext2fs_descriptor_block_loc()
39 	    (i < fs->super->s_first_meta_bg))  in ext2fs_descriptor_block_loc()
42 	bg = EXT2_DESC_PER_BLOCK(fs->super) * i;  in ext2fs_descriptor_block_loc()
54 	if (group_block != fs->super->s_first_data_block &&  in ext2fs_descriptor_block_loc()
55 	    ((ret_blk + fs->super->s_blocks_per_group) <  in ext2fs_descriptor_block_loc()
56 	     fs->super->s_blocks_count))  in ext2fs_descriptor_block_loc()
57 		ret_blk += fs->super->s_blocks_per_group;  in ext2fs_descriptor_block_loc()
134 	retval = ext2fs_get_memalign(SUPERBLOCK_SIZE, 512, &fs->super);  in ext2fs_open2()
179 				     fs->super);  in ext2fs_open2()
183 		memcpy(fs->orig_super, fs->super, SUPERBLOCK_SIZE);  in ext2fs_open2()
187 	ext2fs_swap_super(fs->super);  in ext2fs_open2()
195 	if (fs->super->s_magic != EXT2_SUPER_MAGIC) {  in ext2fs_open2()
199 	if (fs->super->s_rev_level > EXT2_LIB_CURRENT_REV) {  in ext2fs_open2()
208 		features = fs->super->s_feature_incompat;  in ext2fs_open2()
218 		features = fs->super->s_feature_ro_compat;  in ext2fs_open2()
230 		    (fs->super->s_feature_incompat &  in ext2fs_open2()
237 	if ((fs->super->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) >  in ext2fs_open2()
242 	fs->blocksize = EXT2_BLOCK_SIZE(fs->super);  in ext2fs_open2()
243 	if (EXT2_INODE_SIZE(fs->super) < EXT2_GOOD_OLD_INODE_SIZE) {  in ext2fs_open2()
247 	fs->fragsize = EXT2_FRAG_SIZE(fs->super);  in ext2fs_open2()
248 	fs->inode_blocks_per_group = ((EXT2_INODES_PER_GROUP(fs->super) *  in ext2fs_open2()
249 				       EXT2_INODE_SIZE(fs->super) +  in ext2fs_open2()
250 				       EXT2_BLOCK_SIZE(fs->super) - 1) /  in ext2fs_open2()
251 				      EXT2_BLOCK_SIZE(fs->super));  in ext2fs_open2()
267 	if (fs->super->s_feature_incompat &  in ext2fs_open2()
274 	if (EXT2_INODES_PER_GROUP(fs->super) == 0) {  in ext2fs_open2()
282 	blocks_per_group = EXT2_BLOCKS_PER_GROUP(fs->super);  in ext2fs_open2()
284 	    blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) ||  in ext2fs_open2()
285 	    fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super) ||  in ext2fs_open2()
286            EXT2_DESC_PER_BLOCK(fs->super) == 0 ||  in ext2fs_open2()
287            fs->super->s_first_data_block >= fs->super->s_blocks_count) {  in ext2fs_open2()
291 	fs->group_desc_count = ext2fs_div_ceil(fs->super->s_blocks_count -  in ext2fs_open2()
292 					       fs->super->s_first_data_block,  in ext2fs_open2()
294        if (fs->group_desc_count * EXT2_INODES_PER_GROUP(fs->super) !=  in ext2fs_open2()
295            fs->super->s_inodes_count) {  in ext2fs_open2()
300 					  EXT2_DESC_PER_BLOCK(fs->super));  in ext2fs_open2()
306 		group_block = fs->super->s_first_data_block;  in ext2fs_open2()
308 	groups_per_block = EXT2_DESC_PER_BLOCK(fs->super);  in ext2fs_open2()
309 	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)  in ext2fs_open2()
310 		first_meta_bg = fs->super->s_first_meta_bg;  in ext2fs_open2()
338 	fs->stride = fs->super->s_raid_stride;  in ext2fs_open2()
344 	if (superblock > 1 && EXT2_HAS_RO_COMPAT_FEATURE(fs->super,  in ext2fs_open2()