HelenOS sources

extver_ext2       215 uspace/app/mkext4/mkext4.c 		*ver = extver_ext2;
extver_ext2        47 uspace/lib/ext4/include/ext4/cfg.h #define ext4_def_fs_version extver_ext2
extver_ext2      1619 uspace/lib/ext4/src/superblock.c 	if (cfg->version >= extver_ext2)
extver_ext2      1626 uspace/lib/ext4/src/superblock.c 	if (cfg->version >= extver_ext2) {