HelenOS sources

EXT4_SUPERBLOCK_MAGIC 1250 uspace/lib/ext4/src/superblock.c 	if (ext4_superblock_get_magic(sb) != EXT4_SUPERBLOCK_MAGIC)
EXT4_SUPERBLOCK_MAGIC 1594 uspace/lib/ext4/src/superblock.c 	ext4_superblock_set_magic(sb, EXT4_SUPERBLOCK_MAGIC);