HelenOS sources

MFS_SUPERBLOCK_SIZE  571 uspace/app/mkmfs/mkmfs.c 	sb = malloc(MFS_SUPERBLOCK_SIZE);
MFS_SUPERBLOCK_SIZE  604 uspace/app/mkmfs/mkmfs.c 	sb = malloc(MFS_SUPERBLOCK_SIZE);
MFS_SUPERBLOCK_SIZE  162 uspace/srv/fs/mfs/mfs_ops.c 	sb = malloc(MFS_SUPERBLOCK_SIZE);
HelenOS homepage, sources at GitHub