HelenOS sources

ext4_superblock_get_flex_group_size  149 uspace/lib/ext4/include/ext4/superblock.h extern uint32_t ext4_superblock_get_flex_group_size(ext4_superblock_t *sb);
ext4_superblock_get_flex_group_size  266 uspace/lib/ext4/src/balloc.c 	uint32_t flex_group_size = ext4_superblock_get_flex_group_size(sb);