MEMORY_SUPERBLOCK_MAGIC 1810 drivers/md/dm-writecache.c 	pmem_assign(sb(wc)->magic, cpu_to_le32(MEMORY_SUPERBLOCK_MAGIC));
MEMORY_SUPERBLOCK_MAGIC 2190 drivers/md/dm-writecache.c 	if (le32_to_cpu(s.magic) != MEMORY_SUPERBLOCK_MAGIC) {