MD_SB_GENERIC_CONSTANT_WORDS   63 include/linux/raid/md_p.h #define MD_SB_GENERIC_WORDS		(MD_SB_GENERIC_CONSTANT_WORDS + MD_SB_GENERIC_STATE_WORDS)
MD_SB_GENERIC_CONSTANT_WORDS  134 include/linux/raid/md_p.h 	__u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16];