BKEY_MANTISSA_BITS  240 drivers/md/bcache/bset.c #define BKEY_MANTISSA_MASK	((1 << BKEY_MANTISSA_BITS) - 1)
BKEY_MANTISSA_BITS  245 drivers/md/bcache/bset.c 	unsigned int	mantissa:BKEY_MANTISSA_BITS;
BKEY_MANTISSA_BITS  625 drivers/md/bcache/bset.c 	f->exponent = max_t(int, f->exponent - BKEY_MANTISSA_BITS, 0);