EXT4_EPOCH_MASK   839 fs/ext4/ext4.h 	u32 extra =((time->tv_sec - (s32)time->tv_sec) >> 32) & EXT4_EPOCH_MASK;
EXT4_EPOCH_MASK   846 fs/ext4/ext4.h 	if (unlikely(extra & cpu_to_le32(EXT4_EPOCH_MASK)))
EXT4_EPOCH_MASK   847 fs/ext4/ext4.h 		time->tv_sec += (u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32;