f2fs_chksum
chksum = f2fs_chksum(chksum, (__u8 *)ckpt + chksum_ofs,
chksum = f2fs_chksum(sbi->s_chksum_seed, (__u8 *)&ino, sizeof(ino));
chksum_seed = f2fs_chksum(chksum, (__u8 *)&gen, sizeof(gen));
chksum = f2fs_chksum(chksum_seed, (__u8 *)ri, offset);
chksum = f2fs_chksum(chksum, (__u8 *)&dummy_cs, cs_size);
chksum = f2fs_chksum(chksum, (__u8 *)ri + offset,
sbi->s_chksum_seed = f2fs_chksum(~0, raw_super->uuid,