checkpoint_ver 1609 fs/f2fs/checkpoint.c ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); checkpoint_ver 1589 fs/f2fs/f2fs.h return le64_to_cpu(cp->checkpoint_ver); checkpoint_ver 146 include/linux/f2fs_fs.h __le64 checkpoint_ver; /* checkpoint block version number */