JFS_IMMUTABLE_FL
{JFS_IMMUTABLE_FL, FS_IMMUTABLE_FL},
if (flags & JFS_IMMUTABLE_FL)
jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
JFS_IP(inode)->mode2 |= JFS_NOATIME_FL | JFS_IMMUTABLE_FL;
JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL);