On Jan 19, 2007 14:19 +0900, Takashi Sato wrote: > >>On Jan 16, 2007 21:03 +0900, sho@xxxxxxxxxxxxxx wrote: > >>>1. Add new ioctl(EXT4_IOC_DEFRAG) which returns the first physical > >>> block number of the specified file. With this ioctl, a command > >>> gets the specified directory's. > >> > >>Maybe I don't understand, but how is this different from the long-time > >>FIBMAP ioctl? > > > >I can use FIBMAP instead of my new ioctl. > >You are right. I should have used FIBMAP ioctl... > > I have to get the physical block number of the specified directory. > But FIBMAP is available only for a regular file, not for a directory. > So I will use my new ioctl. Though it might make sense to implement FIBMAP for a directory, to keep it consistent and allow user-space tools like "filefrag" to work on directories also. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
