Re: SiI3112 Serial ATA Maxtor 6Y120M0 incorrect geometry detected

[Bartlomiej Zolnierkiewicz]

On Sun, 26 Sep 2004 12:29:37 +0200, Andries Brouwer
<andries.brouwer@xxxxxx> wrote:
> On Sun, Sep 26, 2004 at 12:15:33AM +0200, Bartlomiej Zolnierkiewicz wrote:
> 
> > I'm tired of this issue and this is what I'm going to do:
> > - remove CHS info from IDE printks and /proc/ide/
> > - add BLKGETSTART ioctl for getting partition's start sector
> >   (this is the only legitimate use of HDIO_GETGEO currently)
> > - at least obsolete HDIO_GETGEO in IDE or even remove it (failing is
> >   better than returning unexpected results)
> > - silence complainers :)
> >
> > Bartlomiej
> 
> Yes. Consider returning 0 for C/H/S in HDIO_GETGEO.
> 
> We need the BLKGETSTART ioctl for another reason:
> the field start of a struct hd_geometry has 32 bits
> and fails for partitions starting past the 2TB mark.
> So, just like BLKGETSIZE64, this BLKGETSTART must
> return a u64 and return an offset in bytes.

Yes, I though so. Also u64 is 64-bit safe.

> As we all know, geometry is meaningless for IDE.
> But it is not for MFM/RLL and similar ancient stuff.
> If support for old disks is not broken yet, try not to break it.

OK.
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