Subject: Re: more disksort fun
To: Juergen Hannken-Illjes <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 02/05/2000 13:08:43
On Sat, 5 Feb 2000 12:03:36 +0100 (MET)
Juergen Hannken-Illjes <firstname.lastname@example.org> wrote:
> > Thoughts?
> Another field for sorting? Why don't you use b_resid alias b_cylinder as a
> first key and b_blkno as a second. The first key should be the raw block
> number. Then use only disksort_cylinder as before.
Well, it doesn't have to be used just for sorting, although that's why
I added it.
Basically, what I did was move all of the partition translation further
up in the individual drivers. Now places which used to do partition
translation have b_rawblkno to use instead. So, really, it can be used
as a communication method from the upper half to the lower half.
Okay, maybe I'm stretching that a little... :-)
> #define b_rawblkno b_resid ????
I don't think that's necessarily correct. In the disksort_cylinder()
case you want both cylinder and rawblkno (maybe rawblkno in this case
would be sector-relative-to-cylinder ?).
-- Jason R. Thorpe <email@example.com>