Re: 2.6.5-rc1 SCSI + st regressions (was: Linux 2.6.5-rc1)

[Andy Isaacson]

On Wed, Mar 17, 2004 at 10:32:01PM +0100, Matthias Andree wrote:
> On Wed, 17 Mar 2004, Kai Makisara wrote:
> > # ChangeSet
> > #   2004/03/12 16:22:36-08:00 greg@xxxxxxxxx 
> > #   remove cdev_set_name completely as it is not needed.
> > 
> > (and editing drivers/char/tty_io.c to get the kernel to compile) solved 
> > the problem for me. st.c is using the name put into kobj.name in making 
> > the class file names. I will make a patch that removes this dependency.
> 
> I had backed out that ChangeSet here as I was suspecting it (about the
> only one "new enough" to cause these problems) but bumped into tty_io.c
> compile failures and didn't have time to investigate.
> 
> > While looking at this problem, I noticed that the naming changes already 
> > committed to BK had disappeared. Looking at st.c history revealed that the 
> > following change had been committed (sorry for wrapping) by greg@xxxxxxxxx 
> > 46 hours ago:
> 
> This is how the change tree looks like in BitKeeper's histtool,
> the top line is the date in MM-DD format:
> 
> 02-22  02-24   03-03     03-13        03-13           03-15
> kai  -> axbø -> kai ------------------------------->  greg
> 1.78    1.79\   1.80                                  1.81
>              \                                   /
>               `----------corbet-------greg------'
>                          1.79.1.1     1.79.1.2
> 
> ...
> 
> Logs:
> 
> ======== st.c 1.1..1.81 ========
> D 1.81 04/03/15 15:02:26-08:00 greg@xxxxxxxxx 104 101 0/5/4363
> P drivers/scsi/st.c
> C merge
> ------------------------------------------------
> D 1.79.1.2 04/03/12 08:22:11-08:00 greg@xxxxxxxxx[greg] 103 102 0/1/4350
> P drivers/scsi/st.c
> C remove cdev_set_name completely as it is not needed.
> ------------------------------------------------
> D 1.79.1.1 04/03/13 00:47:18-08:00 corbet@xxxxxxx[greg] 102 100 2/3/4349
> P drivers/scsi/st.c
> C cdev 2/2: hide cdev->kobj
> ------------------------------------------------
> D 1.80 04/02/26 05:24:19-06:00 Kai.Makisara@xxxxxxxxxxx[jejb] 101 100 28/12/4340
> P drivers/scsi/st.c
> C SCSI tape sysfs name fixes
> ------------------------------------------------
> D 1.79 04/02/23 06:23:46-08:00 axboe@xxxxxxx[torvalds] 100 99 1/1/4351
> P drivers/scsi/st.c
> C fix SCSI non-sector bio backed IO
> 
> > The change comment was "merge" and it resulted in st.c version 1.81. (I am 
> > not using Bitkeeper but trying to extract information from bkbits.net.)
> 
> BitKeeper doesn't have more info and this doesn't look like an auto-generated
> comment of BitKeeper's, but seems to have been entered manually. Blame Greg?

That's a pretty nasty merge, so it's not real suprising that Greg didn't
get it completely right.

Nice ASCII art, BTW.  If you can reduce it to an algorithm I bet Larry
would like to hire you to add it to BK. :)

-andy
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