Mailinglist Archive: opensuse-kernel (62 mails)

[Greg Freemyer <greg.freemyer@xxxxxxxxx>]

On Mon, Apr 12, 2010 at 4:11 PM, Jeff Mahoney <jeffm@xxxxxxx> wrote:
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> On 04/12/2010 12:58 PM, Jiri Kosina wrote:
> > [ reposted with opensuse-kernel@ mailinglist added, sorry to those of you
> >   who received this twice ... please reply to this instance if possible ]
> >
> > Hi Tejun,
> >
> > while chasing suspend-to-disk bug in -rc3 with Rafael and Jiri, we have
> > noticed that master has
> >
> >       CONFIG_DEBUG_BLOCK_EXT_DEVT
> >
> > set for almost all configs. This happened through this commit:
> >
> >       commit 5246824c7ea3313c8e4f42f9b19d9e6f0b51861a
> >       Author: Tejun Heo <teheo@xxxxxxx>
> >       Date:   Fri May 29 14:37:12 2009 +0900
> >
> >           - Update config files to enable DEBUG_BLOCK_EXT_DEVT on all configs
> >             except for vanilla and ppc/ps3.
> >           - patches.suse/block-add-mangle-devt-switch: block: add
> >             genhd.mangle_minor parameter (fate#305584).
> >
> > What is the reason for having it enabled in non-debug/non-trace kernel
> > configs? Even the changelog of 'block-add-mangle-devt-switch' patch
> > mentions this is basically only for testing environments ...
>
> It used to be only for testing environments, when the kinks were still
> getting worked out. The real-world application for this is e.g. to allow
> more than 15 partitions on a ATA device. We actually did receive bug
> reports about this.
>
> Carlos, care to speak up? :)
>
> - -Jeff

If that's what it is, the inability of 11.1 and older to handle
greater than 15 partitions via libata was a major gripe on the
opensuse user list.

Greg
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