Re: +exec_domain-establish-a-linux32-domain-on-config_compat-systems.patch added to -mm tree

[Oleg Nesterov]

On 11/15, David Daney wrote:
>
> On 11/13/2010 09:17 AM, Oleg Nesterov wrote:
>>
>>> We can avoid the failed module loading overhead by building-in the
>>> linux32_exec_domain for systems that have CONFIG_COMPAT.
>>
>> Indeed. But at the same time this means it is not possible to use
>> personality-8.ko if the system has it.
>
> Well in the same way it is not possible to use personality-0.ko
> (PER_LINUX) because it is just as built-in.

Sure, but this was never possible. But your patch adds the obvious
user-visible change.

>> Don't get me wrong, I have no idea why anyone could want this module,
>> just I am a bit worried.
>
> If the personality is built-in, then I don't see how it makes any sense
> to attempt to override it with an externally supplied version.  If you
> want set a domain for PER_LINUX32, don't configure you system to supply
> a default version.

Well, no need to convince me ;) To me, this request_module() doesn't
make any sense at all.

I won't argue against this change. Just I wanted to be sure this
issue is not overlooked.

Oleg.

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