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SubjectRe: [RFC] Raceless module interface


On Thu, 12 Sep 2002, Daniel Phillips wrote:

> On Thursday 12 September 2002 05:13, Rusty Russell wrote:
> > B) We do not handle the "half init problem" where a module fails to load, eg.
> > a = register_xxx();
> > b = register_yyy();
> > if (!b) {
> > unregister_xxx(a);
> > return -EBARF;
> > }
> > Someone can start using "a", and we are in trouble when we remove
> > the failed module.
>
> No we are not. The module remains in the 'stopped' state
> throughout the entire initialization process, as it should and
> does, in my model.

Bzzzert. At the very least, for block devices we need to be able to open
disks during module initialization.

Al, fully expecting a stack of mind-boggling (and broken) kludges to be
posted...

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