Re: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or suspending

[Pekka Enberg <penberg@cs.helsinki.fi>]

Hi Ben,

On Fri, Jun 12, 2009 at 2:41 PM, Benjamin
Herrenschmidt<benh@kernel.crashing.org> wrote:
>> That said, Nick and Ingo seem to think special-casing is questionable
>> and I haven't had green light for any of the patches yet. The gfp
>> sanitization patch adds some overhead to kmalloc() and page allocator
>> paths which is obviously a concern.
>
> Let's wait and see what Linus thinks...

Yup, lets do that.

On Fri, Jun 12, 2009 at 2:41 PM, Benjamin
Herrenschmidt<benh@kernel.crashing.org> wrote:
>> So while we continue to discuss this, I'd really like to proceed with
>> the patch below. At least it should allow people to boot their kernels
>> (although it will produce warnings). I really don't want to keep other
>> people waiting for us to reach a resolution on this. Are you OK with
>> that?
>
> I don't care -how- we achieve the result I want as long as we achieve
> it, which is to remove the need for callers to care. My approach was one
> way to do it, I'm sure there's a better one. That's not the point. I'm
> too tried now to properly review your patch and I'll need to test it
> tomorrow morning, but it looks ok except for the WARN_ON maybe.

OK, the WARN_ON is there because you will get warnings for
might_sleep() et al as well.

                                        Pekka

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