Re: [PATCH 4/4] Revert "mm/page_alloc: make should_fail_alloc_page() static"

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On Thu, Jul 15, 2021 at 07:34:53AM +0100, Christoph Hellwig wrote:
> On Tue, Jul 13, 2021 at 02:56:25PM +0100, Mel Gorman wrote:
> > From: Matteo Croce <mcroce@xxxxxxxxxxxxx>
> > 
> > This reverts commit f7173090033c70886d925995e9dfdfb76dbb2441.
> > 
> > Fix an unresolved symbol error when CONFIG_DEBUG_INFO_BTF=y:
> 
> I still fundamentally disagreed with this "fix".  Whatever code requires
> a function to be non-static without a prototype and reference is
> completely fucked up beyond rescue and needs to be disabled util
> it can be fixed instead of worked around like this.

I'm definitely not happy with the fix but the breakage was unintentional
and given that it was done for a W=1 warning, the patch was low priority
and I felt that users that do error injection to stress failure paths at
least had some value. If I was fixing something important, I would feel
differently and we've slammed patches before that fixed warnings while
introducing worse problems. I'm still hoping that BTF gets fixed because
it's the right thing to do.

-- 
Mel Gorman
SUSE Labs




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