linux-kernel - Re: [Patch v2 3/4] mm/page_alloc.c: pass all bad reasons to bad

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Message-ID: <254a968e-2393-919b-ab21-a2ada2f604ed@redhat.com>
Date:   Mon, 20 Jan 2020 13:19:10 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Michal Hocko <mhocko@...nel.org>,
        Wei Yang <richardw.yang@...ux.intel.com>
Cc:     akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, rientjes@...gle.com
Subject: Re: [Patch v2 3/4] mm/page_alloc.c: pass all bad reasons to
 bad_page()

On 20.01.20 11:22, Michal Hocko wrote:
> On Mon 20-01-20 11:04:14, Wei Yang wrote:
>> Now we can pass all bad reasons to __dump_page().
> 
> And we do we want to do that? The dump of the page will tell us the
> whole story so a single and the most important reason sounds like a
> better implementation. The code is also more subtle because each caller
> of the function has to be aware of how many reasons there might be.
> Not to mention that you need a room for 5 pointers on the stack and this
> and page allocator might be called from deeper call chains.
> 

+1, I don't think we want/need this


-- 
Thanks,

David / dhildenb