Re: [RFC] mm/page_alloc: Enumerate bad page reasons

From: Anshuman Khandual
Date: Mon Mar 30 2020 - 08:28:53 EST




On 03/30/2020 02:15 PM, David Hildenbrand wrote:
> On 30.03.20 08:51, Anshuman Khandual wrote:
>> Enumerate all existing bad page reasons which can be used in bad_page() for
>> reporting via __dump_page(). Unfortunately __dump_page() cannot be changed.
>> __dump_page() is called from dump_page() that accepts a raw string and is
>> also an exported symbol that is currently being used from various generic
>> memory functions and other drivers. This reduces code duplication while
>> reporting bad pages.
>
> Yeah sounds nice, but "56 insertions(+), 20 deletions(-)" does not sound
> so nice ... and the "code duplication" is actually "repeating strings".

But repeating strings in very similar functions dealing with bad page state
is not bit suboptimal ?

>
> ... I don't think we want/need this.
>