Re: linux-next: Tree for Dec 3 (mm/Kconfig)

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On Thu, Dec 5, 2013 at 1:00 AM, David Rientjes <rientjes@xxxxxxxxxx> wrote:
> On Wed, 4 Dec 2013, Sima Baymani wrote:
>
>> When generating randconfig, got following warning:
>>
>> warning: (HWPOISON_INJECT && MEM_SOFT_DIRTY) selects PROC_PAGE_MONITOR
>> which has unmet direct dependencies (PROC_FS && MMU)
>>
>> I would have liked to form a patch for it, but not sure whether to
>> simply add PROC_FS && MMU as dependencies for HWPOISON_INJECT and
>> MEM_SOFT_DIRTY, or if some other fix would be more suitable?
>>
>
> CONFIG_HWPOISON_INJECT is unrelated, it already depends on CONFIG_PROC_FS.
>
> CONFIG_PROC_PAGE_MONITOR is obviously only useful for CONFIG_PROC_FS, so
> the correct fix would be to make CONFIG_MEM_SOFT_DIRTY depend on
> CONFIG_PROC_FS.
>
> Want to try sending a patch?

You bet!

However, I have the slightest confusion:
I tested what you suggested by running "make oldconfig", and it does
eliminate the error. However, I can't figure out why it's enough with
adding the dependency for PROC_FS in MEM_SOFT_DIRTY, if
PROC_PAGE_MONITOR depends on both?

-Sima
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