On 07/17/2018 02:37 PM, Andrew Morton wrote:
> On Fri, 15 Jun 2018 13:33:39 -0700 Dave Jiang <[email protected]> wrote:
>
>> When pmem namespaces created are smaller than section size, this can cause
>> issue during removal and gpf was observed:
>>
>> ...
>>
>> Add code to check whether we have mapping already in the same section and
>> prevent additional mapping from created if that is the case.
>>
>
> Which kernel version(s) do you believe need this fix, and why?
>
It really should go into 4.18-rc and backported to stable since without
it a GPF can be triggered when pmem namespaces smaller than section size
are constructed.
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