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Re: [PATCH 0/2] Add explicit coredump filtering for DAX mappings

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Ross Zwisler <ross.zwisler@linux.intel.com> writes:

> Add two new flags to the existing coredump mechanism for ELF files to allow
> us to explicitly filter DAX mappings.  This is desirable because DAX
> mappings, like hugetlb mappings, have the potential to be very large.
>
> The coredump code relies on get_user_page() to populate the coredump file
> with the appropriate data, and for DAX mappings this currently fails.  This
> results in a hole being placed in the coredump file, so you end up reading
> back zeros.  Once the get_user_pages() patch series from Dan Williams [1]
> is merged, DAX core dumps will give real data.
>
> I have a patch ready for core(5) to update the documentation on the new
> filtering flags.  I'll send it out once this gets merged.

Looks straight-forward.

Acked-by: Jeff Moyer <jmoyer@redhat.com>
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[PATCH 0/2] Add explicit coredump filtering for DAX mappings Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-06 00:40 +0200
  Re: [PATCH 0/2] Add explicit coredump filtering for DAX mappings Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-10-14 01:00 +0200
  Re: [PATCH 0/2] Add explicit coredump filtering for DAX mappings Jeff Moyer <jmoyer@redhat.com> - 2015-10-15 22:10 +0200

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