Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> 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@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
