makedumpfile-1.5.9: Introduce parallel compression processing.

[Atsushi Kumagai]

Hello Louis,

>> o Support new kernels
>>  - The supported kernel is updated to 4.1 in this version.
>>    At first I'm going to extend the supported version to 4.2, but
>>    I found an issue that makedumpfile seems to exclude necessary pages
>>    by mistake on linux 4.2. When crash-7.1.3 reads that filtered dump file,
>>    the following message is shown.
>>
>>       crash: page excluded: kernel virtual address: f3fe0000  type: "fill_task_struct"
>>
>>    This will be fixed in the next version.
>
>Have you fixed the 4.2 kernel issue already or you intend to work on it in the
>future ?

I haven't done anything yet, I was going to work from now.

>Both Debian and Ubuntu run 4.2 kernel so if waiting for a fix is acceptable I
>would rather bring in a 1.5.9 + patch version.

So it will be helpful if you can do it.


Thanks,
Atsushi Kumagai