[Crash-utility] [PATCH] Fix for "files -[cp]" options on Linux 4.17

[Dave Anderson]

----- Original Message -----
> 
> ... [ cut ] ...
>
> But then again, I note that "files -p" fails quite frequently due to
> some kind of mis-use of the contents of the radix tree.  The 2 options
> were introduced together in crash-7.1.2, but I've never really used them.
> 

FYI: I fixed do_radix_tree_dump_cb() to check for RADIX_TREE_EXCEPTIONAL_ENTRY
slot entries, and now "files -p" seems to work as expected:

  https://github.com/crash-utility/crash/commit/b9df4d156838b4e8aa2b2f51aff3460a1c61f6a8

Dave