Merge patch series "pidfds: add coredump_code field to pidfd_info"

Emanuele Rocca <emanuele.rocca@arm.com> says:

This patchs series adds a new field called coredump_code to struct
pidfd_info, as well as the relevant selftests. Note that the coredump
selftests are currently not passing.

* patches from https://patch.msgid.link/acE5fYOgyVUYahIn@NH27D9T0LF:
  selftests: check pidfd_info->coredump_code correctness
  pidfds: add coredump_code field to pidfd_info

Link: https://patch.msgid.link/acE5fYOgyVUYahIn@NH27D9T0LF
Signed-off-by: Christian Brauner <brauner@kernel.org>