linux-kernel - [PATCH v2 0/3] Small userfaultfd selftest fixups

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Message-Id: <20210930212309.4001967-1-axelrasmussen@google.com>
Date:   Thu, 30 Sep 2021 14:23:06 -0700
From:   Axel Rasmussen <axelrasmussen@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Peter Xu <peterx@...hat.com>, Shuah Khan <shuah@...nel.org>
Cc:     linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Axel Rasmussen <axelrasmussen@...gle.com>
Subject: [PATCH v2 0/3] Small userfaultfd selftest fixups

Changes from v1 -> v2:
- Substantially rewrote "fix feature support detection"; previously, it tried to
  do some larger refactor wherein the global test_uffdio_* variables were
  removed. This was controversial, so it now simply queries features in
  set_test_type, and leaves the rest of the program structure largely the same.
- The "fix calculation of expected ioctls" patch is conceptually the same as v1,
  but changed slightly to fit with the modified feature support detection in v2.
- Moved patch 3/3 to 1/3, since it is uncontroversial and could be merged on its
  own. I don't want the other two to cause merge conflicts for it in future
  versions.
- Picked up a R-B.

Axel Rasmussen (3):
  userfaultfd/selftests: don't rely on GNU extensions for random numbers
  userfaultfd/selftests: fix feature support detection
  userfaultfd/selftests: fix calculation of expected ioctls

 tools/testing/selftests/vm/userfaultfd.c | 157 +++++++++++------------
 1 file changed, 73 insertions(+), 84 deletions(-)

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2.33.0.800.g4c38ced690-goog