+ selftests-vm-add-hugetlb_shared-userfaultfd-test-to-run_vmtestssh.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: selftests: vm: add hugetlb_shared userfaultfd test to run_vmtests.sh
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-vm-add-hugetlb_shared-userfaultfd-test-to-run_vmtestssh.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-vm-add-hugetlb_shared-userfaultfd-test-to-run_vmtestssh.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Axel Rasmussen <axelrasmussen@google.com>
Subject: selftests: vm: add hugetlb_shared userfaultfd test to run_vmtests.sh
Date: Wed, 1 Jun 2022 14:09:46 -0700

Patch series "userfaultfd: add /dev/userfaultfd for fine grained access
control", v3.


This patch (of 6):

This not being included was just a simple oversight.  There are certain
features (like minor fault support) which are only enabled on shared
mappings, so without including hugetlb_shared we actually lose a
significant amount of test coverage.

Link: https://lkml.kernel.org/r/20220601210951.3916598-1-axelrasmussen@google.com
Link: https://lkml.kernel.org/r/20220601210951.3916598-2-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Charan Teja Kalla <charante@codeaurora.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dmitry V. Levin <ldv@altlinux.org>
Cc: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nadav Amit <namit@vmware.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/vm/run_vmtests.sh |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/tools/testing/selftests/vm/run_vmtests.sh~selftests-vm-add-hugetlb_shared-userfaultfd-test-to-run_vmtestssh
+++ a/tools/testing/selftests/vm/run_vmtests.sh
@@ -121,9 +121,11 @@ run_test ./gup_test -a
 run_test ./gup_test -ct -F 0x1 0 19 0x1000
 
 run_test ./userfaultfd anon 20 16
-# Test requires source and destination huge pages.  Size of source
-# (half_ufd_size_MB) is passed as argument to test.
+# Hugetlb tests require source and destination huge pages. Pass in half the
+# size ($half_ufd_size_MB), which is used for *each*.
 run_test ./userfaultfd hugetlb "$half_ufd_size_MB" 32
+run_test ./userfaultfd hugetlb_shared "$half_ufd_size_MB" 32 "$mnt"/uffd-test
+rm -f "$mnt"/uffd-test
 run_test ./userfaultfd shmem 20 16
 
 #cleanup
_

Patches currently in -mm which might be from axelrasmussen@google.com are

mm-userfaultfd-fix-uffdio_continue-on-fallocated-shmem-pages.patch
selftests-vm-add-hugetlb_shared-userfaultfd-test-to-run_vmtestssh.patch
userfaultfd-add-dev-userfaultfd-for-fine-grained-access-control.patch
userfaultfd-selftests-modify-selftest-to-use-dev-userfaultfd.patch
userfaultfd-update-documentation-to-describe-dev-userfaultfd.patch
userfaultfd-selftests-make-dev-userfaultfd-testing-configurable.patch
selftests-vm-add-dev-userfaultfd-test-cases-to-run_vmtestssh.patch