The quilt patch titled
Subject: selftests/mm: ensure uffd-wp-mremap gets pages of each size
has been removed from the -mm tree. Its filename was
selftests-mm-ensure-uffd-wp-mremap-gets-pages-of-each-size.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Brendan Jackman <jackmanb@xxxxxxxxxx>
Subject: selftests/mm: ensure uffd-wp-mremap gets pages of each size
Date: Tue, 11 Mar 2025 13:18:21 +0000
This test allocates a page of every available size and doesn't have any
SKIP logic if the allocation fails. So, ensure it's available and skip
the test if we can't do so.
Link: https://lkml.kernel.org/r/20250311-mm-selftests-v4-10-dec210a658f5@xxxxxxxxxx
Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx>
Cc: Dev Jain <dev.jain@xxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Mateusz Guzik <mjguzik@xxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/run_vmtests.sh | 23 +++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/run_vmtests.sh~selftests-mm-ensure-uffd-wp-mremap-gets-pages-of-each-size
+++ a/tools/testing/selftests/mm/run_vmtests.sh
@@ -325,9 +325,30 @@ CATEGORY="userfaultfd" run_test ${uffd_s
CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32
CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16
CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem-private 20 16
-CATEGORY="userfaultfd" run_test ./uffd-wp-mremap
+# uffd-wp-mremap requires at least one page of each size.
+have_all_size_hugepgs=true
+declare -A nr_size_hugepgs
+for f in /sys/kernel/mm/hugepages/**/nr_hugepages; do
+ old=$(cat $f)
+ nr_size_hugepgs["$f"]="$old"
+ if [ "$old" == 0 ]; then
+ echo 1 > "$f"
+ fi
+ if [ $(cat "$f") == 0 ]; then
+ have_all_size_hugepgs=false
+ break
+ fi
+done
+if $have_all_size_hugepgs; then
+ CATEGORY="userfaultfd" run_test ./uffd-wp-mremap
+else
+ echo "# SKIP ./uffd-wp-mremap"
+fi
#cleanup
+for f in "${!nr_size_hugepgs[@]}"; do
+ echo "${nr_size_hugepgs["$f"]}" > "$f"
+done
echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages
CATEGORY="compaction" run_test ./compaction_test
_
Patches currently in -mm which might be from jackmanb@xxxxxxxxxx are
scripts-gdb-add-lx_per_cpu_ptr.patch
