From: Peter Xu <peterx@xxxxxxxxxx> Fix up a breakage on uffd hugetlb test due to removal of a temp variable, as reported by Ryan [1]. Instead of using the previous calculation, use the largest we can have (which is put in freepgs) and cut it into half for userfault tests. [1] https://lore.kernel.org/r/1c20b717-c5b5-4bdf-8fcd-d46db135b7fa@xxxxxxx Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx> Cc: David Hildenbrand <david@xxxxxxxxxx> Cc: Muchun Song <muchun.song@xxxxxxxxx> Reported-by: Ryan Roberts <ryan.roberts@xxxxxxx> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> --- tools/testing/selftests/mm/run_vmtests.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index b1b78e45d613..223c2304f885 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -298,7 +298,8 @@ CATEGORY="userfaultfd" run_test ./uffd-unit-tests uffd_stress_bin=./uffd-stress CATEGORY="userfaultfd" run_test ${uffd_stress_bin} anon 20 16 # Hugetlb tests require source and destination huge pages. Pass in half -# the size ($half_ufd_size_MB), which is used for *each*. +# the size of the free pages we have, which is used for *each*. +half_ufd_size_MB=$((freepgs / 2)) CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 32 CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32 CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16 -- 2.44.0
