total_mapping_size
total_size = total_mapping_size(elf_phdata,
total_size = total_mapping_size(interp_elf_phdata,
KUNIT_EXPECT_EQ(test, total_mapping_size(NULL, 0), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 0), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 1), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(&empty[1], 1), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 2), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(mount, ARRAY_SIZE(mount)), mount_size);
KUNIT_EXPECT_EQ(test, total_mapping_size(unordered, ARRAY_SIZE(unordered)), mount_size);