[PATCH v2 08/23] tools/testing/vma: add simple test for append_vma_flags()
From: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
Date: 2026-03-16 13:09:17
Also in:
linux-fsdevel, linux-mips, linux-mm, linux-riscv, linux-s390, linux-um, linuxppc-dev, lkml, loongarch
Subsystem:
memory mapping, the rest · Maintainers:
Andrew Morton, Liam R. Howlett, Lorenzo Stoakes, Linus Torvalds
Add a simple test for append_vma_flags() to assert that it behaves as expected. Additionally, include the VMA_REMAP_FLAGS definition in the VMA tests to allow us to use this value in the testing. Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org> --- tools/testing/vma/include/dup.h | 3 +++ tools/testing/vma/tests/vma.c | 25 +++++++++++++++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h
index cbdeb03ee7e5..47ad01c5d15e 100644
--- a/tools/testing/vma/include/dup.h
+++ b/tools/testing/vma/include/dup.h@@ -345,6 +345,9 @@ enum { */ #define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP) +#define VMA_REMAP_FLAGS mk_vma_flags(VMA_IO_BIT, VMA_PFNMAP_BIT, \ + VMA_DONTEXPAND_BIT, VMA_DONTDUMP_BIT) + #define DEFAULT_MAP_WINDOW ((1UL << 47) - PAGE_SIZE) #define TASK_SIZE_LOW DEFAULT_MAP_WINDOW #define TASK_SIZE_MAX DEFAULT_MAP_WINDOW
diff --git a/tools/testing/vma/tests/vma.c b/tools/testing/vma/tests/vma.c
index feea6d270233..98e465fb1bf2 100644
--- a/tools/testing/vma/tests/vma.c
+++ b/tools/testing/vma/tests/vma.c@@ -555,6 +555,30 @@ static bool test_vma_flags_and(void) return true; } +/* Ensure append_vma_flags() acts as expected. */ +static bool test_append_vma_flags(void) +{ + vma_flags_t flags = append_vma_flags(VMA_REMAP_FLAGS, VMA_READ_BIT, + VMA_WRITE_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); + + ASSERT_FLAGS_SAME(&flags, VMA_IO_BIT, VMA_PFNMAP_BIT, + VMA_DONTEXPAND_BIT, VMA_DONTDUMP_BIT, VMA_READ_BIT, + VMA_WRITE_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); + + flags = append_vma_flags(EMPTY_VMA_FLAGS, VMA_READ_BIT, VMA_WRITE_BIT); + ASSERT_FLAGS_SAME(&flags, VMA_READ_BIT, VMA_WRITE_BIT); + + return true; +} + static void run_vma_tests(int *num_tests, int *num_fail) { TEST(copy_vma);
@@ -569,4 +593,5 @@ static void run_vma_tests(int *num_tests, int *num_fail) TEST(vma_flags_empty); TEST(vma_flags_diff); TEST(vma_flags_and); + TEST(append_vma_flags); }
--
2.53.0