diff options
| author | Lorenzo Stoakes <lorenzo.stoakes@oracle.com> | 2025-07-02 09:47:17 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-13 16:38:25 -0700 |
| commit | 4e25f85b9f85d238fe012cb18cd040172344d7e6 (patch) | |
| tree | e21e2f37ce72f84c57f0d1db88f2a3b54593683f /tools/testing/selftests/mm/vm_util.c | |
| parent | 526f36f3f47b9ad29ffb1bf668b7f295287ee11b (diff) | |
tools/testing/selftests: add mremap() unfaulted/faulted test cases
Assert that mremap() behaviour is as expected when moving around unfaulted
VMAs immediately adjacent to faulted ones, as well as moving around
faulted VMAs and placing them back immediately adjacent to the VMA from
which they were moved.
This also introduces a shared helper for the syscall version of mremap()
so we don't encounter any issues with libc filtering parameters.
Link: https://lkml.kernel.org/r/20250702084717.21360-1-lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/mm/vm_util.c')
| -rw-r--r-- | tools/testing/selftests/mm/vm_util.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 5492e3f784df..1d434772fa54 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -524,3 +524,11 @@ int read_sysfs(const char *file_path, unsigned long *val) return 0; } + +void *sys_mremap(void *old_address, unsigned long old_size, + unsigned long new_size, int flags, void *new_address) +{ + return (void *)syscall(__NR_mremap, (unsigned long)old_address, + old_size, new_size, flags, + (unsigned long)new_address); +} |