On Tue 25-07-17 12:06:57, Anshuman Khandual wrote:
[...]
> diff --git a/tools/testing/selftests/vm/mremap_mirror_private_anon.c
> b/tools/testing/selftests/vm/mremap_mirror_private_anon.c
[...]
> + ptr = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE,
> + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
> + if (ptr == MAP_FAILED) {
> + perror("map() failed");
> + return -1;
> + }
> + memset(ptr, PATTERN, alloc_size);
> +
> + mirror_ptr = (char *) mremap(ptr, 0, alloc_size, MREMAP_MAYMOVE);
> + if (mirror_ptr == MAP_FAILED) {
> + perror("mremap() failed");
> + return -1;
> + }
What is the point of this test? It will break with Mike's patch very
soon. Btw. it never worked.
--
Michal Hocko
SUSE Labs
