Re: [PATCH v1 5/7] selftests/vm: anon_cow: add liburing test cases

[David Hildenbrand]

On 27.09.22 13:01, David Hildenbrand wrote:
> io_uring provides a simple mechanism to test long-term, R/W GUP pins
> -- via fixed buffers -- and can be used to verify that GUP pins stay
> in sync with the pages in the page table even if a page would
> temporarily get mapped R/O or concurrent fork() could accidentially
> end up sharing pinned pages with the child.
>
> Note that this essentially re-introduces local_config support that was
> removed recently in commit 6f83d6c74ea5 ("Kselftests: remove support of
> libhugetlbfs from kselftests").
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
> ---

The following fixup on top:

diff --git a/tools/testing/selftests/vm/anon_cow.c b/tools/testing/selftests/vm/anon_cow.c
index c1450a5d6f53..01417a604eda 100644
--- a/tools/testing/selftests/vm/anon_cow.c
+++ b/tools/testing/selftests/vm/anon_cow.c
@@ -346,7 +346,7 @@ static void do_test_iouring(char *mem, size_t size, bool use_fork)
        struct io_uring_cqe *cqe;
        struct io_uring_sqe *sqe;
        struct io_uring ring;
-       size_t cur, total;
+       ssize_t cur, total;
        struct iovec iov;
        char *buf, *tmp;
        int ret, fd;


--
Thanks,

David / dhildenb