Re: [PATCH v4] selftest/vm: add mremap expand merge offset test

[David Hildenbrand]

On 02.01.23 17:11, Lorenzo Stoakes wrote:
> Add a test to assert that we can mremap() and expand a mapping starting
> from an offset within an existing mapping. We unmap the last page in a 3
> page mapping to ensure that the remap should always succeed, before
> remapping from the 2nd page.
>
> This is additionally a regression test for the issue solved in "mm, mremap:
> fix mremap() expanding vma with addr inside vma" and confirmed to fail
> prior to the change and pass after it.
>
> Finally, this patch updates the existing mremap expand merge test to check
> error conditions and reduce code duplication between the two tests.
>
> Signed-off-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
> ---

Acked-by: David Hildenbrand <david@xxxxxxxxxx>

--
Thanks,

David / dhildenb