Re: [PATCH v2 2/2] [PATCH 2/2] mm: add merging after mremap resize

[Andrew Morton]

On Fri, 27 May 2022 23:17:08 +0200 Jakub Matěna <matenajakub@xxxxxxxxx> wrote:

> When mremap call results in expansion, it might be possible to merge the
> VMA with the next VMA which might become adjacent. This patch adds
> vma_merge call after the expansion is done to try and merge.

Thanks.

Would it make sense to add a test case for this in (I assume)
tools/testing/selftests/vm/mremap_test.c?  Maybe parse /proc/self/maps
and check that the merging occurred as expected?