Re: [PATCH 6.1.y] mm/damon/vaddr: fix issue in damon_va_evenly_split_region()

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

Found matching upstream commit: f3c7a1ede435e2e45177d7a490a85fb0a0ec96d1

WARNING: Author mismatch between patch and found commit:
Backport author: SeongJae Park <sj@kernel.org>
Commit author: Zheng Yejian <zhengyejian@huaweicloud.com>


Status in newer kernel trees:
6.12.y | Not found
6.6.y | Not found
6.1.y | Not found

Note: The patch differs from the upstream commit:
---
1:  f3c7a1ede435e ! 1:  624d3f8e31238 mm/damon/vaddr: fix issue in damon_va_evenly_split_region()
    @@ Commit message
         And add 'nr_piece == 1' check in damon_va_evenly_split_region() for better
         code readability and add a corresponding kunit testcase.
     
    -
         This patch (of 2):
     
         According to the logic of damon_va_evenly_split_region(), currently
    @@ Commit message
         Cc: Ye Weihua <yeweihua4@huawei.com>
         Cc: <stable@vger.kernel.org>
         Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    +    (cherry picked from commit f3c7a1ede435e2e45177d7a490a85fb0a0ec96d1)
     
    - ## mm/damon/tests/vaddr-kunit.h ##
    -@@ mm/damon/tests/vaddr-kunit.h: static void damon_test_split_evenly(struct kunit *test)
    + ## mm/damon/vaddr-test.h ##
    +@@ mm/damon/vaddr-test.h: static void damon_test_split_evenly(struct kunit *test)
      	damon_test_split_evenly_fail(test, 0, 100, 0);
      	damon_test_split_evenly_succ(test, 0, 100, 10);
      	damon_test_split_evenly_succ(test, 5, 59, 5);
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.1.y        |  Success    |  Success   |