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| author | Nhat Pham <nphamcs@gmail.com> | 2024-02-06 01:56:08 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-23 02:27:16 +0300 |
| commit | b93c28ff72d42b09d539ac68845307b90cf95e53 (patch) | |
| tree | cc63f7183e2038f3edc05ee3e9b4932c04c23999 /mm/memory.c | |
| parent | 012688f6006c01655e250c1612b544561b7c50be (diff) | |
| download | linux-b93c28ff72d42b09d539ac68845307b90cf95e53.tar.xz | |
selftests: add zswapin and no zswap tests
Add a selftest to cover the zswapin code path, allocating more memory than
the cgroup limit to trigger swapout/zswapout, then reading the pages back
in memory several times. This is inspired by a recently encountered
kernel crash on the zswapin path in our internal kernel, which went
undetected because of a lack of test coverage for this path.
Add a selftest to verify that when memory.zswap.max = 0, no pages can go
to the zswap pool for the cgroup.
[nphamcs@gmail.com: remove redundant comment, add success checks]
Link: https://lkml.kernel.org/r/20240222043132.616320-1-nphamcs@gmail.com
Link: https://lkml.kernel.org/r/20240205225608.3083251-4-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Suggested-by: Rik van Riel <riel@surriel.com>
Suggested-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions