On Fri, 24 Apr 2026 12:00:51 +0800 Li Wang <[email protected]> wrote:
> This patchset aims to fix various spurious failures and improve the overall > robustness of the cgroup zswap selftests. Great, thanks, I'll queue this in mm.git's mm-new branch. Next week I'll move it into mm-unstable, where it will receive liunx-next exposure. > The primary motivation is to make the tests compatible with architectures > that use non-4K page sizes (such as 64K on ppc64le and arm64). Currently, > the tests rely heavily on hardcoded 4K page sizes and fixed memory limits. Well that's an oops. > On 64K page size systems, these hardcoded values lead to sub-page granularity > accesses, incorrect page count calculations, and insufficient memory pressure > to trigger zswap writeback, ultimately causing the tests to fail. I assume you've been testing on arm64 or ppc? > Additionally, this series addresses OOM kills occurring in test_swapin_nozswap > by dynamically scaling memory limits, and prevents spurious test failures > when zswap is built into the kernel but globally disabled.
