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Tue, 24 Mar 2026 23:17:45 -0700 (PDT) X-Received: by 2002:a05:6a00:4489:b0:82a:899b:d804 with SMTP id d2e1a72fcca58-82c6dfa883cmr2410518b3a.38.1774419465494; Tue, 24 Mar 2026 23:17:45 -0700 (PDT) Received: from redhat.com ([209.132.188.88]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82b03bbebb2sm15843054b3a.14.2026.03.24.23.17.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2026 23:17:44 -0700 (PDT) Date: Wed, 25 Mar 2026 14:17:42 +0800 From: Li Wang To: Yosry Ahmed Cc: Andrew Morton , longman@redhat.com, yosryahmed@google.com, nphamcs@gmail.com, hannes@cmpxchg.org, mhocko@kernel.org, mkoutny@suse.com, muchun.song@linux.dev, tj@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v4 0/7] selftests/cgroup: improve zswap tests robustness and support large page sizes Message-ID: References: <20260322061038.156146-1-liwang@redhat.com> <20260322091851.e965d3a2f0d6af5bd985407f@linux-foundation.org> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: qO0a042_jKdymaQ7r3JQilENvzjl8fd9W8NtWfgZQOE_1774419466 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Server: rspam12 X-Stat-Signature: hu6ezu6wi36uokah63rm5koxy7oo9nxc X-Rspamd-Queue-Id: 112AB1A0002 X-Rspam-User: X-HE-Tag: 1774419468-863612 X-HE-Meta: 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 wjsnWDxA MJWNCPGCx/dMwHWbj9JfdEqaWZVQbrHxYW2C///E24LBGx10R4BfZoXqPZ5pYjrObVY6AT+pQfEbTP0ObhNfTd0YHZ3kfqePepRVxpLiHzlKAuRi8uDdmmD6KlQwFIFR2kfUo3GZNDwz1TWas4fO+sVggRTYYZTZoV3HG3uC+FDqttHSnIVbk8a7DWqV34QHuXh364zms9Wezyn/MlbHwY6RPlSuNMi01hGjzZlTOKi20Yjhj9cD8ZXVWjtMWSyFj5eoKaa06AWH7/aErwYZbVs80PUim4lp7Ghq4K8PAI25ci2qB4WQhwnUf3b5mioiCppyqyy0WjWhlsv5mGMDkfgt/egTnoXZ8nBo5bcEbALBtg5qjYT+GEQZfWQsGEGdMA5nDmcxmiOd3wYA6cwlouYWcskz/IMClncLf7B6Bqo73q54= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > In summary, the problem is that 'zswpwb' does not update when zswap is executed > under the zstd algorithm. I'd debugging this issue separately from the kernel side. I forgot to mention, this issue only observed on systems with a 64K pagesize (ppc64le, aarch64). I changed the aarch64 page size to 4K, and it passed the test every time. -- Regards, Li Wang