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Tue, 06 Jan 2026 18:22:45 -0800 (PST) Received: from google.com ([2a00:79e0:2031:6:9f6a:2617:8891:93ff]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-819c5edc5e8sm3255185b3a.65.2026.01.06.18.22.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jan 2026 18:22:44 -0800 (PST) Date: Wed, 7 Jan 2026 11:22:40 +0900 From: Sergey Senozhatsky To: Sergey Senozhatsky Cc: Yosry Ahmed , Andrew Morton , Nhat Pham , Minchan Kim , Johannes Weiner , Brian Geffon , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] zsmalloc: use actual object size to detect spans Message-ID: References: <20260106042507.2579150-1-senozhatsky@chromium.org> <5smqbald5bollibqjsvqw2tfngdoiiucurikdgqtz6xjb7u7vz@7p6hskoixaak> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 71EDB1C0008 X-Stat-Signature: nzjsuqkmu3exke3gfqfoestzfot58o7p X-Rspam-User: X-HE-Tag: 1767752566-656185 X-HE-Meta: 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 O24EeV96 cFpQ4nd4qYbkHRkKq2hXAqVDcW8A2HqxdwMTlZv/0muKvZDXuVh5tAeZbeAYgJ6LQGHBkp+x5l19aDF93yOJVAxNn6NAriY8/HPoyPX46O+5u4NFc9O238/JyUnZu78h2Sop/4e621SF4Vry6uXPT+4z1rsm32Z2F1iecB0Uq2MEQfEHK+v/ELOFLsuRFRNnxI8TC3u6IUbDGEOG0o5X9Jkn6KcromQCAJsoaXA2gxbf4+q9C4tZx6bMZM/q+fDmUZHsgk7XSGFlOo+Vb2G3OKM4bfYKqjgJkxl2sZK/a5yLTlxEZ85ZAF0R1sEW6sWTyVDXY8IApzPGjKtcbcdrYUiBC37p86NvvcwMyS0duBTUr6NI= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On (26/01/07 11:20), Sergey Senozhatsky wrote: > It seems there is no second page, it's a pow-of-two size class Oh, class 48. That's certainly not quite pow of 2...