From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f52.google.com (mail-ot1-f52.google.com [209.85.210.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F1EB19F117 for ; Tue, 3 Sep 2024 03:36:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725334566; cv=none; b=oV7sPxSMhcyqDu/7wcHuPdqCC46cCGELPZ5j/fDAiMhLKpOkgRTs6LOvCm3ZccFyUpT+nn7cBBu/e0DP3ctnXdpX8lf4ghdGeujLMmCsMmNjWhcMUY5nS2nENU8207lh366cP5Qt14qPCIldln6BrOQlqIbNBnmzpkUly9xTlCg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725334566; c=relaxed/simple; bh=NiMtLlFnkdfLxPBx7JS2haAmDgO+zdyW+0/G81NPoJs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Kiqat14/6hDIpSr7t0uz487rq5y9+i+cKSQL2AubSIs2Pb4E3wOZI57klqYIbUy1G7N9hbUeiATXIWKz31UTfXuK26LwfJskZZFpLHdogiCKLMchVMjyRVvMhRAFe8msUKHq7TFhIPxgb/tB7QdXa3lC6Lu5d+ty49sTA3EjhO4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=eMYR+kMk; arc=none smtp.client-ip=209.85.210.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="eMYR+kMk" Received: by mail-ot1-f52.google.com with SMTP id 46e09a7af769-70f6e65d605so1845976a34.3 for ; Mon, 02 Sep 2024 20:36:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1725334564; x=1725939364; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=Klasp/Czx5gKvCLsN/XwjCayc6V+YjKtJvEKsuKTZUA=; b=eMYR+kMk8jmHxllOkIBbQAoRqwlCdxeN2+fGiBD+0YZ6SlY60M3ixqfgZs+HKJKNFm d733eejUnx07Ga0FQ9aVG/0APUZn9U3nwzZZkN0DKiX+VXpR61khIgLJFr0nwvmjGzud G791qH08L2tcJVqkEqbEBFT8CbOJsiPM32awE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725334564; x=1725939364; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Klasp/Czx5gKvCLsN/XwjCayc6V+YjKtJvEKsuKTZUA=; b=SyrDhehwiAK9VxE8lqSmhFd6g5cZEdgYqBfE9kmdxagX3FWPMwaMGKgrrACo6t+ZLl HqaHU/kuKsSv1M8L5s7M84/DoMsKUb/lSucx+dckHRDDwwcfnyiiKmaXuXhEHm4gPwrC SYk5+11ksEW68eXOVfuHuxY/mmAF5QnUnr7myhpFZQhw8L3eHK6P9LDSCQ0sW+RkvOkE v2Nmjj/6UikS3PM4wpamUByalKfFPKiNSbQWos429nF4Kv10+r0KptTfd+uX9zVLA/bO lxvjZ8D+E+FQiyg5YNqg2gGm/I0cSdPiH0PWTUC9deRcQoNvrp0R1XrNt6Ec0Y773lAS 8mnQ== X-Forwarded-Encrypted: i=1; AJvYcCU52nG/ZswXvtV0OwoX/6REYcCa3Isr2QCsMZz+DCv8aEffEl+3AhDNEbJ4mndRvSKSosqOSq5ETiDnSfE=@vger.kernel.org X-Gm-Message-State: AOJu0Ywb50TqS9e1CFRbUDbTlR0mAbfIsVa/ho4Q69ACDHKNJPhx02eT KrA2vE34GID0NFxv3eTg8LY2uASEficxzZxIXppJpUQEHlhjpn3p9CrPvxC5Ug== X-Google-Smtp-Source: AGHT+IFjRxHk7r+spqGR7hy3xIQRgf7Svjbf7lCDDkoX9gzy/soMn2SzNycNOfOVBKuUD5oxaEPydA== X-Received: by 2002:a05:6830:7193:b0:709:44dc:dde7 with SMTP id 46e09a7af769-70f5c3ba541mr17684052a34.9.1725334564354; Mon, 02 Sep 2024 20:36:04 -0700 (PDT) Received: from google.com ([2401:fa00:8f:203:43a1:71e3:7464:e91b]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-715e569dccesm7525006b3a.136.2024.09.02.20.36.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Sep 2024 20:36:04 -0700 (PDT) Date: Tue, 3 Sep 2024 12:35:58 +0900 From: Sergey Senozhatsky To: alexs@kernel.org Cc: Vitaly Wool , Miaohe Lin , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, minchan@kernel.org, willy@infradead.org, senozhatsky@chromium.org, david@redhat.com, 42.hyeyoo@gmail.com, Yosry Ahmed , nphamcs@gmail.com Subject: Re: [PATCH v7 00/21] mm/zsmalloc: add zpdesc memory descriptor for zswap.zpool Message-ID: <20240903033558.GC9738@google.com> References: <20240902072136.578720-1-alexs@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240902072136.578720-1-alexs@kernel.org> On (24/09/02 15:21), alexs@kernel.org wrote: > The descriptor still overlays the struct page; nothing has changed > in that regard. > [..] > This patachset does not increase the descriptor size nor introduce any > functional changes, and could save about 122Kbytes zsmalloc.o size. Is this number accurate? Where does such a large saving come from?