From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f54.google.com (mail-lf1-f54.google.com [209.85.167.54]) (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 935DA34AAE4 for ; Tue, 23 Dec 2025 01:41:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.54 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766454091; cv=none; b=rZMvcdYQNhjBUSkgfLu1a8zzjvFn/HzsbrE6iBXTSBaIk0fviR06/NZTPVrBGX+y8QiohJdGuDULFOdPL692zg23vNTx0QK+tOU35DvsJsg3ubOby0AtNALbPDKoI4P//HYES3yELhZDZ9NDzTANV6Ur0StkPI6a5B+6q9/G98s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766454091; c=relaxed/simple; bh=Dw1tVh0CmnWqKDbnt9xHH3i4dpkMlWgLPtv4rSVZoxQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Wb1+Ru68OjCEY7d198CYqso/1y2KJ5dEqbaigI8DO+78twc6/phQpAlrVRB9uUPOFe4NUsbNxaONFIkzbIHUVlHqlxOUpBTcwGnY9ZgYDICEgs6l3YhDEzuKvZ7lfWPYOr/CCpy6E0HjrJPwxjs4ATU+e4RNb+zYnCXnUPhossI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=OfOsId7s; arc=none smtp.client-ip=209.85.167.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="OfOsId7s" Received: by mail-lf1-f54.google.com with SMTP id 2adb3069b0e04-59b25acdffbso259143e87.2 for ; Mon, 22 Dec 2025 17:41:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1766454088; x=1767058888; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Uzc2azkAT7+UZs63CJT4nkeSpZYqRpvq+hUurVd9/nU=; b=OfOsId7sIcDGQy2pTh1vUpxLeUMu89wMN8s4Lk5g1kjn6irxsnAKWeUrpNqRGyoG36 KeetWAt4xPplCAfvWllRU2qX5LiXDYmB4HICp0vluIlAJj36byf5FlO7IURPnAFcLIfz EdOrskXj59Xi4pyqUHPyuUwgjUIFaXZtWIz1k+TrIRp3q+8hANEkpNpTzlkL1uX3AgQ0 ZClbOvf3LRxSqsQg1qNBWzRHYzc57vVVkz/mG+VKQYTkkt3PAwUnDwDy8f5K8XKVszoR AeOMq3ZA8JcsAWy+d3QFwQ9mUBT9ymlXsOOpr25TL6BQd5Dr8Z9ZO80mclH1UxWOzlrI yN2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766454088; x=1767058888; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=Uzc2azkAT7+UZs63CJT4nkeSpZYqRpvq+hUurVd9/nU=; b=mczHjCJJho/bkvQtp0V3saibuqpF8V93/AAMlC0GRhvADGYoT4PdnkmX7Meja6DXBK iwRrOYjyBYeQnxi07HNdlX5FahLSDNAdgcznSx5le0GzvOdOPDVVlogQM9dvT7XqM7D4 2mZXBTwmJWB7HkO3iUuLcn7xaKbhgZArQ2dZf7qiANp4y+mt+f8q/3ohF5ESN2PlG7j+ VyKlsyiFUEMbI/1tAIoqf0peWBl65gjaCRllVEjhl7KIHIt/FDHpE3G08OSAfcJbDWzo qJab3DStrqI6SMhfSl9GBTMUU7Ui0JP4PntRouqY7d8ADcug/VQuOdMN28Hi1xeRcDFl UIFQ== X-Forwarded-Encrypted: i=1; AJvYcCUBgYFFaDIFTzDV1F9oq5lFsqA9CaMbBWW1lTb411J2NVGek+g9nEtQJ5ATJMbxX/vDvNF699baw17B@vger.kernel.org X-Gm-Message-State: AOJu0Yymn33i3c1AuBxjgUfnTDtGgpl+EGJvPOjKTTqSv00lRRHh1jVm 3X5XDToTwKizcZIDVIz3KTG80ja5Ds53k7wtkaPjoAxBCIBxYF0QUhuY X-Gm-Gg: AY/fxX6lDS3fvhMwwf1iz2qIfII+mgbLjS4Wla6mQy51NA0eVk05hagCQJr26Npp7Xh PZn2SUyweBE4a3UEmAoMZIeyjrB1gGWi1A8caC8l4RtZFHEtMt6oNqVBEeAZavcWk+US4Ng28QK FnWHfV6jOxwocAaRYzksggXLixaC9Jh+6Pp7veQfmhBW8dUu+ATIHlgH0MyocnbqUHVOv2p06Jv 160KG6MLMLaP/A/3cL+VYrxofyPrUwzMy7aYYvn6q3rJ3f5Ez7zIYkGqbFZFOCs4OwOKo9XSTcJ NdbLnfsahryZME1D1Hly7fUdapiubVcOt2H3jIwZBcoPr/yNZRTMcVZdSJ/JiH10EeGjUnCYPsd aL00/IZ0EPyvwm7YpJPKSOa+oAn69bIMNooF5Z46GMmfPGNC3Di7HzfgTWyNBv4z8/LIKShTpKu m9L+RXgIR4 X-Google-Smtp-Source: AGHT+IHWUix04V1tUMjJhj8LmwIJFsrYjMJ2eegt/yizChdKwHOARh8H0MmDtl7KvKnzF0od4dTcxA== X-Received: by 2002:a05:6512:234b:b0:59a:123e:69ab with SMTP id 2adb3069b0e04-59a17d08c20mr4858078e87.10.1766454087534; Mon, 22 Dec 2025 17:41:27 -0800 (PST) Received: from localhost ([194.190.17.114]) by smtp.gmail.com with UTF8SMTPSA id 2adb3069b0e04-59a185d5ea6sm3600776e87.5.2025.12.22.17.41.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Dec 2025 17:41:27 -0800 (PST) From: Askar Safin To: gmazyland@gmail.com Cc: Dell.Client.Kernel@dell.com, dm-devel@lists.linux.dev, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-crypto@vger.kernel.org, linux-lvm@lists.linux.dev, linux-mm@kvack.org, linux-pm@vger.kernel.org, linux-raid@vger.kernel.org, lvm-devel@lists.linux.dev, mpatocka@redhat.com, pavel@ucw.cz, rafael@kernel.org Subject: Re: [RFC PATCH 2/2] swsusp: make it possible to hibernate to device mapper devices Date: Tue, 23 Dec 2025 04:41:14 +0300 Message-ID: <20251223014114.2193668-1-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <86300955-72e4-42d5-892d-f49bdf14441e@gmail.com> References: <86300955-72e4-42d5-892d-f49bdf14441e@gmail.com> Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Milan Broz : > Anyway, my understanding is that all device-mapper targets use mempools, > which should ensure that they can process even under memory pressure. Also, I don't understand how mempools help here. As well as I understand, allocation from mempool is still real allocation if mempool's own reserve is over. -- Askar Safin