From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 772CE1381F3 for ; Mon, 19 Nov 2012 20:08:25 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id E771FE0693; Mon, 19 Nov 2012 20:08:09 +0000 (UTC) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 18A4AE0676 for ; Mon, 19 Nov 2012 20:06:58 +0000 (UTC) Received: from compute3.internal (compute3.nyi.mail.srv.osa [10.202.2.43]) by gateway1.nyi.mail.srv.osa (Postfix) with ESMTP id 624BD21653 for ; Mon, 19 Nov 2012 15:06:58 -0500 (EST) Received: from frontend1.nyi.mail.srv.osa ([10.202.2.160]) by compute3.internal (MEProxy); Mon, 19 Nov 2012 15:06:58 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.co.uk; h= message-id:date:from:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; s=mesmtp; bh=SJXST0igxBSocY0h7ZC/9yEt6yw=; b=Hkadt3F0juJqSurSHmlFV6jwdNZB jkqpKQ5MnIBWpiTcHe1v2Mzh3yfp3MQa9/18eUMHPix3O8vQaD2GX7TShRboJHj8 4bGOpsH3+cc6jFYJo3+tW4efh3RezBT8OFr5acZN4f/8WHorGGJWo9oejuk1W/69 94fompjhKolIgD0= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=message-id:date:from:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding; s=smtpout; bh=SJXST0igxBSocY0h7ZC/9y Et6yw=; b=ZZyOBiwaqNvKvRT5SaSktj820CRkvxgZyryI408bvMP+vJGo6mAdXq UZyMLZM44qNYYSvltTw7Oeg2DP4RwuhSas0oX8tZ4CybYZOHJSViBw1DIyPhWD1N GWyYV048P8AeEdUnQEpPCp1BS0JtV1IQqUG3AuRX95XVrUVcIdtpg= X-Sasl-enc: MsTmyvkni+2kEzKYf0vTMIv6rGTSyvepXCmRBM5jfA7w 1353355618 Received: from [192.168.1.100] (unknown [2.28.75.239]) by mail.messagingengine.com (Postfix) with ESMTPA id EF3A48E04D3 for ; Mon, 19 Nov 2012 15:06:57 -0500 (EST) Message-ID: <50AA915D.7030405@fastmail.co.uk> Date: Mon, 19 Nov 2012 20:06:53 +0000 From: Kerin Millar User-Agent: Postbox 3.0.6 (Windows/20121031) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] zcache + frontswap + cleancache: Am I missing something? References: <50A92BFD.5020605@binarywings.net> <50AA7187.20400@fastmail.co.uk> <50AA87E7.6010806@binarywings.net> In-Reply-To: <50AA87E7.6010806@binarywings.net> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Archives-Salt: f4475401-567a-4dc5-b85b-84d66b3a5afb X-Archives-Hash: cc26ef05251a68db518c8682ae0458fc Florian Philipp wrote: > Am 19.11.2012 18:51, schrieb Kerin Millar: >> Florian Philipp wrote: >>> Hi list! >>> >>> I'm wondering about the usage of frontswap and cleancache. Now that all >>> pieces are in place in kernel-3.5, is it actually used? >>> >>> I've found references to cleancache and frontswap in several source >>> files of the kernel (ext4, swapfile, page_io, ...). >>> /sys/kernel/mm/zcache is also present but seems to indicate no usage at >>> all. Content attached below. >> It might be that you have enabled some of these options as loadable >> modules: CONFIG_ZCACHE, CONFIG_CLEANCACHE and CONFIG_FRONTSWAP. If so, >> build them directly into the kernel image instead. >> >> Cheers, >> >> --Kerin >> > > You cannot build these as modules. Anyway, I'm recompiling right now > with debugfs and configfs. Let's see if that tells me anything. > > Regards, > Florian Philipp > Ah, good to know. I know that it was possible in some older kernels - while the feature was still in staging - but it must have since been fixed. --Kerin