From patchwork Thu Jan 16 22:51:05 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jaegeuk Kim X-Patchwork-Id: 13942393 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9501BC02183 for ; Thu, 16 Jan 2025 22:52:14 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-3.v29.lw.sourceforge.com) by sfs-ml-3.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1tYYii-00014n-V1; Thu, 16 Jan 2025 22:52:12 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-3.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1tYYiQ-00014L-RS for linux-f2fs-devel@lists.sourceforge.net; Thu, 16 Jan 2025 22:51:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:Message-ID: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=2FsGALEjYhtqoMx8qeWvtclhZjPfsavkCHOkOge7UTg=; b=BabzgV7gsP1ddcME8Q6m+/POEE oK5ShDBcS+mjoiN+N4eXd7fi1Fx5Jb/0aKAdf/QuW+wXuwmJkYWBlEMo9dgxWZEvxvM130f+GL6q3 q6d/88efWLf9yGsMRleTkWUFszD6E9MOo5ijce++1pnsAwHFbRqRDHeAoff3JwylYozc=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:Cc:To:From :Sender:Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=2FsGALEjYhtqoMx8qeWvtclhZjPfsavkCHOkOge7UTg=; b=J Zo5xrcHSMs9ulltVKsU8x8nEED+fKhvtPAcSiYO8JjvjwENw1YxdZ84dJHtvQIHUvWoXuhKn168r+ 3MFRgo3BUa4nevSpUJGjA17RcRBDtysf5hCKlQCkWNpdY9oAODb/2h6Ag1URMhc5yt1Z/ihAxbL9e yvcCiLlqtQLsRWMo=; Received: from nyc.source.kernel.org ([147.75.193.91]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1tYYiP-0000Ke-KK for linux-f2fs-devel@lists.sourceforge.net; Thu, 16 Jan 2025 22:51:54 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id ED3BAA4291A for ; Thu, 16 Jan 2025 22:49:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77550C4CED6; Thu, 16 Jan 2025 22:51:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737067907; bh=UHtiTDd6xaQRfIgQ57YquWqcElaI32LJCbCLPDMS3jQ=; h=From:To:Cc:Subject:Date:From; b=Wf+7EXGVxByE81NPI+mS3saroji8sENNnWGl+7OcH0pNIBo+B6eeueg1LOT1OHEWN 197c5Xby4hhfpm5bdqj3jw/eSfyjMC6eDtmWAx7T5Rrwg2NWMYoTBYv8A4dsTEaUkT 4nNB5yuQZjGSR+1VSXvSGpbM+YrYMkZJUFO7+I12atYudLDE04kFVYKzq3Fbdgqo1k DiPJ2JBDBLMKP3Db8h2r6SdEDiLOBPs5BDOJyzGmN1r1HZF/NdA6RJZzrEY/2EHMjI lOms0FRKTzbZ3vN6mTJfuIbhSyteTGZ3hEpi+WSeGWd/BEbYrS2SEB+ofubqwlipfH z27x371iIdsQA== To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Date: Thu, 16 Jan 2025 22:51:05 +0000 Message-ID: <20250116225143.2208852-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.48.0.rc2.279.g1de40edade-goog MIME-Version: 1.0 X-Headers-End: 1tYYiP-0000Ke-KK Subject: [f2fs-dev] [PATCH 0/2 v5 RESEND] add ioctl/sysfs to donate file-backed pages X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Jaegeuk Kim via Linux-f2fs-devel From: Jaegeuk Kim Reply-To: Jaegeuk Kim Cc: Jaegeuk Kim Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net If users clearly know which file-backed pages to reclaim in system view, they can use this ioctl() to register in advance and reclaim all at once later. Change log from v4: - fix range handling Change log from v3: - cover partial range Change log from v2: - add more boundary checks - de-register the range, if len is zero Jaegeuk Kim (2): f2fs: register inodes which is able to donate pages f2fs: add a sysfs entry to request donate file-backed pages Documentation/ABI/testing/sysfs-fs-f2fs | 7 +++ fs/f2fs/debug.c | 3 ++ fs/f2fs/f2fs.h | 14 +++++- fs/f2fs/file.c | 65 +++++++++++++++++++++++++ fs/f2fs/inode.c | 14 ++++++ fs/f2fs/shrinker.c | 27 ++++++++++ fs/f2fs/super.c | 1 + fs/f2fs/sysfs.c | 8 +++ include/uapi/linux/f2fs.h | 7 +++ 9 files changed, 145 insertions(+), 1 deletion(-)