From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE854132C38 for ; Wed, 15 Jan 2025 22:18:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736979499; cv=none; b=nYqe+uGEr9Si7D4KbojGf1SQJlOH5yYQ3z7FE+5CKJSwNnGrRQboXfG1cbfwoMWYZpYgh894MKBaSWDXP3lWT/qgszdf72DpV3JEDA3dHDo1A0LV8JNVv+XYz4buRiTpeKcuj7pVj/qxbrcamYPqnADBbVn9msgokIJdGIVwUzo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736979499; c=relaxed/simple; bh=4kIsyU5rXlE9mJi6lc1dgFWaOsh3YjfD1MJ8YxXEfHE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=TkFu6Zd1cR7iZI/QmeIBXBVT5ClQ6DNnI4G5mPN3SJ0OAU+0cMqBTKTgGWa1zWucrTY9fOyRk0vjNqf/4FgdFwRTQ9dBZ3on4R9xPbbMgAsqYWLNXTWfEP4gXjHuoVVfvGT+W8U7dQh67tu0nq2ncJN933CmuD35IQDtXeVCqg4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CiZhLZis; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CiZhLZis" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72980C4CED1; Wed, 15 Jan 2025 22:18:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736979499; bh=4kIsyU5rXlE9mJi6lc1dgFWaOsh3YjfD1MJ8YxXEfHE=; h=From:To:Cc:Subject:Date:From; b=CiZhLZis9cbUuPEn8ToQCFY/JaNvClQNwvbK2d/zIc9vZGLzhUgzL6DZnInE+BJ65 /NEqory891caawzwM6y1dB2Ow6YNB/Y0JqFaRXtqz0yJCV1UaJNdqX28wQNb8SU6TA XqGeq5XGNVY1Bh1SdenM+favpDOPr+RB21vgja3U0K1VUvPoXyDWrqGNszsBKNPSKs G70loWi5s+3uI9jIPi1nNuxOWNb/sQOWGC70B2zJiTaD/iM5Aeun1oaUT676LZFFiZ j5yxBdMtvUAzNzKdNaVqmRXGhH7yht0I/WstHD8TcpgKMNa8BANEkBCnHHfctzrJ3v CfWE/m3lbndlQ== From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH 0/2 v3] add ioctl/sysfs to donate file-backed pages Date: Wed, 15 Jan 2025 22:16:50 +0000 Message-ID: <20250115221814.1920703-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.48.0.rc2.279.g1de40edade-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 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 | 64 +++++++++++++++++++++++++ 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, 144 insertions(+), 1 deletion(-) -- 2.48.0.rc2.279.g1de40edade-goog