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 AA5DE86323 for ; Thu, 16 Jan 2025 04:42:48 +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=1737002568; cv=none; b=dOuNJ9ndr94gLiTWn4DmLci68Zk72DswdKiyVX91jxi7R1uNyhWWeWfWTZngtEkTLygKv8AXxMtjDhxrx3LKa8OYsiXZ+hK5m+7c5L8yP/Z6BfG2nyTnfuw7qXbrXwZWgwhB2/lBnKeS5k3OS7aEKd1ID8xGV032ZhJ4MgmzNBc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737002568; c=relaxed/simple; bh=wXFFaKVeJuADTmkChw2w9Gj1NWKnpWpmBtYn2vyGrjQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ucOKopzhKLmC159cRBsDRRSl46nM3q0m82UsRpfKak71eVum5Q0GQC4gB7f66FXRQOhfDeQUzrI59ZDqbU8eLnbgWP1gntYLjNYRX/i1tJdxFIMoysD1wekIK2P6AOVMP3G1KFtGyV37hs503TElECn/SoiG3NH4ZbsmsCIC7/Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bI5+VqQe; 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="bI5+VqQe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28731C4CED6; Thu, 16 Jan 2025 04:42:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737002568; bh=wXFFaKVeJuADTmkChw2w9Gj1NWKnpWpmBtYn2vyGrjQ=; h=From:To:Cc:Subject:Date:From; b=bI5+VqQenY4hLfbHE34MPhGI3TM156CW+dP8nz+r6Ftm4LZ4fgY8r4MKGynpqMphi SMfRPPFQ8H8fA24CmVUF6ODOmPLDC262cSrszQX+XU0LXVN3iUvlZd4HUmr6bsUMwZ en0Xl6vE+0NanhXbnZgNwilQLGZ6A5Hq47lIHbyed/rnXTRi7WuGLymaDdSXlbIMli +A5nZ01CBZR3ixa+bTFz/nO38DvGRYAMevJZSKeTMXldTjhprlhCgbh7pqLkKKC2CD y2PQfFE2qVGpPIKVeiprjydgnZdDwxyC9JvZk2flnOQr/WEftytGiODibIVPbIuIxC 3nFNiQX28ce4g== From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH 0/2 v4] add ioctl/sysfs to donate file-backed pages Date: Thu, 16 Jan 2025 04:41:59 +0000 Message-ID: <20250116044245.1995715-1-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 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(-) -- 2.48.0.rc2.279.g1de40edade-goog