From patchwork Tue Apr 17 19:18:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Darrick Wong X-Patchwork-Id: 899596 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=oracle.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=oracle.com header.i=@oracle.com header.b="AITNPlU+"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40QZmq1xQxz9s1d for ; Wed, 18 Apr 2018 05:19:07 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752939AbeDQTTG (ORCPT ); Tue, 17 Apr 2018 15:19:06 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:34608 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914AbeDQTTF (ORCPT ); Tue, 17 Apr 2018 15:19:05 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w3HJGbur086159; Tue, 17 Apr 2018 19:19:01 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : from : to : cc : date : message-id : mime-version : content-type : content-transfer-encoding; s=corp-2017-10-26; bh=5g678HhcHrwFz8ONENWjo7JETiHOMk58U1qMXK8PQvo=; b=AITNPlU+kAY24HsG2mCrqwNdw0U0BR2jWSvYGGBgPDttYts5wwZdZbrj6G1QWOpTVEk4 6czq72fR+tmQBhH1uO0aOiGrqkHq0aKa7sD2WKzSmGaLg3yPrDo2BtwgROXgmGFF39cB zO/5yirQh2eN8nOon188ArNkkjp9xy0MwWPPw72rU5yr9ZfY+AldS2XinCng4BKSRdW+ xBHWBSpy+DxtTbdxzUxsDovMnbf7Z8B/+N5gUAokoe+9PP45c05PGTKeeQkV/SIptYM3 diqzfWwsklZ89mhJ71T3rcoVIkJqHTMdSvm7EjFBRYrMMZ+AFlVcIZS0cL2AWsXWmo5q uA== Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp2130.oracle.com with ESMTP id 2hbamf3n0h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Apr 2018 19:19:01 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w3HJIxnx022500 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Apr 2018 19:19:00 GMT Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w3HJIxf9001358; Tue, 17 Apr 2018 19:18:59 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 17 Apr 2018 12:18:59 -0700 Subject: [PATCH 0/2] e2fprogs: block zero/discard cleanups From: "Darrick J. Wong" To: tytso@mit.edu, darrick.wong@oracle.com Cc: adilger@dilger.ca, linux-ext4@vger.kernel.org Date: Tue, 17 Apr 2018 12:18:58 -0700 Message-ID: <152399273813.4654.4884342501339028766.stgit@magnolia> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8866 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=497 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1804170167 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hi all, Here's a couple of patches that make fallocate's ZERO_RANGE the preferred implementation of unix_zeroout, and rearrange unix_zeroout and unix_discard to try fallocate first always. fallocate for block devices has existed in the kernel for a few years now, and satisfies libext2fs' requirement that reads following a zero/discard must return zeroes. The existing fallbacks for both functions are preserved. Questions? Comments? This series targets e2fsprogs 1.45. --D