From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9F74C43381 for ; Wed, 13 Mar 2019 05:36:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 996B7217F5 for ; Wed, 13 Mar 2019 05:36:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="avRq/c2r" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726528AbfCMFgK (ORCPT ); Wed, 13 Mar 2019 01:36:10 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:57334 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726184AbfCMFgK (ORCPT ); Wed, 13 Mar 2019 01:36:10 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x2D5TWPX124775 for ; Wed, 13 Mar 2019 05:36:09 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id; s=corp-2018-07-02; bh=rBwNjtxbSBNXWJIfuzknC24UQMw0nC9pwB8519STSjY=; b=avRq/c2rNX13RoHKVaUXqGkfK0LNyv0xzgVgOO5MpBU5kCHZOtGZ/Qi72S7y4IHJW+6O qkgru1H+X0wp94lyx5YROa2gAsFWQixkRXd2hW8MtOYqUBSVoFhP2DN8nEbF0yADEajI bJV/YtUNo4bJGmyGOBRJbuLtG7IZN2nLIZm6CUYFeJZqzKEOXpREbc+tJwnYiRX8f/uS 0PKAgeumai/etcUmM1ZEP++phWwR16TKwuxRrVXeyjscZKSbaKN1lPdt9BL0RMzrFvmc oSWPYOSgDLt6d6yiG272K0dKuwMZ7x7oEAzrPN4L55Jw7Je0o2Fb6808USPiuVS9calt xA== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp2130.oracle.com with ESMTP id 2r430es4hd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 13 Mar 2019 05:36:08 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x2D5a8i7022612 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 13 Mar 2019 05:36:08 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x2D5a86w014837 for ; Wed, 13 Mar 2019 05:36:08 GMT Received: from tpasj.wifi.oracle.com (/192.188.170.109) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 12 Mar 2019 22:36:08 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Subject: [PATCH 1/2] btrfs: fix zstd compression parameter Date: Wed, 13 Mar 2019 13:36:18 +0800 Message-Id: <1552455379-2311-1-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 1.8.3.1 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9193 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903130039 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org We let to pass zstd compression parameter even if its not fully written. For example: btrfs prop set /btrfs compression zst btrfs prop get /btrfs compression compression=zst zlib and lzo are fine. Fix it by using the expected number of char in strncmp(). Signed-off-by: Anand Jain --- fs/btrfs/props.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c index 8577ea1d4e2b..ef6502a94712 100644 --- a/fs/btrfs/props.c +++ b/fs/btrfs/props.c @@ -306,7 +306,7 @@ static int prop_compression_apply(struct inode *inode, const char *value, btrfs_set_fs_incompat(fs_info, COMPRESS_LZO); } else if (!strncmp("zlib", value, 4)) { type = BTRFS_COMPRESS_ZLIB; - } else if (!strncmp("zstd", value, len)) { + } else if (!strncmp("zstd", value, 4)) { type = BTRFS_COMPRESS_ZSTD; btrfs_set_fs_incompat(fs_info, COMPRESS_ZSTD); } else { -- 1.8.3.1