From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:41514 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753776AbbJUIrj (ORCPT ); Wed, 21 Oct 2015 04:47:39 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t9L8lcYu013534 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 21 Oct 2015 08:47:39 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t9L8laeK012208 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Wed, 21 Oct 2015 08:47:38 GMT Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t9L8laVX011964 for ; Wed, 21 Oct 2015 08:47:36 GMT From: Anand Jain To: linux-btrfs@vger.kernel.org Subject: [RFC PATCH 3/3] btrfs-progs: kernel based default features for btrfs-convert Date: Wed, 21 Oct 2015 16:45:49 +0800 Message-Id: <1445417149-804-3-git-send-email-anand.jain@oracle.com> In-Reply-To: <1445417149-804-1-git-send-email-anand.jain@oracle.com> References: <1445417149-804-1-git-send-email-anand.jain@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: btrfs-convert convert FS with latest default features enabled, and if the kernel is down-rev and does not support a latest feature then mount fails, as expected. This patch disables default features based on the running kernel. Signed-off-by: Anand Jain --- btrfs-convert.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/btrfs-convert.c b/btrfs-convert.c index cb92020..edec09e 100644 --- a/btrfs-convert.c +++ b/btrfs-convert.c @@ -2890,7 +2890,10 @@ int main(int argc, char *argv[]) int progress = 1; char *file; char fslabel[BTRFS_LABEL_SIZE]; - u64 features = BTRFS_MKFS_DEFAULT_FEATURES; + u64 features; + + features = btrfs_features_allowed_by_kernel(); + features &= BTRFS_MKFS_DEFAULT_FEATURES; while(1) { enum { GETOPT_VAL_NO_PROGRESS = 256 }; -- 2.4.1