From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp2130.oracle.com ([156.151.31.86]:54274 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751831AbeB1COA (ORCPT ); Tue, 27 Feb 2018 21:14:00 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w1S2CXkD094154 for ; Wed, 28 Feb 2018 02:13:59 GMT Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2130.oracle.com with ESMTP id 2gdgpk8e46-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 28 Feb 2018 02:13:59 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w1S2Dw53014805 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Wed, 28 Feb 2018 02:13:58 GMT Received: from abhmp0009.oracle.com (abhmp0009.oracle.com [141.146.116.15]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w1S2DwFZ002715 for ; Wed, 28 Feb 2018 02:13:58 GMT From: Liu Bo To: linux-btrfs@vger.kernel.org Subject: [PATCH] Btrfs: dev-replace: skip prealloc extents when copy nocow pages Date: Tue, 27 Feb 2018 18:10:58 -0700 Message-Id: <20180228011058.23906-1-bo.li.liu@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: It doens't make sense to process prealloc extents as pages will be filled with zero when reading prealloc extents. Signed-off-by: Liu Bo --- fs/btrfs/scrub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index ec56f33..9882513 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -4480,7 +4480,8 @@ static int check_extent_to_block(struct btrfs_inode *inode, u64 start, u64 len, * move on to the next inode. */ if (em->block_start > logical || - em->block_start + em->block_len < logical + len) { + em->block_start + em->block_len < logical + len || + test_bit(EXTENT_FLAG_PREALLOC, &em->flags)) { free_extent_map(em); ret = 1; goto out_unlock; -- 2.9.4