From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:32792 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935134AbcKWKdZ (ORCPT ); Wed, 23 Nov 2016 05:33:25 -0500 Date: Wed, 23 Nov 2016 18:33:23 +0800 From: Eryu Guan Subject: Re: [PATCH 1/3] generic/182: retain existing btrfs behavior when len == 0 Message-ID: <20161123103323.GG12442@eguan.usersys.redhat.com> References: <147986705412.27133.3961713804630246198.stgit@birch.djwong.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <147986705412.27133.3961713804630246198.stgit@birch.djwong.org> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: "Darrick J. Wong" Cc: david@fromorbit.com, linux-xfs@vger.kernel.org, fstests@vger.kernel.org On Tue, Nov 22, 2016 at 06:10:54PM -0800, Darrick J. Wong wrote: > Since btrfs doesn't interpret len=0 as "go to EOF", test for that instead. > > Signed-off-by: Darrick J. Wong > --- > tests/generic/182 | 3 ++- > tests/generic/182.out | 2 -- > 2 files changed, 2 insertions(+), 3 deletions(-) > > > diff --git a/tests/generic/182 b/tests/generic/182 > index f484399..dacb989 100755 > --- a/tests/generic/182 > +++ b/tests/generic/182 > @@ -1,7 +1,8 @@ > #! /bin/bash > # FS QA Test No. 182 > # > -# Test the convention that dedupe with length == 0 means "to the end of fileA" > +# Test the convention that dedupe with length == 0 doesn't mean "to the end of > +# fileA" If I read the xfs patch and btrfs RFC patch thread correctly, 0 length means do nothing, right? Should we make it more clear and specific in the comments instead of "doesn't mean..."? I think that helps people understand the test. > # - Create a file. > # - Try to dedupe "zero" bytes (which means dedupe to EOF). > # - Check that the dedupe happened. These comments need fixes too. Thanks, Eryu > diff --git a/tests/generic/182.out b/tests/generic/182.out > index 049a3ee..9841b76 100644 > --- a/tests/generic/182.out > +++ b/tests/generic/182.out > @@ -1,12 +1,10 @@ > QA output created by 182 > Create the original files > -dedupe: Extents did not match. > f4820540fc0ac02750739896fe028d56 TEST_DIR/test-182/file1 > 69ad53078a16243d98e21d9f8704a071 TEST_DIR/test-182/file2 > 69ad53078a16243d98e21d9f8704a071 TEST_DIR/test-182/file2.chk > Compare against check files > Make the original file almost dedup-able > -dedupe: Extents did not match. > f4820540fc0ac02750739896fe028d56 TEST_DIR/test-182/file1 > 158d4e3578b94b89cbb44493a2110fb9 TEST_DIR/test-182/file2 > 158d4e3578b94b89cbb44493a2110fb9 TEST_DIR/test-182/file2.chk >