From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boaz Harrosh Subject: [PATCH v4] xfstest: generic/080 test that mmap-write updates c/mtime Date: Mon, 23 Mar 2015 14:56:43 +0200 Message-ID: <55100D8B.90409@plexistor.com> References: <55100B78.501@plexistor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: Dave Chinner , Matthew Wilcox , Andrew Morton , "Kirill A. Shutemov" , Jan Kara , Hugh Dickins , Mel Gorman , linux-mm@kvack.org, linux-nvdimm , linux-fsdevel , Eryu Guan Return-path: In-Reply-To: <55100B78.501@plexistor.com> Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.org From: Dave Chinner when using mmap() for file i/o, writing to the file should update it's c/mtime. Specifically if we first mmap-read from a page, then memap-write to the same page. This test was failing for the initial submission of DAX because pfn based mapping do not have an page_mkwrite called for them. The new Kernel patches that introduce pfn_mkwrite fixes this test. Written by Dave Chinner but edited and tested by: Omer Zilberberg Dave hands-up man, it looks like you edited this directly in the email, but there was not even a single typo. Tested-by: Omer Zilberberg Tested-by: Boaz Harrosh Signed-off-by: Omer Zilberberg Signed-off-by: Boaz Harrosh Reviewed-by: Eryu Guan --- tests/generic/080 | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/080.out | 2 ++ tests/generic/group | 1 + 3 files changed, 81 insertions(+) create mode 100755 tests/generic/080 create mode 100644 tests/generic/080.out diff --git a/tests/generic/080 b/tests/generic/080 new file mode 100755 index 0000000..43c93d7 --- /dev/null +++ b/tests/generic/080 @@ -0,0 +1,78 @@ +#! /bin/bash +# FS QA Test No. 080 +# +# Verify that mtime is updated when writing to mmap-ed pages +# +#----------------------------------------------------------------------- +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- +# + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=0 +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -f $tmp.* + rm -f $testfile +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +# real QA test starts here +_supported_fs generic +_supported_os IRIX Linux +_require_test + +echo "Silence is golden." +rm -f $seqres.full + +# pattern the file. +testfile=$TEST_DIR/mmap_mtime_testfile +$XFS_IO_PROG -f -c "pwrite 0 4k" -c fsync $testfile >> $seqres.full + +# sample timestamps. +mtime1=`stat -c %Y $testfile` +ctime1=`stat -c %Z $testfile` +echo "before mwrite: $mtime1 $ctime1" >> $seqres.full + +# map read followed by map write to trigger timestamp change +sleep 2 +$XFS_IO_PROG -c "mmap 0 4k" -c "mread 0 4k" -c "mwrite 0 4k" $testfile \ + >> $seqres.full + +# sample and verify that timestamps have changed. +mtime2=`stat -c %Y $testfile` +ctime2=`stat -c %Z $testfile` +echo "after mwrite : $mtime2 $ctime2" >> $seqres.full + +if [ "$mtime1" == "$mtime2" ]; then + echo "mtime not updated" + let status=$status+1 +fi +if [ "$ctime1" == "$ctime2" ]; then + echo "ctime not updated" + let status=$status+1 +fi + +exit diff --git a/tests/generic/080.out b/tests/generic/080.out new file mode 100644 index 0000000..cccac52 --- /dev/null +++ b/tests/generic/080.out @@ -0,0 +1,2 @@ +QA output created by 080 +Silence is golden. diff --git a/tests/generic/group b/tests/generic/group index d56d3ce..8154401 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -79,6 +79,7 @@ 077 acl attr auto enospc 078 auto quick metadata 079 acl attr ioctl metadata auto quick +080 auto quick 083 rw auto enospc stress 088 perms auto quick 089 metadata auto -- 1.9.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org