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From: Boaz Harrosh <boaz@plexistor.com>
To: Dave Chinner <david@fromorbit.com>,
	Matthew Wilcox <matthew.r.wilcox@intel.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Jan Kara <jack@suse.cz>, Hugh Dickins <hughd@google.com>,
	Mel Gorman <mgorman@suse.de>,
	linux-mm@kvack.org, linux-nvdimm <linux-nvdimm@ml01.01.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Eryu Guan <eguan@redhat.com>
Subject: [PATCH v4] xfstest: generic/080 test that mmap-write updates c/mtime
Date: Mon, 23 Mar 2015 14:56:43 +0200	[thread overview]
Message-ID: <55100D8B.90409@plexistor.com> (raw)
In-Reply-To: <55100B78.501@plexistor.com>

From: Dave Chinner <dchinner@redhat.com>

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 <omzg@plexistor.com>
Tested-by: Boaz Harrosh <boaz@plexistor.com>
Signed-off-by: Omer Zilberberg <omzg@plexistor.com>
Signed-off-by: Boaz Harrosh <boaz@plexistor.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
---
 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

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  parent reply	other threads:[~2015-03-23 12:56 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-23 12:47 [PATCH 0/3 v3] dax: Fix mmap-write not updating c/mtime Boaz Harrosh
2015-03-23 12:47 ` Boaz Harrosh
2015-03-23 12:49 ` [PATCH 1/3] mm: New pfn_mkwrite same as page_mkwrite for VM_PFNMAP Boaz Harrosh
2015-03-23 22:49   ` Andrew Morton
2015-03-23 22:49     ` Andrew Morton
2015-03-23 12:52 ` [PATCH 2/3] dax: use pfn_mkwrite to update c/mtime + freeze protection Boaz Harrosh
2015-03-23 12:54 ` [PATCH 3/3] RFC: dax: dax_prepare_freeze Boaz Harrosh
2015-03-23 22:40   ` Dave Chinner
2015-03-23 22:40     ` Dave Chinner
2015-03-24  6:14     ` Boaz Harrosh
2015-03-24  6:14       ` Boaz Harrosh
2015-03-25  2:22       ` Dave Chinner
2015-03-25  2:22         ` Dave Chinner
2015-03-25  8:10         ` Boaz Harrosh
2015-03-25  9:29           ` Dave Chinner
2015-03-25  9:29             ` Dave Chinner
2015-03-25 10:19             ` Boaz Harrosh
2015-03-25 10:19               ` Boaz Harrosh
2015-03-25 20:00               ` Dave Chinner
2015-03-25 20:00                 ` Dave Chinner
2015-03-26  8:02                 ` Boaz Harrosh
2015-03-26 20:58                   ` Dave Chinner
2015-03-26 20:58                     ` Dave Chinner
2015-03-24 12:37   ` Boaz Harrosh
2015-03-24 12:37     ` Boaz Harrosh
2015-03-25  2:26     ` Dave Chinner
2015-03-25  2:26       ` Dave Chinner
2015-03-25  8:31       ` Boaz Harrosh
2015-03-25  8:31         ` Boaz Harrosh
2015-03-25  9:41         ` Dave Chinner
2015-03-25  9:41           ` Dave Chinner
2015-03-25 10:40           ` Boaz Harrosh
2015-03-25 10:40             ` Boaz Harrosh
2015-03-25 20:05             ` Dave Chinner
2015-03-25 20:05               ` Dave Chinner
2015-03-23 12:56 ` Boaz Harrosh [this message]
  -- strict thread matches above, loose matches on Subject: below --
2015-03-04 16:33 [PATCH 0/3] DAX: Fix mmap-write not updating c/mtime Boaz Harrosh
2015-03-04 16:37 ` [PATCH 1/3] xfstests: generic/080 test that mmap-write updates c/mtime Boaz Harrosh
2015-03-05  0:13   ` Dave Chinner
2015-03-19  9:53     ` [PATCH 1/3 v2 resend] xfstest: " Boaz Harrosh
2015-03-19 10:44       ` Eryu Guan
2015-03-19 11:46         ` [PATCH v3] " Boaz Harrosh
2015-03-19 15:30           ` Eryu Guan
2015-03-19 15:58             ` [PATCH v4] " Boaz Harrosh

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