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Omer Zilberberg
856ff26884
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. Test adapted from a script originally written by Dave Chinner. Signed-off-by: Omer Zilberberg <omzg@plexistor.com> Signed-off-by: Boaz Harrosh <boaz@plexistor.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
79 lines
2.0 KiB
Bash
Executable File
79 lines
2.0 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 080
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#
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# Verify that mtime is updated when writing to mmap-ed pages
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#
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#-----------------------------------------------------------------------
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=0
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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rm -f $testfile
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs generic
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_supported_os IRIX Linux
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_require_test
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echo "Silence is golden."
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rm -f $seqres.full
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# pattern the file.
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testfile=$TEST_DIR/mmap_mtime_testfile
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$XFS_IO_PROG -f -c "pwrite 0 4k" -c fsync $testfile >> $seqres.full
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# sample timestamps.
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mtime1=`stat -c %Y $testfile`
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ctime1=`stat -c %Z $testfile`
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echo "before mwrite: $mtime1 $ctime1" >> $seqres.full
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# map read followed by map write to trigger timestamp change
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sleep 2
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$XFS_IO_PROG -c "mmap 0 4k" -c "mread 0 4k" -c "mwrite 0 4k" $testfile \
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>> $seqres.full
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# sample and verify that timestamps have changed.
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mtime2=`stat -c %Y $testfile`
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ctime2=`stat -c %Z $testfile`
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echo "after mwrite : $mtime2 $ctime2" >> $seqres.full
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if [ "$mtime1" == "$mtime2" ]; then
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echo "mtime not updated"
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let status=$status+1
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fi
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if [ "$ctime1" == "$ctime2" ]; then
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echo "ctime not updated"
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let status=$status+1
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fi
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exit
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