On Wed, Mar 04, 2015 at 06:37:24PM +0200, Boaz Harrosh wrote:
> From: Yigal Korman <yigal@xxxxxxxxxxxxx>
>
> 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.
This is a lot more complex than it needs to be - xfs_io does
everything we already need, so the test really just needs to
follow the template set out by generic/309. i.e:
# pattern the file.
$XFS_IO_PROG -f -c "pwrite 0 64k" -c fsync $testfile | _filter_xfs_io
# sample timestamps.
mtime1=`stat -c %Y $testfile`
ctime1=`stat -c %Z $testfile`
# map read followed by map write to trigger timestamp change
sleep 2
$XFS_IO_PROG -c "mmap 0 64k" -c "mread 0 64k" -c "mwrite 0 4k" $testfile |_filter_xfs_io
# sample and check timestamps have changed.
mtime2=`stat -c %Y $testsfile`
ctime2=`stat -c %Z $testsfile`
if [ "$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
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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