Use the _btrfs_get_first_logical helper instead of open coding it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
#create an 8 block file
$XFS_IO_PROG -d -f -c "pwrite -S 0xbb -b $filesize 0 $filesize" "$SCRATCH_MNT/foobar" > /dev/null
-logical_extent=$($FILEFRAG_PROG -v "$SCRATCH_MNT/foobar" | _filter_filefrag | cut -d '#' -f 1)
+logical_extent=$(_btrfs_get_first_logical $SCRATCH_MNT/foobar)
physical_extent=$(get_physical $logical_extent)
echo "logical = $logical_extent physical=$physical_extent" >> $seqres.full