diff --git a/poky/scripts/lib/recipetool/create.py b/poky/scripts/lib/recipetool/create.py
index 8d78c5b..566c753 100644
--- a/poky/scripts/lib/recipetool/create.py
+++ b/poky/scripts/lib/recipetool/create.py
@@ -66,7 +66,7 @@
         libdir = d.getVar('libdir')
         base_libdir = d.getVar('base_libdir')
         libpaths = list(set([base_libdir, libdir]))
-        libname_re = re.compile('^lib(.+)\.so.*$')
+        libname_re = re.compile(r'^lib(.+)\.so.*$')
         pkglibmap = {}
         for lib, item in shlib_providers.items():
             for path, pkg in item.items():
@@ -428,7 +428,7 @@
 
     if scriptutils.is_src_url(source):
         # Warn about github archive URLs
-        if re.match('https?://github.com/[^/]+/[^/]+/archive/.+(\.tar\..*|\.zip)$', source):
+        if re.match(r'https?://github.com/[^/]+/[^/]+/archive/.+(\.tar\..*|\.zip)$', source):
             logger.warning('github archive files are not guaranteed to be stable and may be re-generated over time. If the latter occurs, the checksums will likely change and the recipe will fail at do_fetch. It is recommended that you point to an actual commit or tag in the repository instead (using the repository URL in conjunction with the -S/--srcrev option).')
         # Fetch a URL
         fetchuri = reformat_git_uri(urldefrag(source)[0])
@@ -830,7 +830,7 @@
         elif line.startswith('PV = '):
             if realpv:
                 # Replace the first part of the PV value
-                line = re.sub('"[^+]*\+', '"%s+' % realpv, line)
+                line = re.sub(r'"[^+]*\+', '"%s+' % realpv, line)
         lines_before.append(line)
 
     if args.also_native:
@@ -1066,8 +1066,8 @@
     import oe.utils
 
     # Note: these are carefully constructed!
-    license_title_re = re.compile('^\(?(#+ *)?(The )?.{1,10} [Ll]icen[sc]e( \(.{1,10}\))?\)?:?$')
-    license_statement_re = re.compile('^(This (project|software) is( free software)? (released|licen[sc]ed)|(Released|Licen[cs]ed)) under the .{1,10} [Ll]icen[sc]e:?$')
+    license_title_re = re.compile(r'^\(?(#+ *)?(The )?.{1,10} [Ll]icen[sc]e( \(.{1,10}\))?\)?:?$')
+    license_statement_re = re.compile(r'^(This (project|software) is( free software)? (released|licen[sc]ed)|(Released|Licen[cs]ed)) under the .{1,10} [Ll]icen[sc]e:?$')
     copyright_re = re.compile('^(#+)? *Copyright .*$')
 
     crunched_md5sums = {}
diff --git a/poky/scripts/lib/wic/filemap.py b/poky/scripts/lib/wic/filemap.py
index c53147c..4d9da28 100644
--- a/poky/scripts/lib/wic/filemap.py
+++ b/poky/scripts/lib/wic/filemap.py
@@ -142,15 +142,6 @@
 
         raise Error("the method is not implemented")
 
-    def block_is_unmapped(self, block): # pylint: disable=W0613,R0201
-        """
-        This method has has to be implemented by child classes. It returns
-        'True' if block number 'block' of the image file is not mapped (hole)
-        and 'False' otherwise.
-        """
-
-        raise Error("the method is not implemented")
-
     def get_mapped_ranges(self, start, count): # pylint: disable=W0613,R0201
         """
         This method has has to be implemented by child classes. This is a
@@ -164,15 +155,6 @@
 
         raise Error("the method is not implemented")
 
-    def get_unmapped_ranges(self, start, count): # pylint: disable=W0613,R0201
-        """
-        This method has has to be implemented by child classes. Just like
-        'get_mapped_ranges()', but yields unmapped block ranges instead
-        (holes).
-        """
-
-        raise Error("the method is not implemented")
-
 
 # The 'SEEK_HOLE' and 'SEEK_DATA' options of the file seek system call
 _SEEK_DATA = 3
@@ -265,15 +247,10 @@
                         % (block, result))
         return result
 
-    def block_is_unmapped(self, block):
-        """Refer the '_FilemapBase' class for the documentation."""
-        return not self.block_is_mapped(block)
-
     def _get_ranges(self, start, count, whence1, whence2):
         """
-        This function implements 'get_mapped_ranges()' and
-        'get_unmapped_ranges()' depending on what is passed in the 'whence1'
-        and 'whence2' arguments.
+        This function implements 'get_mapped_ranges()' depending
+        on what is passed in the 'whence1' and 'whence2' arguments.
         """
 
         assert whence1 != whence2
@@ -303,12 +280,6 @@
                         % (start, count, start + count - 1))
         return self._get_ranges(start, count, _SEEK_DATA, _SEEK_HOLE)
 
-    def get_unmapped_ranges(self, start, count):
-        """Refer the '_FilemapBase' class for the documentation."""
-        self._log.debug("FilemapSeek: get_unmapped_ranges(%d,  %d(%d))"
-                        % (start, count, start + count - 1))
-        return self._get_ranges(start, count, _SEEK_HOLE, _SEEK_DATA)
-
 
 # Below goes the FIEMAP ioctl implementation, which is not very readable
 # because it deals with the rather complex FIEMAP ioctl. To understand the
@@ -422,10 +393,6 @@
                         % (block, result))
         return result
 
-    def block_is_unmapped(self, block):
-        """Refer the '_FilemapBase' class for the documentation."""
-        return not self.block_is_mapped(block)
-
     def _unpack_fiemap_extent(self, index):
         """
         Unpack a 'struct fiemap_extent' structure object number 'index' from
@@ -502,23 +469,28 @@
                         % (first_prev, last_prev))
         yield (first_prev, last_prev)
 
-    def get_unmapped_ranges(self, start, count):
+class FilemapNobmap(_FilemapBase):
+    """
+    This class is used when both the 'SEEK_DATA/HOLE' and FIEMAP are not
+    supported by the filesystem or kernel.
+    """
+
+    def __init__(self, image, log=None):
         """Refer the '_FilemapBase' class for the documentation."""
-        self._log.debug("FilemapFiemap: get_unmapped_ranges(%d,  %d(%d))"
+
+        # Call the base class constructor first
+        _FilemapBase.__init__(self, image, log)
+        self._log.debug("FilemapNobmap: initializing")
+
+    def block_is_mapped(self, block):
+        """Refer the '_FilemapBase' class for the documentation."""
+        return True
+
+    def get_mapped_ranges(self, start, count):
+        """Refer the '_FilemapBase' class for the documentation."""
+        self._log.debug("FilemapNobmap: get_mapped_ranges(%d,  %d(%d))"
                         % (start, count, start + count - 1))
-        hole_first = start
-        for first, last in self._do_get_mapped_ranges(start, count):
-            if first > hole_first:
-                self._log.debug("FilemapFiemap: yielding range (%d, %d)"
-                                % (hole_first, first - 1))
-                yield (hole_first, first - 1)
-
-            hole_first = last + 1
-
-        if hole_first < start + count:
-            self._log.debug("FilemapFiemap: yielding range (%d, %d)"
-                            % (hole_first, start + count - 1))
-            yield (hole_first, start + count - 1)
+        yield (start, start + count -1)
 
 def filemap(image, log=None):
     """
@@ -533,7 +505,10 @@
     try:
         return FilemapFiemap(image, log)
     except ErrorNotSupp:
-        return FilemapSeek(image, log)
+        try:
+            return FilemapSeek(image, log)
+        except ErrorNotSupp:
+            return FilemapNobmap(image, log)
 
 def sparse_copy(src_fname, dst_fname, skip=0, seek=0,
                 length=0, api=None):