diff --git a/hgext/largefiles/lfutil.py b/hgext/largefiles/lfutil.py
--- a/hgext/largefiles/lfutil.py
+++ b/hgext/largefiles/lfutil.py
@@ -110,7 +110,9 @@ def findfile(repo, hash):
         repo.ui.note(_('Found %s in store\n') % hash)
     elif inusercache(repo.ui, hash):
         repo.ui.note(_('Found %s in system cache\n') % hash)
-        link(usercachepath(repo.ui, hash), storepath(repo, hash))
+        path = storepath(repo, hash)
+        util.makedirs(os.path.dirname(path))
+        link(usercachepath(repo.ui, hash), path)
     else:
         return None
     return storepath(repo, hash)
diff --git a/mercurial/ignore.py b/mercurial/ignore.py
--- a/mercurial/ignore.py
+++ b/mercurial/ignore.py
@@ -78,6 +78,7 @@ def ignore(root, files, warn):
             pats[f] = []
             fp = open(f)
             pats[f], warnings = ignorepats(fp)
+            fp.close()
             for warning in warnings:
                 warn("%s: %s\n" % (f, warning))
         except IOError, inst:
diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -800,6 +800,7 @@ class revlog(object):
         readahead = max(65536, length)
         df.seek(offset)
         d = df.read(readahead)
+        df.close()
         self._addchunk(offset, d)
         if readahead > length:
             return d[:length]
diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -79,6 +79,7 @@ class ui(object):
 
         try:
             cfg.read(filename, fp, sections=sections, remap=remap)
+            fp.close()
         except error.ConfigError, inst:
             if trusted:
                 raise