.

bigfile/_bigfile.c

@@ -959,7 +959,7 @@ pyfile_dealloc(PyObject *pyfile0)
     PyBigFile  *pyfile = container_of(pyfile0, PyBigFile, pyobj);
 
     pyfile->blkmmap_ops = NULL;
-    Py_CLEAR(pyfile->blkmmapper_pycapsule);
+    Py_CLEAR(pyfile->blkmmapper);
 
     pyfile->pyobj.ob_type->tp_free(&pyfile->pyobj);
 }
@@ -994,7 +994,7 @@ pyfile_new(PyTypeObject *type, PyObject *args, PyObject *kw)
         return NULL;
     }
 
-    self->blkmmapper_pycapsule = blkmmapper;
+    self->blkmmapper  = blkmmapper;
     self->blkmmap_ops = blkmmap_ops;
 
     // FIXME "k" = unsigned long - we need size_t

bigfile/_bigfile.h

@@ -111,9 +111,9 @@ struct PyBigFile {
 
     BigFile file;
 
-    /* PyCapsule object with blkmmapper if BigFile subclass has it | NULL */
-    PyObject     *blkmmapper_pycapsule;     // XXX traverse for GC?
-    /* bigfile_ops extract from ^^^ capsule | NULL */
+    /* blkmmapper is PyCapsule object with type.blkmmapper if BigFile subclass has it | NULL */
+    PyObject     *blkmmapper;
+    /* bigfile_ops extracted from ^^^ capsule | NULL */
     bigfile_ops  *blkmmap_ops;
 };
 typedef struct PyBigFile PyBigFile;