- * Verify that the number of pages requested for that buffer is smaller
- * than the number of available pages on the system. si_mem_available()
- * returns an _estimate_ of the number of available pages.
+ * Verify that there is enough free pages available on the system for
+ * the current allocation request.
+ * wrapper_check_enough_free_pages uses si_mem_available() if available
+ * and returns if there should be enough free pages based on the
+ * current estimate.