--- sys/mips/mips/vm_machdep.c	(revision 197582)
+++ sys/mips/mips/vm_machdep.c	(local)
@@ -52,6 +52,7 @@
 #include <sys/sysctl.h>
 #include <sys/unistd.h>
 
+#include <machine/cache.h>
 #include <machine/clock.h>
 #include <machine/cpu.h>
 #include <machine/md_var.h>
@@ -473,6 +474,7 @@
 				TAILQ_REMOVE(&sf_buf_freelist, sf, free_entry);
 				nsfbufsused++;
 				nsfbufspeak = imax(nsfbufspeak, nsfbufsused);
+				mips_dcache_wbinv_range_index(sf->kva, PAGE_SIZE);
 			}
 			goto done;
 		}