diff --git a/include/sys/arc.h b/include/sys/arc.h
index 396144a4b..c88c31148 100644
--- a/include/sys/arc.h
+++ b/include/sys/arc.h
@@ -92,8 +92,6 @@ typedef enum arc_space_type {
 
 void arc_space_consume(uint64_t space, arc_space_type_t type);
 void arc_space_return(uint64_t space, arc_space_type_t type);
-void *arc_data_buf_alloc(uint64_t space);
-void arc_data_buf_free(void *buf, uint64_t space);
 arc_buf_t *arc_buf_alloc(spa_t *spa, int size, void *tag,
     arc_buf_contents_t type);
 arc_buf_t *arc_loan_buf(spa_t *spa, int size);
diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index 97c897d2d..75ce17436 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -1260,23 +1260,6 @@ arc_space_return(uint64_t space, arc_space_type_t type)
 	atomic_add_64(&arc_size, -space);
 }
 
-void *
-arc_data_buf_alloc(uint64_t size)
-{
-	if (arc_evict_needed(ARC_BUFC_DATA))
-		cv_signal(&arc_reclaim_thr_cv);
-	atomic_add_64(&arc_size, size);
-	return (zio_data_buf_alloc(size));
-}
-
-void
-arc_data_buf_free(void *buf, uint64_t size)
-{
-	zio_data_buf_free(buf, size);
-	ASSERT(arc_size >= size);
-	atomic_add_64(&arc_size, -size);
-}
-
 arc_buf_t *
 arc_buf_alloc(spa_t *spa, int size, void *tag, arc_buf_contents_t type)
 {