diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index a5d37bf333..627cfebdf9 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -668,7 +668,7 @@ dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
 	dmu_buf_rele_array(dbp, numbufs, FTAG);
 }
 
-#if defined(_KERNEL) && defined(HAVE_UIO_RW)
+#ifdef _KERNEL
 int
 dmu_read_uio(objset_t *os, uint64_t object, uio_t *uio, uint64_t size)
 {
diff --git a/module/zfs/include/sys/dmu.h b/module/zfs/include/sys/dmu.h
index e3c69ee3e8..88e3c1bd4b 100644
--- a/module/zfs/include/sys/dmu.h
+++ b/module/zfs/include/sys/dmu.h
@@ -490,13 +490,11 @@ void dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
 	const void *buf, dmu_tx_t *tx);
 void dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
 	dmu_tx_t *tx);
-#if defined(_KERNEL) && defined(HAVE_UIO_RW)
 int dmu_read_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size);
 int dmu_write_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size,
     dmu_tx_t *tx);
 int dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset,
     uint64_t size, struct page *pp, dmu_tx_t *tx);
-#endif
 struct arc_buf *dmu_request_arcbuf(dmu_buf_t *handle, int size);
 void dmu_return_arcbuf(struct arc_buf *buf);
 void dmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, struct arc_buf *buf,
diff --git a/module/zfs/include/sys/zfs_znode.h b/module/zfs/include/sys/zfs_znode.h
index d141c03027..240804c6ed 100644
--- a/module/zfs/include/sys/zfs_znode.h
+++ b/module/zfs/include/sys/zfs_znode.h
@@ -345,10 +345,8 @@ extern void zfs_xvattr_set(znode_t *zp, xvattr_t *xvap);
 extern void zfs_upgrade(zfsvfs_t *zfsvfs, dmu_tx_t *tx);
 extern int zfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx);
 
-#if defined(HAVE_UIO_RW)
 extern caddr_t zfs_map_page(page_t *, enum seg_rw);
 extern void zfs_unmap_page(page_t *, caddr_t);
-#endif /* HAVE_UIO_RW */
 
 extern zil_get_data_t zfs_get_data;
 extern zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE];
diff --git a/module/zfs/zfs_vnops.c b/module/zfs/zfs_vnops.c
index afecb374bc..8eb4665aed 100644
--- a/module/zfs/zfs_vnops.c
+++ b/module/zfs/zfs_vnops.c
@@ -318,7 +318,6 @@ zfs_ioctl(vnode_t *vp, int com, intptr_t data, int flag, cred_t *cred,
 	return (ENOTTY);
 }
 
-#if defined(_KERNEL) && defined(HAVE_UIO_RW)
 /*
  * Utility functions to map and unmap a single physical page.  These
  * are used to manage the mappable copies of ZFS file data, and therefore
@@ -343,7 +342,6 @@ zfs_unmap_page(page_t *pp, caddr_t addr)
 		ppmapout(addr);
 	}
 }
-#endif /* _KERNEL && HAVE_UIO_RW */
 
 /*
  * When a file is memory mapped, we must keep the IO data synchronized