diff --git a/lib/libzpool/include/sys/zfs_context.h b/lib/libzpool/include/sys/zfs_context.h
index 109ad925d7..db93a89b8b 100644
--- a/lib/libzpool/include/sys/zfs_context.h
+++ b/lib/libzpool/include/sys/zfs_context.h
@@ -76,12 +76,6 @@ extern "C" {
 #include <sys/sysevent/dev.h>
 #include <sys/sunddi.h>
 
-/*
- * Stack
- */
-
-#define  noinline	__attribute__((noinline))
-
 /*
  * Debugging
  */
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index c45bcb399c..d265d6cdf2 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -2095,11 +2095,7 @@ dbuf_check_blkptr(dnode_t *dn, dmu_buf_impl_t *db)
 	}
 }
 
-/* dbuf_sync_indirect() is called recursively from dbuf_sync_list() so it
- * is critical the we not allow the compiler to inline this function in to
- * dbuf_sync_list() thereby drastically bloating the stack usage.
- */
-noinline static void
+static void
 dbuf_sync_indirect(dbuf_dirty_record_t *dr, dmu_tx_t *tx)
 {
 	dmu_buf_impl_t *db = dr->dr_dbuf;
@@ -2139,11 +2135,7 @@ dbuf_sync_indirect(dbuf_dirty_record_t *dr, dmu_tx_t *tx)
 	zio_nowait(zio);
 }
 
-/* dbuf_sync_leaf() is called recursively from dbuf_sync_list() so it is
- * critical the we not allow the compiler to inline this function in to
- * dbuf_sync_list() thereby drastically bloating the stack usage.
- */
-noinline static void
+static void
 dbuf_sync_leaf(dbuf_dirty_record_t *dr, dmu_tx_t *tx)
 {
 	arc_buf_t **datap = &dr->dt.dl.dr_data;
diff --git a/module/zfs/dmu_objset.c b/module/zfs/dmu_objset.c
index 04ac4b07c7..2f82261653 100644
--- a/module/zfs/dmu_objset.c
+++ b/module/zfs/dmu_objset.c
@@ -879,49 +879,45 @@ dmu_objset_snapshot(char *fsname, char *snapname,
     nvlist_t *props, boolean_t recursive)
 {
 	dsl_sync_task_t *dst;
-	struct snaparg *sn;
+	struct snaparg sn;
 	spa_t *spa;
 	int err;
 
-	sn = kmem_alloc(sizeof (struct snaparg), KM_SLEEP);
-	(void) strcpy(sn->failed, fsname);
+	(void) strcpy(sn.failed, fsname);
 
 	err = spa_open(fsname, &spa, FTAG);
-	if (err) {
-		kmem_free(sn, sizeof (struct snaparg));
+	if (err)
 		return (err);
-	}
 
-	sn->dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
-	sn->snapname = snapname;
-	sn->props = props;
-	sn->recursive = recursive;
+	sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa));
+	sn.snapname = snapname;
+	sn.props = props;
+	sn.recursive = recursive;
 
 	if (recursive) {
 		err = dmu_objset_find(fsname,
-		    dmu_objset_snapshot_one, sn, DS_FIND_CHILDREN);
+		    dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN);
 	} else {
-		err = dmu_objset_snapshot_one(fsname, sn);
+		err = dmu_objset_snapshot_one(fsname, &sn);
 	}
 
 	if (err == 0)
-		err = dsl_sync_task_group_wait(sn->dstg);
+		err = dsl_sync_task_group_wait(sn.dstg);
 
-	for (dst = list_head(&sn->dstg->dstg_tasks); dst;
-	    dst = list_next(&sn->dstg->dstg_tasks, dst)) {
+	for (dst = list_head(&sn.dstg->dstg_tasks); dst;
+	    dst = list_next(&sn.dstg->dstg_tasks, dst)) {
 		objset_t *os = dst->dst_arg1;
 		dsl_dataset_t *ds = os->os_dsl_dataset;
 		if (dst->dst_err)
-			dsl_dataset_name(ds, sn->failed);
+			dsl_dataset_name(ds, sn.failed);
 		zil_resume(dmu_objset_zil(os));
 		dmu_objset_rele(os, &sn);
 	}
 
 	if (err)
-		(void) strcpy(fsname, sn->failed);
-	dsl_sync_task_group_destroy(sn->dstg);
+		(void) strcpy(fsname, sn.failed);
+	dsl_sync_task_group_destroy(sn.dstg);
 	spa_close(spa, FTAG);
-	kmem_free(sn, sizeof (struct snaparg));
 	return (err);
 }
 
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c
index 901c8b4cf3..6f313e6c37 100644
--- a/module/zfs/dmu_send.c
+++ b/module/zfs/dmu_send.c
@@ -921,7 +921,7 @@ restore_read(struct restorearg *ra, int len)
 	return (rv);
 }
 
-noinline static void
+static void
 backup_byteswap(dmu_replay_record_t *drr)
 {
 #define	DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X))
@@ -1003,7 +1003,7 @@ backup_byteswap(dmu_replay_record_t *drr)
 #undef DO32
 }
 
-noinline static int
+static int
 restore_object(struct restorearg *ra, objset_t *os, struct drr_object *drro)
 {
 	int err;
@@ -1087,7 +1087,7 @@ restore_object(struct restorearg *ra, objset_t *os, struct drr_object *drro)
 }
 
 /* ARGSUSED */
-noinline static int
+static int
 restore_freeobjects(struct restorearg *ra, objset_t *os,
     struct drr_freeobjects *drrfo)
 {
@@ -1111,7 +1111,7 @@ restore_freeobjects(struct restorearg *ra, objset_t *os,
 	return (0);
 }
 
-noinline static int
+static int
 restore_write(struct restorearg *ra, objset_t *os,
     struct drr_write *drrw)
 {
@@ -1257,7 +1257,7 @@ restore_spill(struct restorearg *ra, objset_t *os, struct drr_spill *drrs)
 }
 
 /* ARGSUSED */
-noinline static int
+static int
 restore_free(struct restorearg *ra, objset_t *os,
     struct drr_free *drrf)
 {