Re-arrange struct bus_dmamap members

This reduces holes/padding and makes the struct smaller by 8 bytes.

ok kettenis@

diff --git a/sys/arch/amd64/include/bus.h b/sys/arch/amd64/include/bus.h
index 0463edb..4706c73 100644 (file)
--- a/sys/arch/amd64/include/bus.h
+++ b/sys/arch/amd64/include/bus.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: bus.h,v 1.33 2017/05/08 00:27:45 dlg Exp $    */
+/*     $OpenBSD: bus.h,v 1.34 2017/06/04 06:21:37 sf Exp $     */
 /*     $NetBSD: bus.h,v 1.6 1996/11/10 03:19:25 thorpej Exp $  */
 
 /*-
@@ -648,10 +648,10 @@ struct bus_dmamap {
         * PRIVATE MEMBERS: not for use by machine-independent code.
         */
        bus_size_t      _dm_size;       /* largest DMA transfer mappable */
+       int             _dm_flags;      /* misc. flags */
        int             _dm_segcnt;     /* number of segs this map can map */
        bus_size_t      _dm_maxsegsz;   /* largest possible segment */
        bus_size_t      _dm_boundary;   /* don't cross this */
-       int             _dm_flags;      /* misc. flags */
 
        void            *_dm_cookie;    /* cookie for bus-specific functions */