From 4a5167232c741af29d5aca8ac4e545a6c46d6f01 Mon Sep 17 00:00:00 2001
From: pooka <pooka@NetBSD.org>
Date: Wed, 21 Nov 2007 16:30:01 +0000
Subject: [PATCH] Add BUF_ISREAD() and BUF_ISWRITE() macros to avoid silly code
 checking for the B_WRITE pseudo-flag: (bp->b_flags & B_READ) == B_WRITE

---
 sys/sys/buf.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/sys/buf.h b/sys/sys/buf.h
index c37df3df9ba2..3b8d61babd3b 100644
--- a/sys/sys/buf.h
+++ b/sys/sys/buf.h
@@ -1,4 +1,4 @@
-/*     $NetBSD: buf.h,v 1.98 2007/10/08 18:04:06 ad Exp $ */
+/*     $NetBSD: buf.h,v 1.99 2007/11/21 16:30:01 pooka Exp $ */
 
 /*-
  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -226,6 +226,10 @@ do {									\
 #define	BC_INVAL	B_INVAL
 #define	BC_NOCACHE	B_NOCACHE
 
+/* Avoid weird code due to B_WRITE being a "pseudo flag" */
+#define BUF_ISREAD(bp)	(((bp)->b_flags & B_READ) == B_READ)
+#define BUF_ISWRITE(bp)	(((bp)->b_flags & B_READ) == B_WRITE)
+
 /*
  * This structure describes a clustered I/O.  It is stored in the b_saveaddr
  * field of the buffer on which I/O is done.  At I/O completion, cluster