[src/trunk]: src/sys/sys Add missing BUFQ_INSERT_HEAD().

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a20f61b45994
branches:  trunk
changeset: 481172:a20f61b45994
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Mon Jan 24 03:42:57 2000 +0000

description:
Add missing BUFQ_INSERT_HEAD().

diffstat:

 sys/sys/buf.h |  10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diffs (24 lines):

diff -r 4f84330c597c -r a20f61b45994 sys/sys/buf.h
--- a/sys/sys/buf.h     Mon Jan 24 03:08:12 2000 +0000
+++ b/sys/sys/buf.h     Mon Jan 24 03:42:57 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: buf.h,v 1.36 2000/01/21 23:20:51 thorpej Exp $ */
+/*     $NetBSD: buf.h,v 1.37 2000/01/24 03:42:57 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -107,6 +107,14 @@
        (bufq)->bq_barrier = NULL;                                      \
 } while (/*CONSTCOND*/0)
 
+#define        BUFQ_INSERT_HEAD(bufq, bp)                                      \
+do {                                                                   \
+       TAILQ_INSERT_HEAD(&(bufq)->bq_head, (bp), b_actq);              \
+       if (((bp)->b_flags & B_ORDERED) != 0 &&                         \
+           (bufq)->bq_barrier == NULL)                                 \
+               (bufq)->bq_barrier = (bp);                              \
+} while (0)
+
 #define        BUFQ_INSERT_TAIL(bufq, bp)                                      \
 do {                                                                   \
        TAILQ_INSERT_TAIL(&(bufq)->bq_head, (bp), b_actq);              \