From bf4843166f2ed50e6435a77b38a011945de0a6f6 Mon Sep 17 00:00:00 2001
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Mon, 13 Dec 2004 12:57:21 +0000
Subject: [PATCH] Add bioq_insert_head() function.

OK'd by:	phk
---
 sys/kern/subr_disk.c | 7 +++++++
 sys/sys/bio.h        | 1 +
 2 files changed, 8 insertions(+)

diff --git a/sys/kern/subr_disk.c b/sys/kern/subr_disk.c
index fcd0c9da63b0..9d1ef07d0062 100644
--- a/sys/kern/subr_disk.c
+++ b/sys/kern/subr_disk.c
@@ -98,6 +98,13 @@ bioq_flush(struct bio_queue_head *head, struct devstat *stp, int error)
 		biofinish(bp, stp, error);
 }
 
+void
+bioq_insert_head(struct bio_queue_head *head, struct bio *bp)
+{
+
+	TAILQ_INSERT_HEAD(&head->queue, bp, bio_queue);
+}
+
 void
 bioq_insert_tail(struct bio_queue_head *head, struct bio *bp)
 {
diff --git a/sys/sys/bio.h b/sys/sys/bio.h
index 52a7bf894563..cb1a5a2486a8 100644
--- a/sys/sys/bio.h
+++ b/sys/sys/bio.h
@@ -118,6 +118,7 @@ struct bio *bioq_first(struct bio_queue_head *head);
 struct bio *bioq_takefirst(struct bio_queue_head *head);
 void bioq_flush(struct bio_queue_head *head, struct devstat *stp, int error);
 void bioq_init(struct bio_queue_head *head);
+void bioq_insert_head(struct bio_queue_head *head, struct bio *bp);
 void bioq_insert_tail(struct bio_queue_head *head, struct bio *bp);
 void bioq_remove(struct bio_queue_head *head, struct bio *bp);