From ae2afc437b3dfc1afbc659b4773e3d313af4c4ea Mon Sep 17 00:00:00 2001
From: Poul-Henning Kamp <phk@FreeBSD.org>
Date: Thu, 6 Feb 2003 21:50:39 +0000
Subject: [PATCH] Experimentally don't let go of Giant in geom_disk's done. We
 may actually be increasing Giant contention doing so because the actual stuff
 we do is very cheap.

Also I am not convinced there is not a tiny window for a race here.
---
 sys/geom/geom_disk.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/geom/geom_disk.c b/sys/geom/geom_disk.c
index c890836f472..b55ea60aa7e 100644
--- a/sys/geom/geom_disk.c
+++ b/sys/geom/geom_disk.c
@@ -154,6 +154,7 @@ g_disk_kerneldump(struct bio *bp, struct disk *dp)
 static void
 g_disk_done(struct bio *bp)
 {
+#ifdef maybe_not
 	struct disk *dp;
 
 	dp = bp->bio_disk;
@@ -165,6 +166,10 @@ g_disk_done(struct bio *bp)
 	} else {
 		g_std_done(bp);
 	}
+#else
+	bp->bio_completed = bp->bio_length - bp->bio_resid;
+	g_std_done(bp);
+#endif
 }
 
 static void