[src/trunk]: src/sys/kern make this bitch less when we have wedges (EBUSY for...

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

details:   https://anonhg.NetBSD.org/src/rev/dde966e0ee52
branches:  trunk
changeset: 778640:dde966e0ee52
user:      christos <christos%NetBSD.org@localhost>
date:      Sat Apr 07 05:38:07 2012 +0000

description:
make this bitch less when we have wedges (EBUSY for the underlying disks)

diffstat:

 sys/kern/subr_disk_open.c |  17 +++++++++++------
 1 files changed, 11 insertions(+), 6 deletions(-)

diffs (43 lines):

diff -r bc2668b0f9b3 -r dde966e0ee52 sys/kern/subr_disk_open.c
--- a/sys/kern/subr_disk_open.c Sat Apr 07 05:36:49 2012 +0000
+++ b/sys/kern/subr_disk_open.c Sat Apr 07 05:38:07 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_disk_open.c,v 1.6 2011/11/27 00:38:12 tsutsui Exp $       */
+/*     $NetBSD: subr_disk_open.c,v 1.7 2012/04/07 05:38:07 christos Exp $      */
 
 /*-
  * Copyright (c) 2006 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_disk_open.c,v 1.6 2011/11/27 00:38:12 tsutsui Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_disk_open.c,v 1.7 2012/04/07 05:38:07 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -66,15 +66,20 @@
                    device_xname(dv));
        error = VOP_OPEN(tmpvn, FREAD | FSILENT, NOCRED);
        if (error) {
-#ifndef DEBUG
                /*
                 * Ignore errors caused by missing device, partition,
-                * or medium.
+                * medium, or busy [presumably because of a wedge covering it]
                 */
-               if (error != ENXIO && error != ENODEV)
-#endif
+               switch (error) {
+               case ENXIO:
+               case ENODEV:
+               case EBUSY:
+                       break;
+               default:
                        printf("%s: can't open dev %s (%d)\n",
                            __func__, device_xname(dv), error);
+                       break;
+               }
                vput(tmpvn);
                return NULL;
        }