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[src/trunk]: src/sys/dev/dkwedge dk(4): Use device_lookup_private for dkwedge...
details: https://anonhg.NetBSD.org/src/rev/87724e6b7f8d
branches: trunk
changeset: 375929:87724e6b7f8d
user: riastradh <riastradh%NetBSD.org@localhost>
date: Mon May 22 14:58:50 2023 +0000
description:
dk(4): Use device_lookup_private for dkwedge_lookup.
No longer necessary to go through the dkwedges array.
Currently device_lookup_private still involves touching other global
locks, but that will change eventually to a lockless pserialized fast
path.
diffstat:
sys/dev/dkwedge/dk.c | 15 +++------------
1 files changed, 3 insertions(+), 12 deletions(-)
diffs (37 lines):
diff -r 2cd3c1b0a81a -r 87724e6b7f8d sys/dev/dkwedge/dk.c
--- a/sys/dev/dkwedge/dk.c Mon May 22 14:58:41 2023 +0000
+++ b/sys/dev/dkwedge/dk.c Mon May 22 14:58:50 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dk.c,v 1.160 2023/05/22 14:58:41 riastradh Exp $ */
+/* $NetBSD: dk.c,v 1.161 2023/05/22 14:58:50 riastradh Exp $ */
/*-
* Copyright (c) 2004, 2005, 2006, 2007 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.160 2023/05/22 14:58:41 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.161 2023/05/22 14:58:50 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_dkwedge.h"
@@ -1164,17 +1164,8 @@ dkwedge_read(struct disk *pdk, struct vn
static struct dkwedge_softc *
dkwedge_lookup(dev_t dev)
{
- const int unit = minor(dev);
- struct dkwedge_softc *sc;
- rw_enter(&dkwedges_lock, RW_READER);
- if (unit < 0 || unit >= ndkwedges)
- sc = NULL;
- else
- sc = dkwedges[unit];
- rw_exit(&dkwedges_lock);
-
- return sc;
+ return device_lookup_private(&dk_cd, minor(dev));
}
static int
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