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authorriastradh <riastradh@NetBSD.org>2023-05-13 10:11:36 +0000
committerriastradh <riastradh@NetBSD.org>2023-05-13 10:11:36 +0000
commit6b91a4e1d350a8a24ea9d0327286164e3e18c5f2 (patch)
treed5039d1a21e84616d827aca36a1ed64fae83910b /sys/dev
parent5d196dd2c1dccc7e96cbc8a8cf5bcb8ddef0d687 (diff)
dk(4): Need pdk->dk_openlock to read pdk->dk_wedges.
Diffstat (limited to 'sys/dev')
-rw-r--r--sys/dev/dkwedge/dk.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/dev/dkwedge/dk.c b/sys/dev/dkwedge/dk.c
index 834728a0ee2..f5a5f75d882 100644
--- a/sys/dev/dkwedge/dk.c
+++ b/sys/dev/dkwedge/dk.c
@@ -1,4 +1,4 @@
-/* $NetBSD: dk.c,v 1.157 2023/05/10 23:08:24 riastradh Exp $ */
+/* $NetBSD: dk.c,v 1.158 2023/05/13 10:11:36 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 1.157 2023/05/10 23:08:24 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.158 2023/05/13 10:11:36 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_dkwedge.h"
@@ -1333,12 +1333,14 @@ dkfirstopen(struct dkwedge_softc *sc, int flags)
KASSERT(sc->sc_parent->dk_rawopens < UINT_MAX);
KASSERT(sc->sc_parent->dk_rawvp != NULL);
mode = 0;
+ mutex_enter(&sc->sc_parent->dk_openlock);
LIST_FOREACH(nsc, &sc->sc_parent->dk_wedges, sc_plink) {
if (nsc == sc || nsc->sc_dk.dk_openmask == 0)
continue;
mode = nsc->sc_mode;
break;
}
+ mutex_exit(&sc->sc_parent->dk_openlock);
}
sc->sc_mode = mode;
sc->sc_parent->dk_rawopens++;