Module Name: src
Committed By: martin
Date: Mon Feb 6 17:04:48 UTC 2023
Modified Files:
src/sys/fs/union [netbsd-9]: union_vfsops.c
src/sys/miscfs/nullfs [netbsd-9]: null_vfsops.c
Log Message:
Pull up following revision(s) (requested by hannken in ticket #1587):
sys/fs/union/union_vfsops.c: revision 1.86
sys/miscfs/nullfs/null_vfsops.c: revision 1.101 (via patch)
Set IMNT_MPSAFE only if all lower layers have it set.
To generate a diff of this commit:
cvs rdiff -u -r1.79 -r1.79.4.1 src/sys/fs/union/union_vfsops.c
cvs rdiff -u -r1.95.4.1 -r1.95.4.2 src/sys/miscfs/nullfs/null_vfsops.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/fs/union/union_vfsops.c
diff -u src/sys/fs/union/union_vfsops.c:1.79 src/sys/fs/union/union_vfsops.c:1.79.4.1
--- src/sys/fs/union/union_vfsops.c:1.79 Wed Feb 20 10:05:59 2019
+++ src/sys/fs/union/union_vfsops.c Mon Feb 6 17:04:48 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: union_vfsops.c,v 1.79 2019/02/20 10:05:59 hannken Exp $ */
+/* $NetBSD: union_vfsops.c,v 1.79.4.1 2023/02/06 17:04:48 martin Exp $ */
/*
* Copyright (c) 1994 The Regents of the University of California.
@@ -77,7 +77,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: union_vfsops.c,v 1.79 2019/02/20 10:05:59 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: union_vfsops.c,v 1.79.4.1 2023/02/06 17:04:48 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -200,7 +200,14 @@ union_mount(struct mount *mp, const char
goto bad;
}
- mp->mnt_iflag |= IMNT_MPSAFE;
+ /*
+ * This mount is mp-safe if both lower mounts are mp-safe.
+ */
+
+ if (((um->um_lowervp == NULLVP) ||
+ (um->um_lowervp->v_mount->mnt_iflag & IMNT_MPSAFE)) &&
+ (um->um_uppervp->v_mount->mnt_iflag & IMNT_MPSAFE))
+ mp->mnt_iflag |= IMNT_MPSAFE;
/*
* Unless the mount is readonly, ensure that the top layer
Index: src/sys/miscfs/nullfs/null_vfsops.c
diff -u src/sys/miscfs/nullfs/null_vfsops.c:1.95.4.1 src/sys/miscfs/nullfs/null_vfsops.c:1.95.4.2
--- src/sys/miscfs/nullfs/null_vfsops.c:1.95.4.1 Tue Dec 24 17:45:53 2019
+++ src/sys/miscfs/nullfs/null_vfsops.c Mon Feb 6 17:04:48 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: null_vfsops.c,v 1.95.4.1 2019/12/24 17:45:53 martin Exp $ */
+/* $NetBSD: null_vfsops.c,v 1.95.4.2 2023/02/06 17:04:48 martin Exp $ */
/*
* Copyright (c) 1999 National Aeronautics & Space Administration
@@ -76,7 +76,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: null_vfsops.c,v 1.95.4.1 2019/12/24 17:45:53 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: null_vfsops.c,v 1.95.4.2 2023/02/06 17:04:48 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -140,7 +140,7 @@ nullfs_mount(struct mount *mp, const cha
/* Create the mount point. */
nmp = kmem_zalloc(sizeof(struct null_mount), KM_SLEEP);
mp->mnt_data = nmp;
- mp->mnt_iflag |= IMNT_MPSAFE;
+ mp->mnt_iflag |= lowerrootvp->v_mount->mnt_iflag & IMNT_MPSAFE;
/*
* Make sure that the mount point is sufficiently initialized
