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[src-draft/trunk]: src/sys Print a warning for non-mpsafe vnodes
details: https://anonhg.NetBSD.org/src-all/rev/e2d7fe6a8687
branches: trunk
changeset: 931819:e2d7fe6a8687
user: Joerg Sonnenberger <joerg%bec.de@localhost>
date: Thu Dec 26 23:36:07 2019 +0100
description:
Print a warning for non-mpsafe vnodes
diffstat:
sys/kern/vnode_if.c | 5 +++++
sys/sys/vnode.h | 1 +
2 files changed, 6 insertions(+), 0 deletions(-)
diffs (26 lines):
diff -r bc79d5d3bb73 -r e2d7fe6a8687 sys/kern/vnode_if.c
--- a/sys/kern/vnode_if.c Thu Dec 26 23:35:18 2019 +0100
+++ b/sys/kern/vnode_if.c Thu Dec 26 23:36:07 2019 +0100
@@ -86,6 +86,11 @@
*mp = vp->v_mount;
}
+ if (!*mpsafe && !(vp->v_vflag & VV_NONMPSAFE)) {
+ vp->v_vflag |= VV_NONMPSAFE;
+ printf("vnode %p on mount point %p is not mpsafe\n", vp, *mp);
+ }
+
return 0;
}
diff -r bc79d5d3bb73 -r e2d7fe6a8687 sys/sys/vnode.h
--- a/sys/sys/vnode.h Thu Dec 26 23:35:18 2019 +0100
+++ b/sys/sys/vnode.h Thu Dec 26 23:36:07 2019 +0100
@@ -201,6 +201,7 @@
#define VV_MAPPED 0x00000008 /* vnode might have user mappings */
#define VV_MPSAFE 0x00000010 /* file system code is MP safe */
#define VV_LOCKSWORK 0x00000020 /* FS supports locking discipline */
+#define VV_NONMPSAFE 0x00000040 /* file system code is not MP safe, warned */
/*
* The second set are locked by vp->v_interlock. VI_TEXT and VI_EXECMAP are
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