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[src/ad-namecache]: src/sys/kern vrelel: don't change the vnode state to VS_B...
details: https://anonhg.NetBSD.org/src/rev/1cfff4394501
branches: ad-namecache
changeset: 1025022:1cfff4394501
user: ad <ad%NetBSD.org@localhost>
date: Fri Jan 17 21:55:13 2020 +0000
description:
vrelel: don't change the vnode state to VS_BLOCKED for VOP_INACTIVE(), it's
not needed (at least not for the usual case). Will revist before merge.
diffstat:
sys/kern/vfs_vnode.c | 29 +++++++++++++----------------
1 files changed, 13 insertions(+), 16 deletions(-)
diffs (63 lines):
diff -r d0e5e18f8b52 -r 1cfff4394501 sys/kern/vfs_vnode.c
--- a/sys/kern/vfs_vnode.c Fri Jan 17 21:54:27 2020 +0000
+++ b/sys/kern/vfs_vnode.c Fri Jan 17 21:55:13 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_vnode.c,v 1.105.2.2 2020/01/17 21:47:35 ad Exp $ */
+/* $NetBSD: vfs_vnode.c,v 1.105.2.3 2020/01/17 21:55:13 ad Exp $ */
/*-
* Copyright (c) 1997-2011, 2019 The NetBSD Foundation, Inc.
@@ -119,8 +119,7 @@
* Vnode finished disassociation from underlying file
* system in vcache_reclaim().
* LOADED -> BLOCKED
- * Either vcache_rekey*() is changing the vnode key or
- * vrelel() is about to call VOP_INACTIVE().
+ * vcache_rekey*() is changing the vnode key.
* BLOCKED -> LOADED
* The block condition is over.
* LOADING -> RECLAIMED
@@ -146,7 +145,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.105.2.2 2020/01/17 21:47:35 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.105.2.3 2020/01/17 21:55:13 ad Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -777,24 +776,22 @@
if (VSTATE_GET(vp) == VS_RECLAIMED) {
VOP_UNLOCK(vp);
} else {
- VSTATE_CHANGE(vp, VS_LOADED, VS_BLOCKED);
- mutex_exit(vp->v_interlock);
-
/*
- * The vnode must not gain another reference while being
- * deactivated. If VOP_INACTIVE() indicates that
- * the described file has been deleted, then recycle
- * the vnode.
+ * If VOP_INACTIVE() indicates that the described file has
+ * been deleted, then recycle the vnode. Note that
+ * VOP_INACTIVE() will not drop the vnode lock.
*
- * Note that VOP_INACTIVE() will not drop the vnode lock.
+ * If the file has been deleted, this is a lingering
+ * reference and there is no need to worry about new
+ * references looking to do real work with the vnode (as it
+ * will have been purged from directories, caches, etc).
*/
recycle = false;
+ mutex_exit(vp->v_interlock);
VOP_INACTIVE(vp, &recycle);
- if (!recycle)
+ mutex_enter(vp->v_interlock);
+ if (!recycle) {
VOP_UNLOCK(vp);
- mutex_enter(vp->v_interlock);
- VSTATE_CHANGE(vp, VS_BLOCKED, VS_LOADED);
- if (!recycle) {
if (vp->v_usecount > 1) {
vp->v_usecount--;
mutex_exit(vp->v_interlock);
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