[src/trunk]: src/sys/kern Make sure vcache_reclaim() will complete before fil...

[hannken <hannken%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/40edf1de6b3f
branches:  trunk
changeset: 351534:40edf1de6b3f
user:      hannken <hannken%NetBSD.org@localhost>
date:      Fri Feb 17 08:27:58 2017 +0000

description:
Make sure vcache_reclaim() will complete before file system suspension.

diffstat:

 sys/kern/vfs_vnode.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (44 lines):

diff -r c99321548b1f -r 40edf1de6b3f sys/kern/vfs_vnode.c
--- a/sys/kern/vfs_vnode.c      Fri Feb 17 08:27:20 2017 +0000
+++ b/sys/kern/vfs_vnode.c      Fri Feb 17 08:27:58 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vfs_vnode.c,v 1.73 2017/01/27 10:50:10 hannken Exp $   */
+/*     $NetBSD: vfs_vnode.c,v 1.74 2017/02/17 08:27:58 hannken Exp $   */
 
 /*-
  * Copyright (c) 1997-2011 The NetBSD Foundation, Inc.
@@ -156,7 +156,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.73 2017/01/27 10:50:10 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.74 2017/02/17 08:27:58 hannken Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -1441,6 +1441,7 @@
 {
        lwp_t *l = curlwp;
        vnode_impl_t *vip = VNODE_TO_VIMPL(vp);
+       struct mount *mp = vp->v_mount;
        uint32_t hash;
        uint8_t temp_buf[64], *temp_key;
        size_t temp_key_len;
@@ -1477,6 +1478,8 @@
        vip->vi_key.vk_key = temp_key;
        mutex_exit(&vcache_lock);
 
+       fstrans_start(mp, FSTRANS_LAZY);
+
        /*
         * Clean out any cached data associated with the vnode.
         * If purging an active vnode, it must be closed and
@@ -1537,6 +1540,8 @@
        vp->v_tag = VT_NON;
        KNOTE(&vp->v_klist, NOTE_REVOKE);
 
+       fstrans_done(mp);
+
        KASSERT((vp->v_iflag & VI_ONWORKLST) == 0);
 }