[src/trunk]: src/sys/kern vrele_flush(): yield() every 100ms like we do it in...

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

details:   https://anonhg.NetBSD.org/src/rev/21d3ab72c7b6
branches:  trunk
changeset: 932933:21d3ab72c7b6
user:      hannken <hannken%NetBSD.org@localhost>
date:      Mon May 18 08:27:54 2020 +0000

description:
vrele_flush(): yield() every 100ms like we do it in vflush().

diffstat:

 sys/kern/vfs_vnode.c |  10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diffs (38 lines):

diff -r fdcf13fd0667 -r 21d3ab72c7b6 sys/kern/vfs_vnode.c
--- a/sys/kern/vfs_vnode.c      Mon May 18 05:47:54 2020 +0000
+++ b/sys/kern/vfs_vnode.c      Mon May 18 08:27:54 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vfs_vnode.c,v 1.121 2020/04/19 13:25:00 hannken Exp $  */
+/*     $NetBSD: vfs_vnode.c,v 1.122 2020/05/18 08:27:54 hannken Exp $  */
 
 /*-
  * Copyright (c) 1997-2011, 2019, 2020 The NetBSD Foundation, Inc.
@@ -155,7 +155,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.121 2020/04/19 13:25:00 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.122 2020/05/18 08:27:54 hannken Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_pax.h"
@@ -534,6 +534,7 @@
 {
        vnode_impl_t *vip, *marker;
        vnode_t *vp;
+       int when = 0;
 
        KASSERT(fstrans_is_owner(mp));
 
@@ -561,6 +562,11 @@
                mutex_enter(vp->v_interlock);
                vrelel(vp, 0, LK_EXCLUSIVE);
 
+               if (getticks() > when) {
+                       yield();
+                       when = getticks() + hz / 10;
+               }
+
                mutex_enter(&vdrain_lock);
        }