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- kern.maxvnodes: only call vfs_reinit() and nchreinit() if the value

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was successfully changed.  previously, successfully viewing the
  current value would flush the cache :-/
- similarly, don't change hostid and sb_max unless the value was
  successfully changed
This commit is contained in:
lukem 2002-01-27 13:33:36 +00:00
parent 2aee73a306
commit fea75ff830
1 changed files with 10 additions and 9 deletions
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19
sys/kern/kern_sysctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sysctl.c,v 1.98 2002/01/27 12:41:08 simonb Exp $ */
/* $NetBSD: kern_sysctl.c,v 1.99 2002/01/27 13:33:36 lukem Exp $ */
/*-
* Copyright (c) 1982, 1986, 1989, 1993
@ -43,7 +43,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_sysctl.c,v 1.98 2002/01/27 12:41:08 simonb Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_sysctl.c,v 1.99 2002/01/27 13:33:36 lukem Exp $");
#include "opt_ddb.h"
#include "opt_insecure.h"
@ -352,11 +352,11 @@ kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
case KERN_MAXVNODES:
old_vnodes = desiredvnodes;
error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes);
if (old_vnodes > desiredvnodes) {
desiredvnodes = old_vnodes;
return (EINVAL);
}
if (error == 0) {
if (newp && !error) {
if (old_vnodes > desiredvnodes) {
desiredvnodes = old_vnodes;
return (EINVAL);
}
vfs_reinit();
nchreinit();
}
@ -391,7 +391,8 @@ kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
case KERN_HOSTID:
inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */
error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid);
hostid = inthostid;
if (newp && !error)
hostid = inthostid;
return (error);
case KERN_CLOCKRATE:
return (sysctl_clockrate(oldp, oldlenp));
@ -550,7 +551,7 @@ kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
int new_sbmax = sb_max;
error = sysctl_int(oldp, oldlenp, newp, newlen, &new_sbmax);
if (error == 0) {
if (newp && !error) {
if (new_sbmax < (16 * 1024)) /* sanity */
return (EINVAL);
sb_max = new_sbmax;