[src/trunk]: src/sys/uvm Introducing inner loop prevent us from exiting from ...

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

details:   https://anonhg.NetBSD.org/src/rev/f5deb6f3d709
branches:  trunk
changeset: 761389:f5deb6f3d709
user:      enami <enami%NetBSD.org@localhost>
date:      Wed Jan 26 08:49:48 2011 +0000

description:
Introducing inner loop prevent us from exiting from the original loop.

diffstat:

 sys/uvm/uvm_pglist.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (37 lines):

diff -r 8f04ea055786 -r f5deb6f3d709 sys/uvm/uvm_pglist.c
--- a/sys/uvm/uvm_pglist.c      Wed Jan 26 01:18:43 2011 +0000
+++ b/sys/uvm/uvm_pglist.c      Wed Jan 26 08:49:48 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_pglist.c,v 1.59 2011/01/25 17:22:43 matt Exp $     */
+/*     $NetBSD: uvm_pglist.c,v 1.60 2011/01/26 08:49:48 enami Exp $    */
 
 /*-
  * Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_pglist.c,v 1.59 2011/01/25 17:22:43 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_pglist.c,v 1.60 2011/01/26 08:49:48 enami Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -390,8 +390,9 @@
        if (high <= ps->avail_start || low >= ps->avail_end)
                return 0;
 
+again:
        for (;; try++, pg++) {
-               while (try >= limit) {
+               if (try >= limit) {
                        if (ps->start_hint == 0 || second_pass) {
                                try = limit - 1;
                                break;
@@ -400,6 +401,7 @@
                        try = max(low, ps->avail_start);
                        limit = min(limit, ps->avail_start + ps->start_hint);
                        pg = &ps->pgs[try - ps->start];
+                       goto again;
                }
 #if defined(DEBUG)
                {