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skip the swap-out code if there's no swap space configured.

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avoid some hangs in low-memory situations.
This commit is contained in:
chs 2001-09-30 02:57:34 +00:00
parent d4406ff8c9
commit 0c3dfee2f8
1 changed files with 4 additions and 2 deletions
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6
sys/uvm/uvm_pdaemon.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_pdaemon.c,v 1.38 2001/09/26 07:08:41 chs Exp $ */
/* $NetBSD: uvm_pdaemon.c,v 1.39 2001/09/30 02:57:34 chs Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -721,11 +721,13 @@ uvmpd_scan(void)
anon = NULL;
#ifndef __SWAP_BROKEN
/*
* swap out some processes if we are below our free target.
* we need to unlock the page queues for this.
*/
if (uvmexp.free < uvmexp.freetarg) {
if (uvmexp.free < uvmexp.freetarg && uvmexp.nswapdev != 0) {
uvmexp.pdswout++;
UVMHIST_LOG(pdhist," free %d < target %d: swapout",
uvmexp.free, uvmexp.freetarg, 0, 0);