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amap_cow_now: just free the fresh anon on error, no need to dispose it.

This commit is contained in:
rmind 2011-08-17 20:46:27 +00:00
parent e27abe6ff4
commit e52f8e8779
1 changed files with 4 additions and 10 deletions
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14
sys/uvm/uvm_amap.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_amap.c,v 1.102 2011/08/06 17:25:03 rmind Exp $ */ /* $NetBSD: uvm_amap.c,v 1.103 2011/08/17 20:46:27 rmind Exp $ */
/* /*
* Copyright (c) 1997 Charles D. Cranor and Washington University. * Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -35,7 +35,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_amap.c,v 1.102 2011/08/06 17:25:03 rmind Exp $"); __KERNEL_RCSID(0, "$NetBSD: uvm_amap.c,v 1.103 2011/08/17 20:46:27 rmind Exp $");
#include "opt_uvmhist.h" #include "opt_uvmhist.h"
@ -1039,17 +1039,11 @@ ReStart:
npg = NULL; npg = NULL;
} }
if (nanon == NULL || npg == NULL) { if (nanon == NULL || npg == NULL) {
amap_unlock(amap);
/*
* XXXCDC: we should cause fork to fail, but we can't.
*/
if (nanon) { if (nanon) {
nanon->an_ref--; nanon->an_ref--;
KASSERT(nanon->an_ref == 0); KASSERT(nanon->an_ref == 0);
uvm_anon_freelst(amap, nanon); uvm_anon_free(nanon);
} else {
amap_unlock(amap);
} }
uvm_wait("cownowpage"); uvm_wait("cownowpage");
goto ReStart; goto ReStart;