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do not clean fictitious pages. from WS (sent a long time ago...)

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This commit is contained in:
cgd 1994-01-15 02:39:58 +00:00
parent 3fab097f5f
commit e69c297456
1 changed files with 3 additions and 3 deletions
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6
sys/vm/vm_object.c
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@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)vm_object.c 7.4 (Berkeley) 5/7/91
* $Id: vm_object.c,v 1.15 1994/01/08 04:59:08 mycroft Exp $
* $Id: vm_object.c,v 1.16 1994/01/15 02:39:58 cgd Exp $
*
*
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
@ -477,8 +477,8 @@ vm_object_page_clean(object, start, end)
again:
p = (vm_page_t) queue_first(&object->memq);
while (!queue_end(&object->memq, (queue_entry_t) p)) {
if (start == end ||
p->offset >= start && p->offset < end) {
if ((start == end || p->offset >= start && p->offset < end) &&
!(p->flags & PG_FICTITIOUS)) {
if ((p->flags & PG_CLEAN) &&
pmap_is_modified(VM_PAGE_TO_PHYS(p)))
p->flags &= ~PG_CLEAN;