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Fixed object cache trimming policy so it actually works.

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Submitted by:	John Dyson
This commit is contained in:
David Greenman 1994-10-23 21:03:09 +00:00
parent 389918ee95
commit e8fbe458e4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=3815
1 changed files with 5 additions and 7 deletions
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12
sys/vm/vm_pageout.c
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@ -65,7 +65,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_pageout.c,v 1.20 1994/10/22 02:18:03 davidg Exp $
* $Id: vm_pageout.c,v 1.21 1994/10/23 20:53:33 davidg Exp $
*/
/*
@ -511,26 +511,24 @@ vm_pageout_scan()
cache_size = orig_cache_size;
object = vm_object_cached_list.tqh_first;
vm_object_cache_lock();
while ( object && (cnt.v_inactive_count < cnt.v_inactive_target) &&
(cache_size >= (vm_swap_size?vm_desired_cache_size:0))) {
while ( object && (cnt.v_inactive_count < cnt.v_inactive_target)) {
vm_object_cache_unlock();
/*
* if there are no resident pages -- get rid of the object
*/
if( object->resident_page_count == 0) {
if (object != vm_object_lookup(object->pager))
panic("vm_object_deactivate: I'm sooo confused.");
panic("vm_pageout_scan: I'm sooo confused.");
pager_cache(object, FALSE);
goto redeact;
} else {
} else if( cache_size >= (vm_swap_size?vm_desired_cache_size:0)) {
/*
* if there are resident pages -- deactivate them
*/
vm_object_deactivate_pages(object);
cache_size -= object->resident_page_count;
object = object->cached_list.tqe_next;
}
object = object->cached_list.tqe_next;
vm_object_cache_lock();
}