svn commit: r253587 - head/sys/vm

[Jeff Roberson]

Author: jeff
Date: Wed Jul 24 01:25:56 2013
New Revision: 253587
URL: http://svnweb.freebsd.org/changeset/base/253587

Log:
   - Remove the long obsolete 'vm_pageout_algorithm' experiment.
  
  Discussed with:	alc
  Sponsored by:	EMC / Isilon Storage Division

Modified:
  head/sys/vm/vm_pageout.c

Modified: head/sys/vm/vm_pageout.c
==============================================================================
--- head/sys/vm/vm_pageout.c	Wed Jul 24 01:08:45 2013	(r253586)
+++ head/sys/vm/vm_pageout.c	Wed Jul 24 01:25:56 2013	(r253587)
@@ -157,7 +157,6 @@ static int vm_pageout_stats;
 static int vm_pageout_stats_interval;
 static int vm_pageout_full_stats;
 static int vm_pageout_full_stats_interval;
-static int vm_pageout_algorithm;
 static int defer_swap_pageouts;
 static int disable_swap_pageouts;
 
@@ -169,9 +168,6 @@ static int vm_swap_enabled = 1;
 static int vm_swap_idle_enabled = 0;
 #endif
 
-SYSCTL_INT(_vm, VM_PAGEOUT_ALGORITHM, pageout_algorithm,
-	CTLFLAG_RW, &vm_pageout_algorithm, 0, "LRU page mgmt");
-
 SYSCTL_INT(_vm, OID_AUTO, max_launder,
 	CTLFLAG_RW, &vm_max_launder, 0, "Limit dirty flushes in pageout");
 
@@ -756,9 +752,7 @@ vm_pageout_object_deactivate_pages(pmap_
 				if (actcount == 0) {
 					p->act_count -= min(p->act_count,
 					    ACT_DECLINE);
-					if (!remove_mode &&
-					    (vm_pageout_algorithm ||
-					    p->act_count == 0)) {
+					if (!remove_mode && p->act_count == 0) {
 						pmap_remove_all(p);
 						vm_page_deactivate(p);
 					} else
@@ -1356,8 +1350,7 @@ relock_queues:
 			vm_page_requeue_locked(m);
 		else {
 			m->act_count -= min(m->act_count, ACT_DECLINE);
-			if (vm_pageout_algorithm ||
-			    object->ref_count == 0 ||
+			if (object->ref_count == 0 ||
 			    m->act_count == 0) {
 				page_shortage--;
 				/* Dequeue to avoid later lock recursion. */