- Modify vm_page_unwire() and vm_page_enqueue() to directly accept

  the queue where to enqueue pages that are going to be unwired.
- Add stronger checks to the enqueue/dequeue for the pagequeues when
  adding and removing pages to them.

Of course, for unmanaged pages the queue parameter of vm_page_unwire() will
be ignored, just as the active parameter today.
This makes adding new pagequeues quicker.

This change effectively modifies the KPI.  __FreeBSD_version will be,
however, bumped just when the full cache of free pages will be
evicted.

Sponsored by:	EMC / Isilon storage division
Reviewed by:	alc
Tested by:	pho

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/vm/vm_glue.c b/sys/vm/vm_glue.c
index 7d00097..d48de9e 100644
--- a/sys/vm/vm_glue.c
+++ b/sys/vm/vm_glue.c
@@ -418,7 +418,7 @@ vm_thread_stack_dispose(vm_object_t ksobj, vm_offset_t ks, int pages)
 		if (m == NULL)
 			panic("vm_thread_dispose: kstack already missing?");
 		vm_page_lock(m);
-		vm_page_unwire(m, 0);
+		vm_page_unwire(m, PQ_INACTIVE);
 		vm_page_free(m);
 		vm_page_unlock(m);
 	}
@@ -507,7 +507,7 @@ vm_thread_swapout(struct thread *td)
 			panic("vm_thread_swapout: kstack already missing?");
 		vm_page_dirty(m);
 		vm_page_lock(m);
-		vm_page_unwire(m, 0);
+		vm_page_unwire(m, PQ_INACTIVE);
 		vm_page_unlock(m);
 	}
 	VM_OBJECT_WUNLOCK(ksobj);