diff --git a/share/man/man9/vm_page_io.9 b/share/man/man9/vm_page_io.9
index 396cb19..bddb82b 100644
--- a/share/man/man9/vm_page_io.9
+++ b/share/man/man9/vm_page_io.9
@@ -52,9 +52,9 @@ function lowers the busy count on the page by one, if the resulting busy
 count is zero, a
 .Xr wakeup 9
 will be issued if the page has been marked
-.Dv PG_WANTED .
+.Dv VPO_WANTED .
 A page is typically marked
-.Dv PG_WANTED
+.Dv VPO_WANTED
 by a thread to register its interest in
 the page to either complete I/O or becoming available for general use.
 .Sh AUTHORS
diff --git a/share/man/man9/vm_page_sleep_busy.9 b/share/man/man9/vm_page_sleep_busy.9
index 45aa977..6ccdf68 100644
--- a/share/man/man9/vm_page_sleep_busy.9
+++ b/share/man/man9/vm_page_sleep_busy.9
@@ -42,7 +42,7 @@
 The
 .Fn vm_page_sleep_busy
 function waits until the
-.Dv PG_BUSY
+.Dv VPO_BUSY
 flag is cleared.
 If
 .Fa also_m_busy
diff --git a/share/man/man9/vm_page_wakeup.9 b/share/man/man9/vm_page_wakeup.9
index adb03a1..75f0ca8 100644
--- a/share/man/man9/vm_page_wakeup.9
+++ b/share/man/man9/vm_page_wakeup.9
@@ -50,20 +50,20 @@ of a page.
 .Pp
 .Fn vm_page_busy
 sets the
-.Dv PG_BUSY
+.Dv VPO_BUSY
 flag in the page.
 .Pp
 .Fn vm_page_flash
 checks to see if there is anybody waiting on the page
-.Dv ( PG_WANTED
+.Dv ( VPO_WANTED
 will be set), and if so, clears the
-.Dv PG_WANTED
+.Dv VPO_WANTED
 flag and notifies whoever is waiting via
 .Fn wakeup .
 .Pp
 .Fn vm_page_wakeup
 clears the
-.Dv PG_BUSY
+.Dv VPO_BUSY
 flag on the page, and calls
 .Fn vm_page_flash
 in case somebody has been waiting for it.
diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c
index b359bd4..bea235a 100644
--- a/sys/vm/swap_pager.c
+++ b/sys/vm/swap_pager.c
@@ -1460,8 +1460,8 @@ swap_pager_putpages(vm_object_t object, vm_page_t *m, int count,
  *	Completion routine for asynchronous reads and writes from/to swap.
  *	Also called manually by synchronous code to finish up a bp.
  *
- *	For READ operations, the pages are PG_BUSY'd.  For WRITE operations, 
- *	the pages are vm_page_t->busy'd.  For READ operations, we PG_BUSY 
+ *	For READ operations, the pages are VPO_BUSY'd.  For WRITE operations, 
+ *	the pages are vm_page_t->busy'd.  For READ operations, we VPO_BUSY 
  *	unbusy all pages except the 'main' request page.  For WRITE 
  *	operations, we vm_page_t->busy'd unbusy all pages ( we can do this 
  *	because we marked them all VM_PAGER_PEND on return from putpages ).