[src/trunk]: src/sys/uvm uvm_aio_aiodone_pages(): only call uvm_pageout_done(...

[ad <ad%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/944b3469ede7
branches:  trunk
changeset: 931010:944b3469ede7
user:      ad <ad%NetBSD.org@localhost>
date:      Sun Apr 19 21:53:38 2020 +0000

description:
uvm_aio_aiodone_pages(): only call uvm_pageout_done() if work was done for
the page daemon.

diffstat:

 sys/uvm/uvm_pager.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r af3a7a95feb9 -r 944b3469ede7 sys/uvm/uvm_pager.c
--- a/sys/uvm/uvm_pager.c       Sun Apr 19 21:37:00 2020 +0000
+++ b/sys/uvm/uvm_pager.c       Sun Apr 19 21:53:38 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_pager.c,v 1.124 2020/04/07 19:15:23 ad Exp $       */
+/*     $NetBSD: uvm_pager.c,v 1.125 2020/04/19 21:53:38 ad Exp $       */
 
 /*
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_pager.c,v 1.124 2020/04/07 19:15:23 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_pager.c,v 1.125 2020/04/19 21:53:38 ad Exp $");
 
 #include "opt_uvmhist.h"
 #include "opt_readahead.h"
@@ -487,7 +487,9 @@
                }
 #endif /* defined(VMSWAP) */
        }
-       uvm_pageout_done(pageout_done);
+       if (pageout_done != 0) {
+               uvm_pageout_done(pageout_done);
+       }
        if (!swap) {
                uvm_page_unbusy(pgs, npages);
                rw_exit(slock);