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[src/trunk]: src/sys/fs/tmpfs tmpfs_reg_resize(): do nothing if newsize == ol...
details: https://anonhg.NetBSD.org/src/rev/aeebbcb002a0
branches: trunk
changeset: 970153:aeebbcb002a0
user: ad <ad%NetBSD.org@localhost>
date: Sat Mar 14 13:37:49 2020 +0000
description:
tmpfs_reg_resize(): do nothing if newsize == oldsize.
diffstat:
sys/fs/tmpfs/tmpfs_subr.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diffs (29 lines):
diff -r 9f964613940d -r aeebbcb002a0 sys/fs/tmpfs/tmpfs_subr.c
--- a/sys/fs/tmpfs/tmpfs_subr.c Sat Mar 14 13:34:43 2020 +0000
+++ b/sys/fs/tmpfs/tmpfs_subr.c Sat Mar 14 13:37:49 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tmpfs_subr.c,v 1.106 2020/02/23 15:46:40 ad Exp $ */
+/* $NetBSD: tmpfs_subr.c,v 1.107 2020/03/14 13:37:49 ad Exp $ */
/*
* Copyright (c) 2005-2013 The NetBSD Foundation, Inc.
@@ -73,7 +73,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tmpfs_subr.c,v 1.106 2020/02/23 15:46:40 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tmpfs_subr.c,v 1.107 2020/03/14 13:37:49 ad Exp $");
#include <sys/param.h>
#include <sys/cprng.h>
@@ -914,6 +914,10 @@
newpages = round_page(newsize) >> PAGE_SHIFT;
KASSERT(oldpages == node->tn_spec.tn_reg.tn_aobj_pages);
+ if (newsize == oldsize) {
+ return 0;
+ }
+
if (newpages > oldpages) {
/* Increase the used-memory counter if getting extra pages. */
if (!tmpfs_mem_incr(tmp, (newpages - oldpages) << PAGE_SHIFT)) {
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