Author: kib
Date: Wed Jan 18 04:34:18 2012
New Revision: 230297
URL: http://svn.freebsd.org/changeset/base/230297
Log:
MFC r229495:
Do not restart the scan in vm_object_page_clean() on the object
generation change if requested mode is async.
Modified:
stable/9/sys/vm/vm_object.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/vm/vm_object.c
==============================================================================
--- stable/9/sys/vm/vm_object.c Wed Jan 18 04:12:32 2012 (r230296)
+++ stable/9/sys/vm/vm_object.c Wed Jan 18 04:34:18 2012 (r230297)
@@ -840,8 +840,12 @@ rescan:
if (p->valid == 0)
continue;
if (vm_page_sleep_if_busy(p, TRUE, "vpcwai")) {
- if (object->generation != curgeneration)
- goto rescan;
+ if (object->generation != curgeneration) {
+ if ((flags & OBJPC_SYNC) != 0)
+ goto rescan;
+ else
+ clearobjflags = 0;
+ }
np = vm_page_find_least(object, pi);
continue;
}
@@ -850,8 +854,12 @@ rescan:
n = vm_object_page_collect_flush(object, p, pagerflags,
flags, &clearobjflags);
- if (object->generation != curgeneration)
- goto rescan;
+ if (object->generation != curgeneration) {
+ if ((flags & OBJPC_SYNC) != 0)
+ goto rescan;
+ else
+ clearobjflags = 0;
+ }
/*
* If the VOP_PUTPAGES() did a truncated write, so
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