Author: kib
Date: Tue May 24 19:20:30 2016
New Revision: 300622
URL: https://svnweb.freebsd.org/changeset/base/300622
Log:
In vm_page_cache(), only drop the vnode after radix insert failure
for empty page cache when the object type if OBJT_VNODE.
Reported and tested by: pho
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/vm/vm_page.c
Modified: head/sys/vm/vm_page.c
==============================================================================
--- head/sys/vm/vm_page.c Tue May 24 18:53:06 2016 (r300621)
+++ head/sys/vm/vm_page.c Tue May 24 19:20:30 2016 (r300622)
@@ -3290,7 +3290,8 @@ vm_page_cache(vm_page_t m)
cache_was_empty = vm_radix_is_empty(&object->cache);
if (vm_radix_insert(&object->cache, m)) {
mtx_unlock(&vm_page_queue_free_mtx);
- if (object->resident_page_count == 0)
+ if (object->type == OBJT_VNODE &&
+ object->resident_page_count == 0)
vdrop(object->handle);
m->object = NULL;
vm_page_free(m);
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