svn commit: r301099 - stable/10/sys/vm

[Konstantin Belousov]

Author: kib
Date: Wed Jun  1 04:03:55 2016
New Revision: 301099
URL: https://svnweb.freebsd.org/changeset/base/301099

Log:
  MFC r300622:
  In vm_page_cache(), only drop the vnode after radix insert failure
  for empty page cache when the object type is OBJT_VNODE.

Modified:
  stable/10/sys/vm/vm_page.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/vm/vm_page.c
==============================================================================
--- stable/10/sys/vm/vm_page.c	Wed Jun  1 04:01:48 2016	(r301098)
+++ stable/10/sys/vm/vm_page.c	Wed Jun  1 04:03:55 2016	(r301099)
@@ -2582,7 +2582,8 @@ 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);