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From: John Baldwin <jhb@FreeBSD.org>
Date: Fri, 29 Apr 2016 17:35:28 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r298790 - head/sys/vm
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Author: jhb
Date: Fri Apr 29 17:35:28 2016
New Revision: 298790
URL: https://svnweb.freebsd.org/changeset/base/298790

Log:
  Don't require write locks on the VM object for vm_page_prev/next.
  
  Reviewed by:	kib
  Sponsored by:	Chelsio Communications

Modified:
  head/sys/vm/vm_page.c

Modified: head/sys/vm/vm_page.c
==============================================================================
--- head/sys/vm/vm_page.c	Fri Apr 29 16:32:28 2016	(r298789)
+++ head/sys/vm/vm_page.c	Fri Apr 29 17:35:28 2016	(r298790)
@@ -1283,7 +1283,7 @@ vm_page_next(vm_page_t m)
 {
 	vm_page_t next;
 
-	VM_OBJECT_ASSERT_WLOCKED(m->object);
+	VM_OBJECT_ASSERT_LOCKED(m->object);
 	if ((next = TAILQ_NEXT(m, listq)) != NULL &&
 	    next->pindex != m->pindex + 1)
 		next = NULL;
@@ -1301,7 +1301,7 @@ vm_page_prev(vm_page_t m)
 {
 	vm_page_t prev;
 
-	VM_OBJECT_ASSERT_WLOCKED(m->object);
+	VM_OBJECT_ASSERT_LOCKED(m->object);
 	if ((prev = TAILQ_PREV(m, pglist, listq)) != NULL &&
 	    prev->pindex != m->pindex - 1)
 		prev = NULL;