svn commit: r303290 - in stable/11/sys: kern vm

[Konstantin Belousov]

Author: kib
Date: Mon Jul 25 13:28:59 2016
New Revision: 303290
URL: https://svnweb.freebsd.org/changeset/base/303290

Log:
  MFC r302567:
  In vgonel(), postpone setting BO_DEAD until VOP_RECLAIM() is called,
  if vnode is VMIO.  For VMIO vnodes, set BO_DEAD in vm_object_terminate().
  
  MFC r302580:
  Fix grammar.
  
  Approved by:	re (gjb)

Modified:
  stable/11/sys/kern/vfs_subr.c
  stable/11/sys/vm/vm_object.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/kern/vfs_subr.c
==============================================================================
--- stable/11/sys/kern/vfs_subr.c	Mon Jul 25 11:25:33 2016	(r303289)
+++ stable/11/sys/kern/vfs_subr.c	Mon Jul 25 13:28:59 2016	(r303290)
@@ -3232,7 +3232,13 @@ vgonel(struct vnode *vp)
 	    TAILQ_EMPTY(&vp->v_bufobj.bo_clean.bv_hd) &&
 	    vp->v_bufobj.bo_clean.bv_cnt == 0,
 	    ("vp %p bufobj not invalidated", vp));
-	vp->v_bufobj.bo_flag |= BO_DEAD;
+
+	/*
+	 * For VMIO bufobj, BO_DEAD is set in vm_object_terminate()
+	 * after the object's page queue is flushed.
+	 */
+	if (vp->v_bufobj.bo_object == NULL)
+		vp->v_bufobj.bo_flag |= BO_DEAD;
 	BO_UNLOCK(&vp->v_bufobj);
 
 	/*

Modified: stable/11/sys/vm/vm_object.c
==============================================================================
--- stable/11/sys/vm/vm_object.c	Mon Jul 25 11:25:33 2016	(r303289)
+++ stable/11/sys/vm/vm_object.c	Mon Jul 25 13:28:59 2016	(r303290)
@@ -741,6 +741,10 @@ vm_object_terminate(vm_object_t object)
 
 		vinvalbuf(vp, V_SAVE, 0, 0);
 
+		BO_LOCK(&vp->v_bufobj);
+		vp->v_bufobj.bo_flag |= BO_DEAD;
+		BO_UNLOCK(&vp->v_bufobj);
+
 		VM_OBJECT_WLOCK(object);
 	}