Module Name:    src
Committed By:   pooka
Date:           Tue Mar  1 15:14:35 UTC 2011

Modified Files:
        src/sys/rump/librump/rumpvfs: rumpfs.c

Log Message:
Reset node's parent pointer when it's removed.  Technically the
parent still exists, but allows us to avoid complicated g/c algorithms
if the parent *is* removed.


To generate a diff of this commit:
cvs rdiff -u -r1.91 -r1.92 src/sys/rump/librump/rumpvfs/rumpfs.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/rump/librump/rumpvfs/rumpfs.c
diff -u src/sys/rump/librump/rumpvfs/rumpfs.c:1.91 src/sys/rump/librump/rumpvfs/rumpfs.c:1.92
--- src/sys/rump/librump/rumpvfs/rumpfs.c:1.91	Wed Feb  2 15:58:09 2011
+++ src/sys/rump/librump/rumpvfs/rumpfs.c	Tue Mar  1 15:14:35 2011
@@ -1,4 +1,4 @@
-/*	$NetBSD: rumpfs.c,v 1.91 2011/02/02 15:58:09 pooka Exp $	*/
+/*	$NetBSD: rumpfs.c,v 1.92 2011/03/01 15:14:35 pooka Exp $	*/
 
 /*
  * Copyright (c) 2009, 2010 Antti Kantee.  All Rights Reserved.
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rumpfs.c,v 1.91 2011/02/02 15:58:09 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rumpfs.c,v 1.92 2011/03/01 15:14:35 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -733,8 +733,8 @@
 		goto getvnode;
 	} else {
 		if (dotdot) {
-			rn = rnd->rn_parent;
-			goto getvnode;
+			if ((rn = rnd->rn_parent) != NULL)
+				goto getvnode;
 		} else {
 			LIST_FOREACH(rd, &rnd->rn_dir, rd_entries) {
 				if (rd->rd_namelen == cnp->cn_namelen &&
@@ -927,6 +927,7 @@
 
 	freedir(rnd, cnp);
 	rn->rn_flags |= RUMPNODE_CANRECLAIM;
+	rn->rn_parent = NULL;
 
 out:
 	vput(dvp);

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