>From 653c53ba519ddc0b9a338b3ac7548a84c1384f0b Mon Sep 17 00:00:00 2001
From: Sergiu Ivanov <unlimitedscol...@gmail.com>
Date: Tue, 7 Jul 2009 13:34:32 +0000
Subject: [PATCH] Orphan the mountee.
* mount.c (start_mountee): Orphan the mountee immediately after
starting it.
(setup_unionmount): Drop the reference to the proxy node.
---
mount.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/mount.c b/mount.c
index f9a5257..c361f20 100644
--- a/mount.c
+++ b/mount.c
@@ -160,6 +160,16 @@ start_mountee (node_t * np, char * argz, size_t argz_len,
int flags,
call. */
err = file_set_translator (underlying_port, 0, FS_TRANS_SET, 0, argz,
argz_len, control, MACH_MSG_TYPE_COPY_SEND);
+ if (err)
+ {
+ port_dealloc (underlying_port);
+ return err;
+ }
+
+ /* Attempt to orphan the mountee so that we don't need to keep its
+ underlying node alive. */
+ err = file_set_translator (underlying_port, 0, FS_TRANS_SET |
FS_TRANS_ORPHAN, 0,
+ NULL, 0, control, MACH_MSG_TYPE_COPY_SEND);
port_dealloc (underlying_port);
if (err)
return err;
@@ -202,6 +212,9 @@ setup_unionmount (void)
err = start_mountee (unionmount_proxy, mountee_argz,
mountee_argz_len, O_READ, &mountee_port);
+ /* Drop our reference to the no longer required proxy node. */
+ netfs_nrele (unionmount_proxy);
+
/* A path equal to "\0" will mean that the current ULFS entry is the
mountee port. */
ulfs_register ("", 0, 0);
--
1.6.3.3
