[RFC-2 PATCH 6/8] shared subtree

[Ram Pai <linuxram@us.ibm.com>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: namespace.patch --]
[-- Type: text/x-patch; name=namespace.patch, Size: 976 bytes --]

Adds ability to clone a namespace that has shared/private/slave/unclone
subtrees in it.

RP


Signed by Ram Pai (linuxram@us.ibm.com)

 fs/namespace.c |    9 +++++++++
 1 files changed, 9 insertions(+)

Index: 2.6.12.work1/fs/namespace.c
===================================================================
--- 2.6.12.work1.orig/fs/namespace.c
+++ 2.6.12.work1/fs/namespace.c
@@ -1763,6 +1763,13 @@ int copy_namespace(int flags, struct tas
 	q = new_ns->root;
 	while (p) {
 		q->mnt_namespace = new_ns;
+
+		if (IS_MNT_SHARED(q))
+			pnode_add_member_mnt(q->mnt_pnode, q);
+		else if (IS_MNT_SLAVE(q))
+			pnode_add_slave_mnt(q->mnt_pnode, q);
+		put_pnode(q->mnt_pnode);
+
 		if (fs) {
 			if (p == fs->rootmnt) {
 				rootmnt = p;
@@ -2129,6 +2136,8 @@ void __put_namespace(struct namespace *n
 	spin_lock(&vfsmount_lock);
 
 	list_for_each_entry(mnt, &namespace->list, mnt_list) {
+		if (mnt->mnt_pnode)
+			pnode_disassociate_mnt(mnt);
 		mnt->mnt_namespace = NULL;
 	}