[RFC PATCH 6/8] clone a namespace containing shared/private/slave/unclone tree

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

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

RP

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

RP


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

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

Index: 2.6.12/fs/namespace.c
===================================================================
--- 2.6.12.orig/fs/namespace.c
+++ 2.6.12/fs/namespace.c
@@ -1685,6 +1685,12 @@ 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))
+			SET_MNT_PRIVATE(q);
+
 		if (fs) {
 			if (p == fs->rootmnt) {
 				rootmnt = p;
@@ -2054,6 +2060,8 @@ 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;
 	}