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Subject[PATCH 3/5] NFS: Abstract out namespace initialisation
The attached patch abstracts out the namespace initialisation so that temporary
namespaces can be set up elsewhere.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 init-namespace-2616rc4.diff
fs/namespace.c | 8 +-------
include/linux/namespace.h | 15 +++++++++++++++
2 files changed, 16 insertions(+), 7 deletions(-)
diff -uNrp linux-2.6.16-rc4-getsb/include/linux/namespace.h linux-2.6.16-rc4-getsb-nfs/include/linux/namespace.h
--- linux-2.6.16-rc4-getsb/include/linux/namespace.h 2006-02-22 17:00:42.000000000 +0000
+++ linux-2.6.16-rc4-getsb-nfs/include/linux/namespace.h 2006-02-22 17:37:04.000000000 +0000
@@ -17,6 +17,21 @@ extern int copy_namespace(int, struct ta
extern void __put_namespace(struct namespace *namespace);
extern struct namespace *dup_namespace(struct task_struct *, struct fs_struct *);

+static inline void init_namespace(struct namespace *namespace,
+ struct vfsmount *mnt)
+{
+ atomic_set(&namespace->count, 1);
+ INIT_LIST_HEAD(&namespace->list);
+ init_waitqueue_head(&namespace->poll);
+ namespace->event = 0;
+ namespace->root = mnt;
+
+ if (mnt) {
+ list_add(&mnt->mnt_list, &namespace->list);
+ mnt->mnt_namespace = namespace;
+ }
+}
+
static inline void put_namespace(struct namespace *namespace)
{
if (atomic_dec_and_lock(&namespace->count, &vfsmount_lock))
diff -uNrp linux-2.6.16-rc4-getsb/fs/namespace.c linux-2.6.16-rc4-getsb-nfs/fs/namespace.c
--- linux-2.6.16-rc4-getsb/fs/namespace.c 2006-02-22 17:00:37.000000000 +0000
+++ linux-2.6.16-rc4-getsb-nfs/fs/namespace.c 2006-02-22 18:21:52.000000000 +0000
@@ -1679,13 +1679,7 @@ static void __init init_mount_tree(void)
namespace = kmalloc(sizeof(*namespace), GFP_KERNEL);
if (!namespace)
panic("Can't allocate initial namespace");
- atomic_set(&namespace->count, 1);
- INIT_LIST_HEAD(&namespace->list);
- init_waitqueue_head(&namespace->poll);
- namespace->event = 0;
- list_add(&mnt->mnt_list, &namespace->list);
- namespace->root = mnt;
- mnt->mnt_namespace = namespace;
+ init_namespace(namespace, mnt);

init_task.namespace = namespace;
read_lock(&tasklist_lock);
-
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