Commit 90af90d7 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds

nsproxy: extract create_nsproxy()

clone_nsproxy() does useless copying of old nsproxy -- every pointer will
be rewritten to new ns or to old ns.  Remove copying, rename
clone_nsproxy(), create_nsproxy() will be used by C/R code to create fresh
nsproxy on restart.
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Acked-by: default avatarSerge Hallyn <serue@us.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 612ce478
......@@ -26,19 +26,14 @@ static struct kmem_cache *nsproxy_cachep;
struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy);
/*
* creates a copy of "orig" with refcount 1.
*/
static inline struct nsproxy *clone_nsproxy(struct nsproxy *orig)
static inline struct nsproxy *create_nsproxy(void)
{
struct nsproxy *ns;
struct nsproxy *nsproxy;
ns = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
if (ns) {
memcpy(ns, orig, sizeof(struct nsproxy));
atomic_set(&ns->count, 1);
}
return ns;
nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
if (nsproxy)
atomic_set(&nsproxy->count, 1);
return nsproxy;
}
/*
......@@ -52,7 +47,7 @@ static struct nsproxy *create_new_namespaces(unsigned long flags,
struct nsproxy *new_nsp;
int err;
new_nsp = clone_nsproxy(tsk->nsproxy);
new_nsp = create_nsproxy();
if (!new_nsp)
return ERR_PTR(-ENOMEM);
......
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