From ed469a63c37a996fa2c7041d2dc980715707902c Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Wed, 17 Jun 2009 16:27:52 -0700 Subject: [PATCH] pidns: make create_pid_namespace() accept parent pidns create_pid_namespace() creates everything, but caller has to assign parent pidns by hand, which is unnatural. At the moment of call new ->level has to be taken from somewhere and parent pidns is already available. Signed-off-by: Alexey Dobriyan Cc: Pavel Emelyanov Cc: "Eric W. Biederman" Acked-by: Serge Hallyn Acked-by: Sukadev Bhattiprolu Reviewed-by: WANG Cong Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/pid_namespace.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 2d1001b4858d..495d5dea22b2 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -67,9 +67,10 @@ err_alloc: return NULL; } -static struct pid_namespace *create_pid_namespace(unsigned int level) +static struct pid_namespace *create_pid_namespace(struct pid_namespace *parent_pid_ns) { struct pid_namespace *ns; + unsigned int level = parent_pid_ns->level + 1; int i; ns = kmem_cache_zalloc(pid_ns_cachep, GFP_KERNEL); @@ -86,6 +87,7 @@ static struct pid_namespace *create_pid_namespace(unsigned int level) kref_init(&ns->kref); ns->level = level; + ns->parent = get_pid_ns(parent_pid_ns); set_bit(0, ns->pidmap[0].page); atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1); @@ -125,9 +127,7 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old if (flags & CLONE_THREAD) goto out_put; - new_ns = create_pid_namespace(old_ns->level + 1); - if (!IS_ERR(new_ns)) - new_ns->parent = get_pid_ns(old_ns); + new_ns = create_pid_namespace(old_ns); out_put: put_pid_ns(old_ns); -- 2.20.1