utsns: extract creeate_uts_ns()
create_uts_ns() will be used by C/R to create fresh uts_ns.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/utsname.c b/kernel/utsname.c
index 815237a..8a82b4b 100644
--- a/kernel/utsname.c
+++ b/kernel/utsname.c
@@ -15,6 +15,16 @@
#include <linux/err.h>
#include <linux/slab.h>
+static struct uts_namespace *create_uts_ns(void)
+{
+ struct uts_namespace *uts_ns;
+
+ uts_ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
+ if (uts_ns)
+ kref_init(&uts_ns->kref);
+ return uts_ns;
+}
+
/*
* Clone a new ns copying an original utsname, setting refcount to 1
* @old_ns: namespace to clone
@@ -24,14 +34,13 @@
{
struct uts_namespace *ns;
- ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
+ ns = create_uts_ns();
if (!ns)
return ERR_PTR(-ENOMEM);
down_read(&uts_sem);
memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
up_read(&uts_sem);
- kref_init(&ns->kref);
return ns;
}