pidns: use kzalloc when allocating new pid_namespace struct
It makes many fields initialization implicit helping in auto-setting
#ifdef-ed fields (bsd-acct related pointer will be such).
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 98702b4..06331cc 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -71,7 +71,7 @@
struct pid_namespace *ns;
int i;
- ns = kmem_cache_alloc(pid_ns_cachep, GFP_KERNEL);
+ ns = kmem_cache_zalloc(pid_ns_cachep, GFP_KERNEL);
if (ns == NULL)
goto out;
@@ -84,17 +84,13 @@
goto out_free_map;
kref_init(&ns->kref);
- ns->last_pid = 0;
- ns->child_reaper = NULL;
ns->level = level;
set_bit(0, ns->pidmap[0].page);
atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1);
- for (i = 1; i < PIDMAP_ENTRIES; i++) {
- ns->pidmap[i].page = NULL;
+ for (i = 1; i < PIDMAP_ENTRIES; i++)
atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE);
- }
return ns;