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pidns: use kzalloc when allocating new pid_namespace struct

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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>
This commit is contained in:
Pavel Emelyanov 2008-07-25 01:48:42 -07:00 committed by Linus Torvalds
parent 081e4c8a75
commit 84406c153a
1 changed files with 2 additions and 6 deletions
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8
kernel/pid_namespace.c
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@ -71,7 +71,7 @@ static struct pid_namespace *create_pid_namespace(unsigned int level)
struct pid_namespace *ns; struct pid_namespace *ns;
int i; int i;
ns = kmem_cache_alloc(pid_ns_cachep, GFP_KERNEL); ns = kmem_cache_zalloc(pid_ns_cachep, GFP_KERNEL);
if (ns == NULL) if (ns == NULL)
goto out; goto out;
@ -84,17 +84,13 @@ static struct pid_namespace *create_pid_namespace(unsigned int level)
goto out_free_map; goto out_free_map;
kref_init(&ns->kref); kref_init(&ns->kref);
ns->last_pid = 0;
ns->child_reaper = NULL;
ns->level = level; ns->level = level;
set_bit(0, ns->pidmap[0].page); set_bit(0, ns->pidmap[0].page);
atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1); atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1);
for (i = 1; i < PIDMAP_ENTRIES; i++) { for (i = 1; i < PIDMAP_ENTRIES; i++)
ns->pidmap[i].page = NULL;
atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE); atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE);
}
return ns; return ns;