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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>
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081e4c8a75
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84406c153a
@ -71,7 +71,7 @@ static struct pid_namespace *create_pid_namespace(unsigned int level)
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struct pid_namespace *ns;
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struct pid_namespace *ns;
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int i;
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int i;
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ns = kmem_cache_alloc(pid_ns_cachep, GFP_KERNEL);
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ns = kmem_cache_zalloc(pid_ns_cachep, GFP_KERNEL);
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if (ns == NULL)
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if (ns == NULL)
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goto out;
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goto out;
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@ -84,17 +84,13 @@ static struct pid_namespace *create_pid_namespace(unsigned int level)
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goto out_free_map;
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goto out_free_map;
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kref_init(&ns->kref);
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kref_init(&ns->kref);
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ns->last_pid = 0;
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ns->child_reaper = NULL;
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ns->level = level;
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ns->level = level;
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set_bit(0, ns->pidmap[0].page);
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set_bit(0, ns->pidmap[0].page);
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atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1);
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atomic_set(&ns->pidmap[0].nr_free, BITS_PER_PAGE - 1);
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for (i = 1; i < PIDMAP_ENTRIES; i++) {
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for (i = 1; i < PIDMAP_ENTRIES; i++)
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ns->pidmap[i].page = NULL;
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atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE);
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atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE);
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}
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return ns;
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return ns;
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