kernel: pid_namespace: use NULL instead of using plain integer as pointer
This fixes the following sparse warnings: kernel/pid_namespace.c:55:77: warning: Using plain integer as NULL pointer Link: https://lkml.kernel.org/r/1647944288-2806-1-git-send-email-baihaowen@meizu.com Signed-off-by: Haowen Bai <baihaowen@meizu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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kernel
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@ -52,7 +52,7 @@ static struct kmem_cache *create_pid_cachep(unsigned int level)
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/* Name collision forces to do allocation under mutex. */
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if (!*pkc)
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*pkc = kmem_cache_create(name, len, 0,
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SLAB_HWCACHE_ALIGN | SLAB_ACCOUNT, 0);
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SLAB_HWCACHE_ALIGN | SLAB_ACCOUNT, NULL);
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mutex_unlock(&pid_caches_mutex);
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/* current can fail, but someone else can succeed. */
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return READ_ONCE(*pkc);
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