[PATCH] c/r: alloc_pid() should return -ENOMEM on failure

[Oren Laadan]

Added, thanks.

Sukadev Bhattiprolu wrote:
> The clone_with_pids() patchset changed alloc_pid() to return an error
> code in the pointer. alloc_pid() should then return -ENOMEM rather than
> NULL when memory allocations fails.
> 
> Signed-off-by: Sukadev Bhattiprolu <sukadev at us.ibm.com>
> 
> Index: linux-cr/kernel/pid.c
> ===================================================================
> --- linux-cr.orig/kernel/pid.c	2009-08-19 12:43:45.000000000 -0700
> +++ linux-cr/kernel/pid.c	2009-08-19 12:45:33.000000000 -0700
> @@ -290,8 +290,10 @@
>  	int tpid;
>  
>  	pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);
> -	if (!pid)
> +	if (!pid) {
> +		pid = ERR_PTR(-ENOMEM);
>  		goto out;
> +	}
>  
>  	tmp = ns;
>  	for (i = ns->level; i >= 0; i--) {
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