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SubjectRe: [PATCH 08/12] netvm: Allow skb allocation to use PFMEMALLOC reserves
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From: Mel Gorman <mgorman@suse.de>
Date: Thu, 14 Apr 2011 11:41:34 +0100

> +extern int memalloc_socks;
> +static inline int sk_memalloc_socks(void)
> +{
> + return memalloc_socks;
> +}
> +
...
> +static DEFINE_MUTEX(memalloc_socks_lock);
> +int memalloc_socks __read_mostly;

Please use an atomic_t, it has to be more efficient than this mutex
business.


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