linux-kernel - Re: [PATCH 1/2] dcache: allow word-at-a-time name hashing with big-endian CPUs

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Date:	Thu, 12 Dec 2013 10:46:02 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Will Deacon <will.deacon@....com>
Cc:	linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 1/2] dcache: allow word-at-a-time name hashing with
 big-endian CPUs

> +#ifdef __BIG_ENDIAN
> +	mask = ~(~0ul >> tcount*8);
> +#else
>  	mask = ~(~0ul << tcount*8);
> +#endif
>  	return unlikely(!!((a ^ b) & mask));

> +#ifdef __BIG_ENDIAN
> +	mask = ~(~0ul >> len*8);
> +#else
>  	mask = ~(~0ul << len*8);
> +#endif

This should really be a common helper.
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