linux-kernel - Re: [PATCH] add check do_direct

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Message-Id: <20070731153410.fcbf9a1b.akpm@linux-foundation.org>
Date:	Tue, 31 Jul 2007 15:34:10 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Badari Pulavarty <pbadari@...ibm.com>
Cc:	Joe Jin <joe.jin@...cle.com>, Zach Brown <zach.brown@...cle.com>,
	gurudas pai <gurudas.pai@...cle.com>,
	torvalds@...ux-foundation.org, jens.axboe@...cle.com,
	lkml <linux-kernel@...r.kernel.org>, wen.gang.wang@...cle.com
Subject: Re: [PATCH] add check do_direct_IO() return val

On Tue, 31 Jul 2007 15:25:11 -0700
Badari Pulavarty <pbadari@...ibm.com> wrote:

> +	dio->map_bh.b_state = 0;

ho hum, thanks.

We zero out so many fields in there now that a kzalloc() might yield
a net gain.  0.000001% in an unnamed benchmark!
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