linux-kernel - Re: linux-next: manual merge of the vfs tree with the aio-direct tree

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Date:	Wed, 18 Sep 2013 10:06:30 -0700
From:	Zach Brown <zab@...hat.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Dave Kleikamp <dave.kleikamp@...cle.com>
Subject: Re: linux-next: manual merge of the vfs tree with the aio-direct tree

> As for aio-direct...  Two questions:
> 	* had anybody tried to measure the effect on branch predictor from
> introducing that method vector?  Commit d6afd4c4 ("iov_iter: hide iovec
> details behind ops function pointers")

FWIW, I never did.  I only went that route to begin with because the few
alternatives I tried before that were even more ugly :(.  It's been long
enough that I can't quite remember what I'd tried, though.

- z
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