linux-kernel - Re: [PATCH] vfs: does call expand

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Message-ID: <2375c9f90911180122p19030ea2gc395030178eb706d@mail.gmail.com>
Date:	Wed, 18 Nov 2009 17:22:17 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Liu Aleaxander <aleaxander@...il.com>
Cc:	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] vfs: does call expand_files when needed

On Wed, Nov 18, 2009 at 4:54 PM, Liu Aleaxander <aleaxander@...il.com> wrote:

<snip>

>
>>it's trivial, not so much an improvement, IMO.
> So, shouldn't we do the optimize when there is a way to do that?
>
> While, I don't think so. And BTW, it's not just a problem of
> optimization, but also make it be more sense: JUST call expand when
> need. I don't know why you are rejecting about this, especially it did
> optimized one call path(as you said), and it doesn't make the code
> uglier than before but making it be more sense, and, in fact, a kind
> of more readable.


I am not rejecting it, I said this is trivial, so accepting it or droping
it both are OK for me.

I don't think the orignal code is ugly, '< fdt->max_fds' is not checked
for expand_files(), but for find_next_zero_bit().
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