linux-kernel - Re: It's time to hack on dentry

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Message-ID: <2c0942db0805070910w6b304d3cye8848d5c03462aa2@mail.gmail.com>
Date:	Wed, 7 May 2008 09:10:28 -0700
From:	"Ray Lee" <ray-lk@...rabbit.org>
To:	"Matthew Wilcox" <matthew@....cx>
Cc:	"rae l" <crquan@...il.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: It's time to hack on dentry_stat?

On Wed, May 7, 2008 at 8:25 AM, Matthew Wilcox <matthew@....cx> wrote:
> On Wed, May 07, 2008 at 08:08:09AM -0700, Ray Lee wrote:
>  > One could hardcode the output of the last three (four?) fields, yes?
>  > Slightly grotty, but if it comes with a decent memory savings...
>
>  How can it be a 'decent memory saving'?  There is exactly _one_ struct
>  dentry_stat_t in the entire kernel.  So you're talking about saving 4
>  ints, or 16 bytes.  Bet you it'd be more bytes to hardcode printing zero.

<shrug> Well, if there's one, then obviously there isn't. I'd assumed
it was a per-dentry overhead.
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