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From: David Howells <dhowells@redhat.com>
To: Andrew Morton <akpm@osdl.org>
Cc: torvalds@osdl.org, davidm@snapgear.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] BDI: Provide backing device capability information
Date: Mon, 07 Mar 2005 12:25:18 +0000	[thread overview]
Message-ID: <10449.1110198318@redhat.com> (raw)
In-Reply-To: <20050307041047.59c24dec.akpm@osdl.org>

Andrew Morton <akpm@osdl.org> wrote:

> > Making it unsigned long on a 32-bit machine will make no
> > difference. Making it unsigned int on a 64-bit machine will waste four
> > bytes.
> 
> No, it won't waste any bytes at all.  It won't save any either.
> 
> But if someone comes along later and wants to add another int to that
> structure, they won't know that your field was needlessly made a long, and
> they'll then waste another eight bytes.

Okay... Fair enough.

David

  reply	other threads:[~2005-03-07 12:25 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-02 15:50 Improving mmap() support for !MMU further David Howells
2005-03-02 17:07 ` Andrew Morton
2005-03-02 21:34   ` [PATCH 1/2] BDI: Provide backing device capability information David Howells
2005-03-02 21:51     ` Andrew Morton
2005-03-02 22:28       ` Linus Torvalds
2005-03-02 22:39         ` Andrew Morton
2005-03-03 13:42           ` David Howells
2005-03-03 20:33             ` Andrew Morton
2005-03-03 13:38       ` David Howells
2005-03-03 20:34         ` Andrew Morton
2005-03-07 11:23           ` David Howells
2005-03-07 11:37             ` Andrew Morton
2005-03-07 11:43               ` David Howells
2005-03-07 11:47                 ` Andrew Morton
2005-03-07 11:51                   ` David Howells
2005-03-07 12:10                     ` Andrew Morton
2005-03-07 12:25                       ` David Howells [this message]
2005-03-07 14:05                       ` David Howells
2005-03-07 15:21                         ` Miklos Szeredi
2005-03-07 15:41                           ` David Howells
2005-03-07 15:45                             ` Miklos Szeredi
2005-03-07 16:06                               ` David Howells
2005-03-07 16:15                                 ` Miklos Szeredi
2005-03-07 20:14                                   ` Andrew Morton
2005-03-08 14:12                                     ` [PATCH 1/2] BDI: Provide backing device capability information [try #3] David Howells
2005-03-09  0:37                                       ` Andrew Morton
2005-03-09 10:27                                         ` David Howells
2005-03-02 21:41   ` [PATCH 2/2] BDI: Improve nommu mmap support David Howells

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