linux-kernel - Re: [PATCH] VFS: make file->f_pos access atomic on 32bit arch

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Message-ID: <58603.86657.qm@web26202.mail.ukl.yahoo.com>
Date:	Tue, 16 Sep 2008 11:11:59 +0000 (GMT)
From:	Michael Trimarchi <trimarchimichael@...oo.it>
To:	Hisashi Hifumi <hifumi.hisashi@....ntt.co.jp>,
	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] VFS: make file->f_pos access atomic on 32bit arch

Hi,




> +        if (offset != file_pos_read(file))
> +            file_pos_write(file, offset);
>         retval = offset;
>     }

Is not more efficient here a compare xchg operation?

Regards Michael

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