linux-kernel - Re: [patch 4/5] VFS: allow filesystems to implement atomic open+truncate

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Message-ID: <20070921124420.GB8088@infradead.org>
Date:	Fri, 21 Sep 2007 13:44:20 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	akpm@...ux-foundation.org, hch@...radead.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [patch 4/5] VFS: allow filesystems to implement atomic open+truncate

On Fri, Sep 21, 2007 at 02:23:47PM +0200, Miklos Szeredi wrote:
> From: Miklos Szeredi <mszeredi@...e.cz>
> 
> Add a new attribute flag ATTR_OPEN, with the meaning: "truncation was
> initiated by open() due to the O_TRUNC flag".
> 
> This way filesystems wanting to implement truncation within their
> ->open() method can ignore such truncate requests.
> 
> This is a quick & dirty hack, but it comes for free.

Fine with me as it doesn't cause any active harm, but expect this to
go away once the nfs intent mess is cleaned up and we'll get a real
method for this kind of thing.

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