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Date:	Sun, 19 Oct 2014 07:51:38 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Dmitry Monakhov <dmonakhov@...nvz.org>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	viro@...iv.linux.org.uk, hch@...radead.org
Subject: Re: [PATCH 2/4] fs: add fadvise file_operation

On Sat, Oct 18, 2014 at 07:21:26PM +0400, Dmitry Monakhov wrote:
> sys_fadvise result in direct f_mode modification, which  may be not
> suitable for some unusual filesytems where file mode invariant is more
> complex. In order to support such filesystems we have to delegate fadvise
> logic to filesystem layer.

Is there a real use case for it?  So for it seems mostly about ecryptfs,
and even that use is lacking a proper explanation.

Also fadvice and set_flags seem entirely unrelated, I don't understand
why you're throwing fadvice in thise series.

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