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Date: Sat, 17 Jun 2017 03:03:09 -0700
From: Christoph Hellwig <hch@infradead.org>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Andreas Dilger <adilger@dilger.ca>,
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Subject: Re: [PATCH 1/1] [RFC] 64bit copy_file_range system call
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On Fri, Jun 16, 2017 at 01:36:30PM -0400, J. Bruce Fields wrote:
> It makes a difference in the clone case, doesn't it?  (Though I'd think
> best there would be a special "copy to end of file" value.)

Clones uses a 0 length as "whole" file.  Both for the NFS operation
and the Linux ioctl.