Re: [PATCH 02/25] vfs: vfs_clone_file_prep_inodes should return EINVAL for a clone from beyond EOF

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On Wed, Oct 10, 2018 at 09:12:30PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> vfs_clone_file_prep_inodes cannot return 0 if it is asked to remap from
> a zero byte file because that's what btrfs does.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---

Maybe it would be a good time to switch btrfs to use
vfs_clone_file_prep_inodes so that we don't have any discrepancies?

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>



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