Re: [PATCH] ioctl_ficlonerange.2/ioctl_fideduperange.2: mention same-fs requirement

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On 06/08/2016 06:40 PM, Darrick J. Wong wrote:
> Mention that FICLONE, FICLONERANGE, and FIDEDUPERANGE all require both
> files to reside on the same filesystem.

Thanks, Darrick. Applied.

I sees there's also some small problems with the page licenses in these
two new pages: the markup "VERBATIM" is wrong. And you don't mention 
the GPL version.

Can I suggest either changing the license to the real "verbatim" 
license (https://www.kernel.org/doc/man-pages/licenses.html#verbatim),
or to a GPL with version (see 
https://www.kernel.org/doc/man-pages/licenses.html#gpl

Cheers,

Michael


> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
>  man2/ioctl_ficlonerange.2  |    1 +
>  man2/ioctl_fideduperange.2 |    1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/man2/ioctl_ficlonerange.2 b/man2/ioctl_ficlonerange.2
> index 0cb1567..c6e0762 100644
> --- a/man2/ioctl_ficlonerange.2
> +++ b/man2/ioctl_ficlonerange.2
> @@ -36,6 +36,7 @@ file appear in the
>  .I dest_fd
>  file by sharing the underlying storage, which is faster than making a separate
>  physical copy of the data.
> +Both files must reside within the same filesystem.
>  If a file write should occur to a shared region,
>  the filesystem must ensure that the changes remain private to the file being
>  written.
> diff --git a/man2/ioctl_fideduperange.2 b/man2/ioctl_fideduperange.2
> index c69f8c5..44a7765 100644
> --- a/man2/ioctl_fideduperange.2
> +++ b/man2/ioctl_fideduperange.2
> @@ -34,6 +34,7 @@ file appear in the
>  .B dest_fd
>  file by sharing the underlying storage if the file data is identical
>  ("deduplication").
> +Both files must reside within the same filesystem.
>  This reduces storage consumption by allowing the filesystem
>  to store one shared copy of the data.
>  If a file write should occur to a shared
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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