[LTP] copy_file_range() errno changes introduced in v5.3-rc1

[Darrick J. Wong]

On Thu, Sep 26, 2019 at 05:56:08PM +0200, Petr Vorel wrote:
> Hi Amir,
> 
> I'm going to fix LTP test copy_file_range02 before upcoming LTP release.
> There are some returning errno changes introduced in v5.3-rc1, part of commit 40f06c799539
> ("Merge tag 'copy-file-range-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux").
> These changes looks pretty obvious as wanted, but can you please confirm it they were intentional?
> 
> * 5dae222a5ff0 ("vfs: allow copy_file_range to copy across devices") started to return -EXDEV.
> * 96e6e8f4a68d ("vfs: add missing checks to copy_file_range") started to return -EPERM, -ETXTBSY, -EOVERFLOW.

I'm not Amir, but by my recollection, yes, those are intentional. :)

--D

> Thanks for info.
> 
> Kind regards,
> Petr