[PATCHSET] support FSCTL_DUPLICATE_EXTENTS_TO_FILE

[David Disseldorp]

On Mon, 8 May 2017 11:05:38 +0200, Ralph Böhme wrote:

> On Mon, May 08, 2017 at 02:22:11AM +0200, David Disseldorp wrote:
> > Thanks a lot for the review, Ralph!
> > 
> > Please find a version 2 patchset attached. Further comments below...  
> 
> better, but now it has a memory leak. :)

Ah, I take it you mean the free of the subreq before it's cleaned up by
the parent req. Following convention we should then also do the same in
smb2_ioctl_filesys_dup_extents_done().

> Fix for that and an additional fixup attached.

Looks good - please find one further patch attached, which I'll squash
in if you're okay with it.

...

> > > I don't see clone-range on the wire, trace attached. Am I missing something?  
> > 
> > Interesting, thanks for checking this. I've been using the cifs.ko
> > client until now.  
> 
> ah, ok. Which kernel version do I need? I have 4.10.13-200.fc25.x86_64

It went in with 02b1666544c08e245cb4e2253ed575f8128943d6, which was
first carried in 4.2, so cp --reflink should trigger it on your system.

Cheers, David

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