linux-kernel - Re: [PATCH] staging: lustre: headers: potential UAPI headers

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Date:   Sat, 21 Jan 2017 10:24:59 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     James Simmons <jsimmons@...radead.org>
Cc:     devel@...verdev.osuosl.org, Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH] staging: lustre: headers: potential UAPI headers

On Fri, Jan 20, 2017 at 11:33:11PM +0000, James Simmons wrote:
> 
> > > > On Mon, Dec 19, 2016 at 12:06:47PM -0500, James Simmons wrote:
> > > > > Not for landing. This is the purposed UAPI headers
> > > > > with the removal of unlikely and debugging macros.
> > > > > This is just for feedback to see if this is acceptable
> > > > > for the upstream client.
> > > > > 
> > > > > Signed-off-by: James Simmons <jsimmons@...radead.org>
> > > > > ---
> > > > >  .../lustre/lustre/include/lustre/lustre_fid.h      | 353 +++++++++++++++++++++
> > > > >  .../lustre/lustre/include/lustre/lustre_ostid.h    | 233 ++++++++++++++
> > > > 
> > > > Can you make a lustre "uapi" directory so we can see which files you
> > > > really want to be UAPI and which you don't as time goes on?
> > > 
> > > Where do you want them placed? In uapi/linux/lustre or uapi/lustre. Does
> > > it matter to you? The below was to forth coming UAPI headers which from
> > > your response you seem okay with in general.
> > 
> > How many .h files are there going to be?  It's just a single filesystem,
> > shouldn't you just need a single file?  If so, how about
> > 	drivers/staging/lustre/include/uapi/lustre.h
> > ?
> > 
> > If you really need multiple .h files, put them all in the same uapi/
> > directory with a lustre_ prefix, you don't need a whole subdir just for
> > yourself, right?
> 
> We have 12 UAPI headers and yes they all begin with lustre_*. Okay I will
> create a driver/staging/lustre/include/uapi/linux directory and start
> moving headers there.

12 seems like a lot just for a single, tiny, filesystem :)

But moving them all to a single directory will see where we can later
merge them together, sounds like a good plan.

thanks,

greg k-h