linux-kernel - Re: [PATCH] staging/android: add flags member to sync ioctl structs

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Date:	Thu, 3 Mar 2016 22:01:12 +0200
From:	Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Gustavo Padovan <gustavo@...ovan.org>, devel@...verdev.osuosl.org,
	Daniel Stone <daniels@...labora.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Riley Andrews <riandrews@...roid.com>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Arve Hjønnevåg <arve@...roid.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	John Harrison <John.C.Harrison@...el.com>
Subject: Re: [PATCH] staging/android: add flags member to sync ioctl structs

On Thu, Mar 03, 2016 at 08:17:14AM -0800, Greg Kroah-Hartman wrote:
> On Thu, Mar 03, 2016 at 11:37:17AM -0300, Gustavo Padovan wrote:
> > From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
> > 
> > Play safe and add flags member to all structs. So we don't need to
> > break API or create new IOCTL in the future if new features that requires
> > flags arises.
> > 
> > v2: check if flags are valid (zero, in this case)
> > 
> > v3: return -EINVAL if flags are not zero'ed
> > 
> > v4: add padding for 64-bit alignment
> > 
> > v5: rebase to use only stacked sync_file_info
> 
> Why are these vX things here in the changelog?

That's how we usually roll in gpu land.

-- 
Ville Syrjälä
Intel OTC