From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH v4 1/5] staging/android: add num_fences field to struct
 sync_file_info
Date: Tue, 1 Mar 2016 09:36:10 +0300
Message-ID: <20160301063610.GY32153@mwanda>
References: <1456511507-2534-1-git-send-email-gustavo@padovan.org>
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To: Gustavo Padovan <gustavo@padovan.org>
Cc: devel@driverdev.osuosl.org, Daniel Stone <daniels@collabora.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Riley Andrews <riandrews@android.com>, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Rob Clark <robdclark@gmail.com>, Greg Hackmann <ghackmann@google.com>, Arve =?iso-8859-1?B?SGr4bm5lduVn?= <arve@android.com>, Daniel Vetter <daniel.vetter@ffwll.ch>, Gustavo Padovan <gustavo.padovan@collabora.co.uk>, John Harrison <John.C.Harrison@Intel.com>
List-Id: dri-devel@lists.freedesktop.org

This breaks userspace.  You used to be able to figure it out from
info->len - sizeof(struct sync_file_info).

regards,
dan carpenter