[PATCH 04/18] drm/ast: Don't grab dev->struct_mutex for in mmap offset ioctl

[Thierry Reding]

On Thu, Jul 09, 2015 at 11:32:36PM +0200, Daniel Vetter wrote:
> Since David Herrmann's mmap vma manager rework we don't need to grab
> dev->struct_mutex any more to prevent races when looking up the mmap
> offset. Drop it and instead don't forget to use the unref_unlocked
> variant (since the drm core still cares).
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
>  drivers/gpu/drm/ast/ast_main.c | 16 +++++-----------
>  1 file changed, 5 insertions(+), 11 deletions(-)

Reviewed-by: Thierry Reding <treding at nvidia.com>
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