[PATCH] drm: serialize access to list of debugfs files

[Daniel Vetter]

On Mon, Oct 31, 2011 at 06:33:57PM +0100, Marcin Slusarz wrote:
> Nouveau, when configured with debugfs, creates debugfs files for every
> channel, so structure holding list of files needs to be protected from
> simultaneous changes by multiple threads.
> 
> Without this patch it's possible to hit kernel oops in
> drm_debugfs_remove_files just by running a couple of xterms with
> looped glxinfo.
> 
> Signed-off-by: Marcin Slusarz <marcin.slusarz at gmail.com>

And v2 also includes a nice comment in the header explaining the locking.
Awesome!
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
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