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drm/i915: Rearrange acquisition of mutex during pwrite
authorChris Wilson <chris@chris-wilson.co.uk>
Thu, 14 Oct 2010 14:03:58 +0000 (15:03 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 19 Oct 2010 08:19:47 +0000 (09:19 +0100)
... to avoid reacquiring it to drop the object reference count on
exit. Note we have to make sure we now drop (and reacquire) the lock
around acquiring the mm semaphore on the slow paths.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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