Eric Anholt 40123c1f8d drm/i915: Fix lock order reversal in shmem pwrite path.
Like the GTT pwrite path fix, this uses an optimistic path and a
fallback to get_user_pages.  Note that this means we have to stop using
vfs_write and roll it ourselves.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-27 14:47:13 -07:00
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