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drm/i915: fix scheduling while holding the new active list spinlock

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regression caused by commit 5e118f4139:
i915_gem_object_move_to_inactive() should be called in task context,
as it calls fput();

Signed-off-by: Shaohua Li<[email protected]>
[anholt: Add more detail to the comment about the lock break that's added]
Signed-off-by: Eric Anholt <[email protected]>
This commit is contained in:
Shaohua Li 2009-04-08 10:58:23 +08:00 • committed by Eric Anholt
commit 68c8434217
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/i915/i915_gem.c
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@ -1596,8 +1596,19 @@ i915_gem_retire_request(struct drm_device *dev,
if (obj->write_domain != 0)
i915_gem_object_move_to_flushing(obj);
else
else {
/* Take a reference on the object so it won't be
* freed while the spinlock is held. The list
* protection for this spinlock is safe when breaking
* the lock like this since the next thing we do
* is just get the head of the list again.
*/
drm_gem_object_reference(obj);
i915_gem_object_move_to_inactive(obj);
spin_unlock(&dev_priv->mm.active_list_lock);
drm_gem_object_unreference(obj);
spin_lock(&dev_priv->mm.active_list_lock);
}
}
out:
spin_unlock(&dev_priv->mm.active_list_lock);