[Intel-gfx] [PATCH] i915: add page flipping ioctl

[Keith Packard]

On Wed, 2009-02-25 at 11:42 -0800, Jesse Barnes wrote:

> Ok, I'll pull that bit out...  but doing that introduces a small race.  If we 
> lose the race (the flip happens immediately and we get interrupted before 
> adding the object to the vblank queue) the object will be stalled for one 
> extra frame.

So wait for space, grab the lock, check for space again, and retry if
you fail, right?

-- 
keith.packard at intel.com
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