I915_GFP_ALLOW_FAIL
p->page = vm_alloc_page(vm, gfp | I915_GFP_ALLOW_FAIL);
pt = kmalloc(sizeof(*pt), M_DRM, I915_GFP_ALLOW_FAIL);
pd = kzalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL);
I915_GFP_ALLOW_FAIL);