On Thu, Dec 10, 2015 at 06:51:24PM +0000, Dave Gordon wrote: > When creating a new (pageable) GEM object and filling it with data, we > must mark it as 'dirty', i.e. backing store is out-of-date w.r.t. the > newly-written content. This ensures that if the object is evicted under > memory pressure, its pages in the pagecache will be written to backing > store rather than discarded. > > Based on an original version by Alex Dai. > > Signed-off-by: Alex Dai <yu.dai@xxxxxxxxx> > Signed-off-by: Dave Gordon <david.s.gordon@xxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> I've made my peace with this patch finally. Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/i915_gem.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c > index 06a5f39..936f0a9 100644 > --- a/drivers/gpu/drm/i915/i915_gem.c > +++ b/drivers/gpu/drm/i915/i915_gem.c > @@ -5224,6 +5224,7 @@ i915_gem_object_create_from_data(struct drm_device *dev, > i915_gem_object_pin_pages(obj); > sg = obj->pages; > bytes = sg_copy_from_buffer(sg->sgl, sg->nents, (void *)data, size); > + obj->dirty = 1; /* Backing store is now out of date */ That seems like it would be better served as an improvement to the existing obj->dirty /** doc */ -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
