When adding sg_page_iter I haven't thought properly through the use case for sg lists w/o backing pages - which is specific to the i915 driver - so this patchset adds support for this. It applies on the i915 tree [1], where the iterator is in use already. [1] git://people.freedesktop.org/~danvet/drm-intel [nightly branch] Imre Deak (2): lib/scatterlist: sg_page_iter: support sg lists w/o backing pages Revert "drm/i915: set dummy page for stolen objects" drivers/gpu/drm/drm_cache.c | 2 +- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/i915_gem.c | 8 ++++---- drivers/gpu/drm/i915/i915_gem_dmabuf.c | 2 +- drivers/gpu/drm/i915/i915_gem_gtt.c | 6 ++---- drivers/gpu/drm/i915/i915_gem_stolen.c | 4 ++-- drivers/gpu/drm/i915/i915_gem_tiling.c | 4 ++-- include/linux/scatterlist.h | 28 +++++++++++++++++++++++----- lib/scatterlist.c | 4 +--- 9 files changed, 37 insertions(+), 23 deletions(-) -- 1.7.10.4
