On Thu, Oct 13, 2016 at 10:04:03AM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
> *** BROKEN *** RFC only *** BROKEN ***
> In cases where it is hard to know to minimum numbers of ents
> table will need to hold at sg_alloc_time, and we end up with
> a table with unused sg entries at its end, this function will
> trim (free) the unused sg entry blocks and adjust the
> table->orig_nents down.

An alternative I had in mind, was to allocate the new chunks
iteratively, i.e. as we run out of room in i915_sg_add_page.

Chris Wilson, Intel Open Source Technology Centre
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