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Marek Olšák authored
Uploaded data must start at (stride * start), because we can't modify start in all cases. If it's the first allocation, it's also the amount of memory wasted. If the starting offset is larger than the size of the upload buffer, the buffer is re-created, used for 1 upload, and then thrown away. If the upload is small, most of the buffer space is unused and wasted. Keep doing that and the OOM killer comes. It's actually pretty quick. With signed VB offsets, we can set min_out_offset = 0 in u_upload_alloc/u_upload_data. This fixes OOM situations with SPECviewperf.
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