On 10/11/20 2:21 PM, Douglas Gilbert wrote: > My testing suggests using a store built with sgl_alloc_order() *** is a > little faster but with a lower standard deviation (i.e. spread) on timings > from repeated tests. sgl_alloc_order() supports allocating SG-lists with higher order pages. Allocating such S/G-lists is a workaround for the segment count limitations of some DMA engines. Are you perhaps using sgl_alloc_order() for allocating long-living data buffers? sgl_alloc_order() was not intended to be used for that purpose. Anyway, if your use case can be implemented without introducing any drawbacks for other users, feel free to submit a patch. Thanks, Bart.
