John, > Currently we allocate 3 sets of DMA memories from separate > pools for each slot. This is inefficient in terms of memory usage > (buffers are less than 1 page in size, so we lose due to alignment), > and also time spent in doing 3 allocations + de-allocations per slot, > instead of 1. > > To optimise, combine the 3 DMA buffers into a single buffer from a > single pool.
Applied to 4.13/scsi-queue. Thank you! -- Martin K. Petersen Oracle Linux Engineering
