On Sun, Jun 28, 2020 at 06:34:46PM +0800, Baolin Wang wrote: > Move the sg table allocation and free into the init_request() and > exit_request(), instead of allocating sg table when queuing requests, > which can benefit the IO performance.
If you want to pre-allocate something per-request, you can add the size to the tagset's cmd_size. But this is adding almost 4k per request. Considering how many requests we try to allocate, that's a bit too large to count on being available or sequestor for this driver.
