Hi Jason, Sagi-
Hey Chuck,
As we discussed a few weeks ago, this patch series implements the following: - Send SGEs are now managed via lock-less, wait-free circular queues - Send SGEs referring to page cache pages are DMA unmapped during Send completion - Send completions are batched to reduce interrupts, but still provide a periodic heartbeat signal for SQ housekeeping - The circular queue prevents Send Queue overflow The purpose of this change is to address the issue Sagi reported where the HCA continues to retry a delayed Send request _after_ RPC completion, resulting in a DMA error.
Question, what happens in direct-io for example? Can a mapped buffer be reclaimed/free'd before the send completion arrives? -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
