From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: NFSoRDMA Fails for max_sge Less Than 18 Date: Wed, 11 Jan 2017 14:11:23 -0700 Message-ID: <20170111211123.GD28917@obsidianresearch.com> References: <027101d26c2c$c94467f0$5bcd37d0$@opengridcomputing.com> <28B0D906-7BDB-4B87-94E9-6BE263BFBFF7@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <28B0D906-7BDB-4B87-94E9-6BE263BFBFF7-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Chuck Lever Cc: Steve Wise , "Amrani, Ram" , "Elior, Ariel" , "Kalderon, Michal" , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Hariprasad S , Faisal Latif , Doug Ledford List-Id: linux-rdma@vger.kernel.org On Wed, Jan 11, 2017 at 02:40:37PM -0500, Chuck Lever wrote: > It might be cool to have an API similar to rdma_rw that allows ULPs > to use a scatterlist for Send and Receive operations. It could hide > the driver and device maximum SGE values. That would be good, it could bounce buffer, build temporary MRs, or repeat RDMA WRITE/READ as appropriate.. The ULP really is not the right place to put this trade off logic since it will be very device specific.. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html