From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurence Oberman Subject: Re: [PATCH v3 0/5] Reduce RDMA RW API SGE limit Date: Tue, 19 Jul 2016 13:14:45 -0400 (EDT) Message-ID: <1465736110.5730453.1468948485702.JavaMail.zimbra@redhat.com> References: <8fb358c3-3504-02ca-fcb8-1624f28be1b0@sandisk.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <8fb358c3-3504-02ca-fcb8-1624f28be1b0-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Bart Van Assche Cc: Doug Ledford , Christoph Hellwig , Sagi Grimberg , Steve Wise , Parav Pandit , "Nicholas A. Bellinger" , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org ----- Original Message ----- > From: "Bart Van Assche" > To: "Doug Ledford" > Cc: "Christoph Hellwig" , "Sagi Grimberg" , "Steve Wise" , > "Parav Pandit" , "Laurence Oberman" , "Nicholas A. Bellinger" > , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > Sent: Tuesday, July 19, 2016 12:20:45 PM > Subject: [PATCH v3 0/5] Reduce RDMA RW API SGE limit > > Hello Doug, > > The five patches in this series modify the RDMA RW API slightly. This is > needed to avoid that the SRP and iSER target drivers submit RDMA > requests with an SGE list that exceeds the queue pair limits. The > ib_srpt changes in this series have been tested but the ib_isert changes > not yet. > > The changes compared to v2 of this patch series are: > * For RDMA READs, limit SGE back to dev->attrs.max_sge_rd for iWARP. > > Changes compared to v1: > * max_send_sge is now stored in struct ib_qp. This greatly simplifies > this patch series. > * An unneeded initialization that I had added to rdma_rw_init_one_mr() > has been left out again. > * Corrected "Fixes" tag in the patch description where needed. > > The individual patches in this series are: > > 0001-IB-core-Make-rdma_rw_ctx_init-initialize-all-used-fi.patch > 0002-IB-core-RDMA-RW-API-Do-not-exceed-QP-SGE-send-limit.patch > 0003-IB-srpt-Limit-the-number-of-SG-elements-per-work-req.patch > 0004-IB-srpt-Simplify-srpt_queue_response.patch > 0005-IB-isert-Remove-an-unused-member-variable.patch > > Thanks, > > Bart. > -- > 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 > Will pull and test these ASAP. Thanks Laurence -- 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