From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: [PATCH RFC 1/2] RDMA/iser: limit sg tablesize on device fastreg max depth Date: Thu, 25 Jun 2015 10:39:17 -0500 Message-ID: <20150625153917.13272.52513.stgit@build.ogc.int> References: <20150625153754.13272.432.stgit@build.ogc.int> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150625153754.13272.432.stgit-T4OLL4TyM9aNDNWfRnPdfg@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, orgerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, raid-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org List-Id: linux-rdma@vger.kernel.org Signed-off-by: Steve Wise Tested-by: Vasu Dev --- drivers/infiniband/ulp/iser/iscsi_iser.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 6a594aa..ec692f7 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -640,6 +640,13 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, SHOST_DIX_GUARD_CRC); } + /* + * Limit the sg_tablesize based on the device max fastreg page + * list length. + */ + shost->sg_tablesize = min_t(u32, shost->sg_tablesize, + ib_conn->device->dev_attr.max_fast_reg_page_list_len); + if (iscsi_host_add(shost, ib_conn->device->ib_device->dma_device)) { mutex_unlock(&iser_conn->state_mutex); -- 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