From: James Smart <jsmart2021@gmail.com>
Date: Mon, 23 Oct 2017 15:11:36 -0700
Subject: nvme-fc: remove NVME_FC_MAX_SEGMENTS
Patch-mainline: v4.15-rc1
Git-commit: ecad0d2cb8a7997afdc95031ee3328b997aba5c4
References: FATE#323952, FATE#322506

The define is an arbitrary limit to the io size on the initiator,
capping the io to 1MB-4KB.

Remove the define from the transport. I/O size will solely be limited
by the LLDD sg limits.

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/nvme/host/fc.c         |    6 ++----
 include/linux/nvme-fc-driver.h |    2 --
 2 files changed, 2 insertions(+), 6 deletions(-)

--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2435,7 +2435,6 @@ static int
 nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
 {
 	struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
-	u32 segs;
 	int ret;
 	bool changed;
 
@@ -2486,9 +2485,8 @@ nvme_fc_create_association(struct nvme_f
 	if (ret)
 		goto out_disconnect_admin_queue;
 
-	segs = min_t(u32, NVME_FC_MAX_SEGMENTS,
-			ctrl->lport->ops->max_sgl_segments);
-	ctrl->ctrl.max_hw_sectors = (segs - 1) << (PAGE_SHIFT - 9);
+	ctrl->ctrl.max_hw_sectors =
+		(ctrl->lport->ops->max_sgl_segments - 1) << (PAGE_SHIFT - 9);
 
 	ret = nvme_init_identify(&ctrl->ctrl);
 	if (ret)
--- a/include/linux/nvme-fc-driver.h
+++ b/include/linux/nvme-fc-driver.h
@@ -102,8 +102,6 @@ enum nvmefc_fcp_datadir {
 };
 
 
-#define NVME_FC_MAX_SEGMENTS		256
-
 /**
  * struct nvmefc_fcp_req - Request structure passed from NVME-FC transport
  *                         to LLDD in order to perform a NVME FCP IO operation.