From: Keith Busch <kbusch@kernel.org>
Date: Thu, 9 Apr 2020 09:09:07 -0700
Subject: [PATCH] nvme: revalidate namespace stream parameters
Git-commit: bc1af009a8ed99aac86ee44a711c4a406ed74263
Patch-mainline: v5.8-rc1
References: bsc#1159058

The stream parameters are based on the currently formatted logical block
size. Recheck these parameters on namespace revalidation so the
registered constraints will be accurate.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/nvme/host/core.c | 54 ++++++++++++++++++++++++------------------------
 1 file changed, 27 insertions(+), 27 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 2279557d7361..86ca33b3873f 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1810,6 +1810,32 @@ static bool nvme_ns_ids_equal(struct nvme_ns_ids *a, struct nvme_ns_ids *b)
 		memcmp(&a->eui64, &b->eui64, sizeof(a->eui64)) == 0;
 }
 
+static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns)
+{
+	struct streams_directive_params s;
+	int ret;
+
+	if (!ctrl->nr_streams)
+		return 0;
+
+	ret = nvme_get_stream_params(ctrl, &s, ns->head->ns_id);
+	if (ret)
+		return ret;
+
+	ns->sws = le32_to_cpu(s.sws);
+	ns->sgs = le16_to_cpu(s.sgs);
+
+	if (ns->sws) {
+		unsigned int bs = 1 << ns->lba_shift;
+
+		blk_queue_io_min(ns->queue, bs * ns->sws);
+		if (ns->sgs)
+			blk_queue_io_opt(ns->queue, bs * ns->sws * ns->sgs);
+	}
+
+	return 0;
+}
+
 static void nvme_update_disk_info(struct gendisk *disk,
 		struct nvme_ns *ns, struct nvme_id_ns *id)
 {
@@ -1824,6 +1850,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
 	blk_mq_freeze_queue(disk->queue);
 	blk_integrity_unregister(disk);
 
+	nvme_setup_streams_ns(ns->ctrl, ns);
 	if (id->nabo == 0) {
 		/*
 		 * Bit 1 indicates whether NAWUPF is defined for this namespace
@@ -3546,32 +3573,6 @@ static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	return ret;
 }
 
-static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns)
-{
-	struct streams_directive_params s;
-	int ret;
-
-	if (!ctrl->nr_streams)
-		return 0;
-
-	ret = nvme_get_stream_params(ctrl, &s, ns->head->ns_id);
-	if (ret)
-		return ret;
-
-	ns->sws = le32_to_cpu(s.sws);
-	ns->sgs = le16_to_cpu(s.sgs);
-
-	if (ns->sws) {
-		unsigned int bs = 1 << ns->lba_shift;
-
-		blk_queue_io_min(ns->queue, bs * ns->sws);
-		if (ns->sgs)
-			blk_queue_io_opt(ns->queue, bs * ns->sws * ns->sgs);
-	}
-
-	return 0;
-}
-
 static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 {
 	struct nvme_ns *ns;
@@ -3615,7 +3616,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	ret = nvme_init_ns_head(ns, nsid, id);
 	if (ret)
 		goto out_free_id;
-	nvme_setup_streams_ns(ctrl, ns);
 	nvme_set_disk_name(disk_name, ns, ctrl, &flags);
 
 	disk = alloc_disk_node(0, node);
-- 
2.16.4