[PATCH 3/3] [backport] nvme: consolidate chunk_sectors settings

[Revanth Rajashekar]

From: Keith Busch <kbusch at kernel.org>

commit 38adf94e166e3cb4eb89683458ca578051e8218d

Move the quirked chunk_sectors setting to the same location as noiob so
one place registers this setting. And since the noiob value is only used
locally, remove the member from struct nvme_ns.

Signed-off-by: Keith Busch <kbusch at kernel.org>
Signed-off-by: Revanth Rajashekar <revanth.rajashekar at intel.com>
---
 drivers/nvme/host/core.c | 22 ++++++++++------------
 drivers/nvme/host/nvme.h |  1 -
 2 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 9ac27c9a1..f8068d150 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1692,12 +1692,6 @@ static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type)
 }
 #endif /* CONFIG_BLK_DEV_INTEGRITY */

-static void nvme_set_chunk_size(struct nvme_ns *ns)
-{
-	u32 chunk_size = nvme_lba_to_sect(ns, ns->noiob);
-	blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(chunk_size));
-}
-
 static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
 {
 	struct nvme_ctrl *ctrl = ns->ctrl;
@@ -1852,6 +1846,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
 static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 {
 	struct nvme_ns *ns = disk->private_data;
+	u32 iob;

 	/*
 	 * If identify namespace failed, use default 512 byte block size so
@@ -1860,7 +1855,13 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 	ns->lba_shift = id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ds;
 	if (ns->lba_shift == 0)
 		ns->lba_shift = 9;
-	ns->noiob = le16_to_cpu(id->noiob);
+
+	if ((ns->ctrl->quirks & NVME_QUIRK_STRIPE_SIZE) &&
+	    is_power_of_2(ns->ctrl->max_hw_sectors))
+		iob = ns->ctrl->max_hw_sectors;
+	else
+		iob = nvme_lba_to_sect(ns, le16_to_cpu(id->noiob));
+
 	ns->ms = le16_to_cpu(id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ms);
 	ns->ext = ns->ms && (id->flbas & NVME_NS_FLBAS_META_EXT);
 	/* the PI implementation requires metadata equal t10 pi tuple size */
@@ -1869,8 +1870,8 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 	else
 		ns->pi_type = 0;

-	if (ns->noiob)
-		nvme_set_chunk_size(ns);
+	if (iob)
+		blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(iob));
 	nvme_update_disk_info(disk, ns, id);
 #ifdef CONFIG_NVME_MULTIPATH
 	if (ns->head->disk) {
@@ -2221,9 +2222,6 @@ static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
 		blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);
 		blk_queue_max_segments(q, min_t(u32, max_segments, USHRT_MAX));
 	}
-	if ((ctrl->quirks & NVME_QUIRK_STRIPE_SIZE) &&
-	    is_power_of_2(ctrl->max_hw_sectors))
-		blk_queue_chunk_sectors(q, ctrl->max_hw_sectors);
 	blk_queue_virt_boundary(q, ctrl->page_size - 1);
 	if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
 		vwc = true;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 73065952f..a177b918f 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -376,7 +376,6 @@ struct nvme_ns {
 #define NVME_NS_REMOVING	0
 #define NVME_NS_DEAD     	1
 #define NVME_NS_ANA_PENDING	2
-	u16 noiob;

 	struct nvme_fault_inject fault_inject;

--
2.17.1