From: Valentine Fatiev <valentinef@nvidia.com>
Subject: [PATCH] BACKPORT: drivers/nvme/target/admin-cmd.c

Change-Id: If3663c22fd999b8fec92007bc092ac2662073d66
---
 drivers/nvme/target/admin-cmd.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -9,7 +9,9 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/module.h>
 #include <linux/rculist.h>
+#ifdef HAVE_PART_STAT_H
 #include <linux/part_stat.h>
+#endif
 
 #include <generated/utsrelease.h>
 #include <linux/unaligned.h>
@@ -88,12 +90,21 @@ static u16 nvmet_get_smart_log_nsid(stru
 	if (!req->ns->bdev)
 		return NVME_SC_SUCCESS;
 
+#ifdef HAVE_REQUEST_BDEV
 	host_reads = part_stat_read(req->ns->bdev, ios[READ]);
 	data_units_read =
 		DIV_ROUND_UP(part_stat_read(req->ns->bdev, sectors[READ]), 1000);
 	host_writes = part_stat_read(req->ns->bdev, ios[WRITE]);
 	data_units_written =
 		DIV_ROUND_UP(part_stat_read(req->ns->bdev, sectors[WRITE]), 1000);
+#else
+	host_reads = part_stat_read(req->ns->bdev->bd_part, ios[READ]);
+	data_units_read = DIV_ROUND_UP(part_stat_read(req->ns->bdev->bd_part,
+		sectors[READ]), 1000);
+	host_writes = part_stat_read(req->ns->bdev->bd_part, ios[WRITE]);
+	data_units_written = DIV_ROUND_UP(part_stat_read(req->ns->bdev->bd_part,
+		sectors[WRITE]), 1000);
+#endif
 
 	put_unaligned_le64(host_reads, &slog->host_reads[0]);
 	put_unaligned_le64(data_units_read, &slog->data_units_read[0]);
@@ -117,12 +128,21 @@ static u16 nvmet_get_smart_log_all(struc
 		/* we don't have the right data for file backed ns */
 		if (!ns->bdev)
 			continue;
+#ifdef HAVE_REQUEST_BDEV
 		host_reads += part_stat_read(ns->bdev, ios[READ]);
 		data_units_read += DIV_ROUND_UP(
 			part_stat_read(ns->bdev, sectors[READ]), 1000);
 		host_writes += part_stat_read(ns->bdev, ios[WRITE]);
 		data_units_written += DIV_ROUND_UP(
 			part_stat_read(ns->bdev, sectors[WRITE]), 1000);
+#else
+		host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]);
+		data_units_read += DIV_ROUND_UP(
+			part_stat_read(ns->bdev->bd_part, sectors[READ]), 1000);
+		host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]);
+		data_units_written += DIV_ROUND_UP(
+			part_stat_read(ns->bdev->bd_part, sectors[WRITE]), 1000);
+#endif
 	}
 
 	put_unaligned_le64(host_reads, &slog->host_reads[0]);
@@ -272,7 +292,11 @@ static u32 nvmet_format_ana_group(struct
 	desc->chgcnt = cpu_to_le64(nvmet_ana_chgcnt);
 	desc->state = req->port->ana_state[grpid];
 	memset(desc->rsvd17, 0, sizeof(desc->rsvd17));
+#ifdef struct_size
 	return struct_size(desc, nsids, count);
+#else
+	return sizeof(struct nvme_ana_group_desc) + count * sizeof(__le32);
+#endif
 }
 
 static void nvmet_execute_get_log_page_ana(struct nvmet_req *req)
@@ -391,7 +415,9 @@ static void nvmet_execute_identify_ctrl(
 	memcpy_and_pad(id->fr, sizeof(id->fr),
 		       subsys->firmware_rev, strlen(subsys->firmware_rev), ' ');
 
+#ifdef HAVE_PUT_UNALIGNED_LE24
 	put_unaligned_le24(subsys->ieee_oui, id->ieee);
+#endif
 
 	id->rab = 6;
 
@@ -723,6 +749,7 @@ static void nvmet_execute_identify(struc
 		nvmet_execute_identify_desclist(req);
 		return;
 	case NVME_ID_CNS_CS_NS:
+#ifdef HAVE_BIO_ADD_ZONE_APPEND_PAGE
 		switch (req->cmd->identify.csi) {
 		case NVME_CSI_NVM:
 			/* Not supported */
@@ -734,18 +761,21 @@ static void nvmet_execute_identify(struc
 			}
 			break;
 		}
+#endif
 		break;
 	case NVME_ID_CNS_CS_CTRL:
 		switch (req->cmd->identify.csi) {
 		case NVME_CSI_NVM:
 			nvmet_execute_identify_ctrl_nvm(req);
 			return;
+#ifdef HAVE_BIO_ADD_ZONE_APPEND_PAGE
 		case NVME_CSI_ZNS:
 			if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
 				nvmet_execute_identify_ctrl_zns(req);
 				return;
 			}
 			break;
+#endif
 		}
 		break;
 	}
