Merge tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:

 - NVMe:
      - ZNS support (Aravind, Keith, Matias, Niklas)
      - Misc cleanups, optimizations, fixes (Baolin, Chaitanya, David,
        Dongli, Max, Sagi)

 - null_blk zone capacity support (Aravind)

 - MD:
      - raid5/6 fixes (ChangSyun)
      - Warning fixes (Damien)
      - raid5 stripe fixes (Guoqing, Song, Yufen)
      - sysfs deadlock fix (Junxiao)
      - raid10 deadlock fix (Vitaly)

 - struct_size conversions (Gustavo)

 - Set of bcache updates/fixes (Coly)

* tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block: (117 commits)
  md/raid5: Allow degraded raid6 to do rmw
  md/raid5: Fix Force reconstruct-write io stuck in degraded raid5
  raid5: don't duplicate code for different paths in handle_stripe
  raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show
  md: print errno in super_written
  md/raid5: remove the redundant setting of STRIPE_HANDLE
  md: register new md sysfs file 'uuid' read-only
  md: fix max sectors calculation for super 1.0
  nvme-loop: remove extra variable in create ctrl
  nvme-loop: set ctrl state connecting after init
  nvme-multipath: do not fall back to __nvme_find_path() for non-optimized paths
  nvme-multipath: fix logic for non-optimized paths
  nvme-rdma: fix controller reset hang during traffic
  nvme-tcp: fix controller reset hang during traffic
  nvmet: introduce the passthru Kconfig option
  nvmet: introduce the passthru configfs interface
  nvmet: Add passthru enable/disable helpers
  nvmet: add passthru code to process commands
  nvme: export nvme_find_get_ns() and nvme_put_ns()
  nvme: introduce nvme_ctrl_get_by_path()
  ...

1 files changed, 84 insertions, 2 deletions

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 9c5b82af7978..ebb8c3ed3885 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -37,6 +37,14 @@ extern unsigned int admin_timeout;
 #define  NVME_INLINE_METADATA_SG_CNT  1
 #endif
 
+/*
+ * Default to a 4K page size, with the intention to update this
+ * path in the future to accommodate architectures with differing
+ * kernel and IO page sizes.
+ */
+#define NVME_CTRL_PAGE_SHIFT	12
+#define NVME_CTRL_PAGE_SIZE	(1 << NVME_CTRL_PAGE_SHIFT)
+
 extern struct workqueue_struct *nvme_wq;
 extern struct workqueue_struct *nvme_reset_wq;
 extern struct workqueue_struct *nvme_delete_wq;
@@ -180,12 +188,32 @@ static inline u16 nvme_req_qid(struct request *req)
  */
 #define NVME_QUIRK_DELAY_AMOUNT		2300
 
+/*
+ * enum nvme_ctrl_state: Controller state
+ *
+ * @NVME_CTRL_NEW:		New controller just allocated, initial state
+ * @NVME_CTRL_LIVE:		Controller is connected and I/O capable
+ * @NVME_CTRL_RESETTING:	Controller is resetting (or scheduled reset)
+ * @NVME_CTRL_CONNECTING:	Controller is disconnected, now connecting the
+ *				transport
+ * @NVME_CTRL_DELETING:		Controller is deleting (or scheduled deletion)
+ * @NVME_CTRL_DELETING_NOIO:	Controller is deleting and I/O is not
+ *				disabled/failed immediately. This state comes
+ * 				after all async event processing took place and
+ * 				before ns removal and the controller deletion
+ * 				progress
+ * @NVME_CTRL_DEAD:		Controller is non-present/unresponsive during
+ *				shutdown or removal. In this case we forcibly
+ *				kill all inflight I/O as they have no chance to
+ *				complete
+ */
 enum nvme_ctrl_state {
 	NVME_CTRL_NEW,
 	NVME_CTRL_LIVE,
 	NVME_CTRL_RESETTING,
 	NVME_CTRL_CONNECTING,
 	NVME_CTRL_DELETING,
+	NVME_CTRL_DELETING_NOIO,
 	NVME_CTRL_DEAD,
 };
 
@@ -198,6 +226,12 @@ struct nvme_fault_inject {
 #endif
 };
 
+struct nvme_cel {
+	struct list_head	entry;
+	struct nvme_effects_log	log;
+	u8			csi;
+};
+
 struct nvme_ctrl {
 	bool comp_seen;
 	enum nvme_ctrl_state state;
@@ -235,10 +269,12 @@ struct nvme_ctrl {
 	u32 queue_count;
 
 	u64 cap;
-	u32 page_size;
 	u32 max_hw_sectors;
 	u32 max_segments;
 	u32 max_integrity_segments;
+#ifdef CONFIG_BLK_DEV_ZONED
+	u32 max_zone_append;
+#endif
 	u16 crdt[3];
 	u16 oncs;
 	u16 oacs;
@@ -264,6 +300,7 @@ struct nvme_ctrl {
 	unsigned long quirks;
 	struct nvme_id_power_state psd[32];
 	struct nvme_effects_log *effects;
+	struct list_head cels;
 	struct work_struct scan_work;
 	struct work_struct async_event_work;
 	struct delayed_work ka_work;
@@ -346,6 +383,7 @@ struct nvme_ns_ids {
 	u8	eui64[8];
 	u8	nguid[16];
 	uuid_t	uuid;
+	u8	csi;
 };
 
 /*
@@ -365,6 +403,7 @@ struct nvme_ns_head {
 	struct kref		ref;
 	bool			shared;
 	int			instance;
+	struct nvme_effects_log *effects;
 #ifdef CONFIG_NVME_MULTIPATH
 	struct gendisk		*disk;
 	struct bio_list		requeue_list;
@@ -402,6 +441,9 @@ struct nvme_ns {
 	u16 sgs;
 	u32 sws;
 	u8 pi_type;
+#ifdef CONFIG_BLK_DEV_ZONED
+	u64 zsze;
+#endif
 	unsigned long features;
 	unsigned long flags;
 #define NVME_NS_REMOVING	0
@@ -567,8 +609,11 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
 int nvme_try_sched_reset(struct nvme_ctrl *ctrl);
 int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
 
-int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp,
+int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi,
 		void *log, size_t size, u64 offset);
+struct nvme_ns *nvme_get_ns_from_disk(struct gendisk *disk,
+		struct nvme_ns_head **head, int *srcu_idx);
+void nvme_put_ns_from_disk(struct nvme_ns_head *head, int idx);
 
 extern const struct attribute_group *nvme_ns_id_attr_groups[];
 extern const struct block_device_operations nvme_ns_head_ops;
@@ -704,6 +749,36 @@ static inline void nvme_mpath_update_disk_size(struct gendisk *disk)
 }
 #endif /* CONFIG_NVME_MULTIPATH */
 
+#ifdef CONFIG_BLK_DEV_ZONED
+int nvme_update_zone_info(struct gendisk *disk, struct nvme_ns *ns,
+			  unsigned lbaf);
+
+int nvme_report_zones(struct gendisk *disk, sector_t sector,
+		      unsigned int nr_zones, report_zones_cb cb, void *data);
+
+blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns, struct request *req,
+				       struct nvme_command *cmnd,
+				       enum nvme_zone_mgmt_action action);
+#else
+#define nvme_report_zones NULL
+
+static inline blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns,
+		struct request *req, struct nvme_command *cmnd,
+		enum nvme_zone_mgmt_action action)
+{
+	return BLK_STS_NOTSUPP;
+}
+
+static inline int nvme_update_zone_info(struct gendisk *disk,
+					struct nvme_ns *ns,
+					unsigned lbaf)
+{
+	dev_warn(ns->ctrl->device,
+		 "Please enable CONFIG_BLK_DEV_ZONED to support ZNS devices\n");
+	return -EPROTONOSUPPORT;
+}
+#endif
+
 #ifdef CONFIG_NVM
 int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
 void nvme_nvm_unregister(struct nvme_ns *ns);
@@ -735,4 +810,11 @@ void nvme_hwmon_init(struct nvme_ctrl *ctrl);
 static inline void nvme_hwmon_init(struct nvme_ctrl *ctrl) { }
 #endif
 
+u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
+			 u8 opcode);
+void nvme_execute_passthru_rq(struct request *rq);
+struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path);
+struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid);
+void nvme_put_ns(struct nvme_ns *ns);
+
 #endif /* _NVME_H */