18 files changed, 84 insertions, 44 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 10455b2bbbb4..f629d40c645c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1494,7 +1494,6 @@ static inline void put_dev_sector(Sector p)
 }
 
 int kblockd_schedule_work(struct work_struct *work);
-int kblockd_schedule_work_on(int cpu, struct work_struct *work);
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);
 
 #define MODULE_ALIAS_BLOCKDEV(major,minor) \
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index d7ddebd0cdec..e75d2191226b 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -62,6 +62,7 @@ struct css_task_iter {
 	struct list_head		*mg_tasks_head;
 	struct list_head		*dying_tasks_head;
 
+	struct list_head		*cur_tasks_head;
 	struct css_set			*cur_cset;
 	struct css_set			*cur_dcset;
 	struct task_struct		*cur_task;
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 3d013de64f70..43efcc49f061 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -127,9 +127,9 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode,
 				  struct dentry *parent,
 				  struct debugfs_blob_wrapper *blob);
 
-struct dentry *debugfs_create_regset32(const char *name, umode_t mode,
-				     struct dentry *parent,
-				     struct debugfs_regset32 *regset);
+void debugfs_create_regset32(const char *name, umode_t mode,
+			     struct dentry *parent,
+			     struct debugfs_regset32 *regset);
 
 void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
 			  int nregs, void __iomem *base, char *prefix);
@@ -304,11 +304,10 @@ static inline struct dentry *debugfs_create_blob(const char *name, umode_t mode,
 	return ERR_PTR(-ENODEV);
 }
 
-static inline struct dentry *debugfs_create_regset32(const char *name,
-				   umode_t mode, struct dentry *parent,
-				   struct debugfs_regset32 *regset)
+static inline void debugfs_create_regset32(const char *name, umode_t mode,
+					   struct dentry *parent,
+					   struct debugfs_regset32 *regset)
 {
-	return ERR_PTR(-ENODEV);
 }
 
 static inline void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
diff --git a/include/linux/device.h b/include/linux/device.h
index 0cd7c647c16c..fa04dfd22bbc 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -798,6 +798,17 @@ static inline struct device_node *dev_of_node(struct device *dev)
 	return dev->of_node;
 }
 
+static inline bool dev_has_sync_state(struct device *dev)
+{
+	if (!dev)
+		return false;
+	if (dev->driver && dev->driver->sync_state)
+		return true;
+	if (dev->bus && dev->bus->sync_state)
+		return true;
+	return false;
+}
+
 /*
  * High level routines for use by the bus drivers
  */
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index f64ca27dc210..d7bf029df737 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -69,19 +69,23 @@ struct dmar_pci_notify_info {
 extern struct rw_semaphore dmar_global_lock;
 extern struct list_head dmar_drhd_units;
 
-#define for_each_drhd_unit(drhd) \
-	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list)
+#define for_each_drhd_unit(drhd)					\
+	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list,		\
+				dmar_rcu_check())
 
 #define for_each_active_drhd_unit(drhd)					\
-	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list)		\
+	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list,		\
+				dmar_rcu_check())			\
 		if (drhd->ignored) {} else
 
 #define for_each_active_iommu(i, drhd)					\
-	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list)		\
+	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list,		\
+				dmar_rcu_check())			\
 		if (i=drhd->iommu, drhd->ignored) {} else
 
 #define for_each_iommu(i, drhd)						\
-	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list)		\
+	list_for_each_entry_rcu(drhd, &dmar_drhd_units, list,		\
+				dmar_rcu_check())			\
 		if (i=drhd->iommu, 0) {} else 
 
 static inline bool dmar_rcu_check(void)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3cd4fe6b845e..abedbffe2c9e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -698,6 +698,7 @@ struct inode {
 		struct rcu_head		i_rcu;
 	};
 	atomic64_t		i_version;
+	atomic64_t		i_sequence; /* see futex */
 	atomic_t		i_count;
 	atomic_t		i_dio_count;
 	atomic_t		i_writecount;
diff --git a/include/linux/futex.h b/include/linux/futex.h
index 5cc3fed27d4c..b70df27d7e85 100644
--- a/include/linux/futex.h
+++ b/include/linux/futex.h
@@ -31,23 +31,26 @@ struct task_struct;
 
 union futex_key {
 	struct {
+		u64 i_seq;
 		unsigned long pgoff;
-		struct inode *inode;
-		int offset;
+		unsigned int offset;
 	} shared;
 	struct {
+		union {
+			struct mm_struct *mm;
+			u64 __tmp;
+		};
 		unsigned long address;
-		struct mm_struct *mm;
-		int offset;
+		unsigned int offset;
 	} private;
 	struct {
+		u64 ptr;
 		unsigned long word;
-		void *ptr;
-		int offset;
+		unsigned int offset;
 	} both;
 };
 
-#define FUTEX_KEY_INIT (union futex_key) { .both = { .ptr = NULL } }
+#define FUTEX_KEY_INIT (union futex_key) { .both = { .ptr = 0ULL } }
 
 #ifdef CONFIG_FUTEX
 enum {
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 6fbe58538ad6..07dc91835b98 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -245,18 +245,6 @@ static inline bool disk_part_scan_enabled(struct gendisk *disk)
 		!(disk->flags & GENHD_FL_NO_PART_SCAN);
 }
 
-static inline bool disk_has_partitions(struct gendisk *disk)
-{
-	bool ret = false;
-
-	rcu_read_lock();
-	if (rcu_dereference(disk->part_tbl)->len > 1)
-		ret = true;
-	rcu_read_unlock();
-
-	return ret;
-}
-
 static inline dev_t disk_devt(struct gendisk *disk)
 {
 	return MKDEV(disk->major, disk->first_minor);
@@ -298,6 +286,7 @@ extern void disk_part_iter_exit(struct disk_part_iter *piter);
 
 extern struct hd_struct *disk_map_sector_rcu(struct gendisk *disk,
 					     sector_t sector);
+bool disk_has_partitions(struct gendisk *disk);
 
 /*
  * Macros to operate on percpu disk statistics:
diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 39faaaf843e1..c91cf2dee12a 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h
@@ -2,15 +2,10 @@
 #ifndef _INET_DIAG_H_
 #define _INET_DIAG_H_ 1
 
+#include <net/netlink.h>
 #include <uapi/linux/inet_diag.h>
 
-struct net;
-struct sock;
 struct inet_hashinfo;
-struct nlattr;
-struct nlmsghdr;
-struct sk_buff;
-struct netlink_callback;
 
 struct inet_diag_handler {
 	void		(*dump)(struct sk_buff *skb,
@@ -62,6 +57,17 @@ int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
 
 void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk);
 
+static inline size_t inet_diag_msg_attrs_size(void)
+{
+	return	  nla_total_size(1)  /* INET_DIAG_SHUTDOWN */
+		+ nla_total_size(1)  /* INET_DIAG_TOS */
+#if IS_ENABLED(CONFIG_IPV6)
+		+ nla_total_size(1)  /* INET_DIAG_TCLASS */
+		+ nla_total_size(1)  /* INET_DIAG_SKV6ONLY */
+#endif
+		+ nla_total_size(4)  /* INET_DIAG_MARK */
+		+ nla_total_size(4); /* INET_DIAG_CLASS_ID */
+}
 int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
 			     struct inet_diag_msg *r, int ext,
 			     struct user_namespace *user_ns, bool net_admin);
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 4a16b39ae353..980234ae0312 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -123,6 +123,8 @@
 
 #define dmar_readq(a) readq(a)
 #define dmar_writeq(a,v) writeq(v,a)
+#define dmar_readl(a) readl(a)
+#define dmar_writel(a, v) writel(v, a)
 
 #define DMAR_VER_MAJOR(v)		(((v) & 0xf0) >> 4)
 #define DMAR_VER_MINOR(v)		((v) & 0x0f)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 52269e56c514..c54fb96cb1e6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2715,6 +2715,10 @@ static inline bool debug_pagealloc_enabled_static(void)
 #if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_ARCH_HAS_SET_DIRECT_MAP)
 extern void __kernel_map_pages(struct page *page, int numpages, int enable);
 
+/*
+ * When called in DEBUG_PAGEALLOC context, the call should most likely be
+ * guarded by debug_pagealloc_enabled() or debug_pagealloc_enabled_static()
+ */
 static inline void
 kernel_map_pages(struct page *page, int numpages, int enable)
 {
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index ba703384bea0..4c5eb3aa8e72 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -333,6 +333,7 @@ struct mmc_host {
 				 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \
 				 MMC_CAP_UHS_DDR50)
 #define MMC_CAP_SYNC_RUNTIME_PM	(1 << 21)	/* Synced runtime PM suspends. */
+#define MMC_CAP_NEED_RSP_BUSY	(1 << 22)	/* Commands with R1B can't use R1. */
 #define MMC_CAP_DRIVER_TYPE_A	(1 << 23)	/* Host supports Driver Type A */
 #define MMC_CAP_DRIVER_TYPE_C	(1 << 24)	/* Host supports Driver Type C */
 #define MMC_CAP_DRIVER_TYPE_D	(1 << 25)	/* Host supports Driver Type D */
diff --git a/include/linux/of_clk.h b/include/linux/of_clk.h
index c86fcad23fc2..31b73a0da9db 100644
--- a/include/linux/of_clk.h
+++ b/include/linux/of_clk.h
@@ -11,17 +11,17 @@ struct of_device_id;
 
 #if defined(CONFIG_COMMON_CLK) && defined(CONFIG_OF)
 
-unsigned int of_clk_get_parent_count(struct device_node *np);
-const char *of_clk_get_parent_name(struct device_node *np, int index);
+unsigned int of_clk_get_parent_count(const struct device_node *np);
+const char *of_clk_get_parent_name(const struct device_node *np, int index);
 void of_clk_init(const struct of_device_id *matches);
 
 #else /* !CONFIG_COMMON_CLK || !CONFIG_OF */
 
-static inline unsigned int of_clk_get_parent_count(struct device_node *np)
+static inline unsigned int of_clk_get_parent_count(const struct device_node *np)
 {
 	return 0;
 }
-static inline const char *of_clk_get_parent_name(struct device_node *np,
+static inline const char *of_clk_get_parent_name(const struct device_node *np,
 						 int index)
 {
 	return NULL;
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c570e162e05e..452e8ba8665f 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -357,6 +357,7 @@ struct macsec_ops;
  * is_gigabit_capable: Set to true if PHY supports 1000Mbps
  * has_fixups: Set to true if this phy has fixups/quirks.
  * suspended: Set to true if this phy has been suspended successfully.
+ * suspended_by_mdio_bus: Set to true if this phy was suspended by MDIO bus.
  * sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
  * loopback_enabled: Set true if this phy has been loopbacked successfully.
  * state: state of the PHY for management purposes
@@ -396,6 +397,7 @@ struct phy_device {
 	unsigned is_gigabit_capable:1;
 	unsigned has_fixups:1;
 	unsigned suspended:1;
+	unsigned suspended_by_mdio_bus:1;
 	unsigned sysfs_links:1;
 	unsigned loopback_enabled:1;
 
@@ -557,6 +559,7 @@ struct phy_driver {
 	/*
 	 * Checks if the PHY generated an interrupt.
 	 * For multi-PHY devices with shared PHY interrupt pin
+	 * Set interrupt bits have to be cleared.
 	 */
 	int (*did_interrupt)(struct phy_device *phydev);
 
diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h
index 0bf9fddb8306..3b400b1919a9 100644
--- a/include/linux/platform_data/spi-omap2-mcspi.h
+++ b/include/linux/platform_data/spi-omap2-mcspi.h
@@ -11,6 +11,7 @@ struct omap2_mcspi_platform_config {
 	unsigned short	num_cs;
 	unsigned int regs_offset;
 	unsigned int pin_dir:1;
+	size_t max_xfer_len;
 };
 
 struct omap2_mcspi_device_config {
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 276a03c24691..041bfa412aa0 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,7 +24,7 @@ struct platform_device {
 	int		id;
 	bool		id_auto;
 	struct device	dev;
-	u64		dma_mask;
+	u64		platform_dma_mask;
 	u32		num_resources;
 	struct resource	*resource;
 
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index beb9a9da1699..70ebef866cc8 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -972,9 +972,9 @@ static inline int rhashtable_lookup_insert_key(
 /**
  * rhashtable_lookup_get_insert_key - lookup and insert object into hash table
  * @ht:		hash table
+ * @key:	key
  * @obj:	pointer to hash head inside object
  * @params:	hash table parameters
- * @data:	pointer to element data already in hashes
  *
  * Just like rhashtable_lookup_insert_key(), but this function returns the
  * object if it exists, NULL if it does not and the insertion was successful,
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 4261d1c6e87b..e48554e6526c 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -487,6 +487,19 @@ extern void wq_worker_comm(char *buf, size_t size, struct task_struct *task);
  *
  * We queue the work to the CPU on which it was submitted, but if the CPU dies
  * it can be processed by another CPU.
+ *
+ * Memory-ordering properties:  If it returns %true, guarantees that all stores
+ * preceding the call to queue_work() in the program order will be visible from
+ * the CPU which will execute @work by the time such work executes, e.g.,
+ *
+ * { x is initially 0 }
+ *
+ *   CPU0				CPU1
+ *
+ *   WRITE_ONCE(x, 1);			[ @work is being executed ]
+ *   r0 = queue_work(wq, work);		  r1 = READ_ONCE(x);
+ *
+ * Forbids: r0 == true && r1 == 0
  */
 static inline bool queue_work(struct workqueue_struct *wq,
 			      struct work_struct *work)
@@ -546,6 +559,9 @@ static inline bool schedule_work_on(int cpu, struct work_struct *work)
  * This puts a job in the kernel-global workqueue if it was not already
  * queued and leaves it in the same position on the kernel-global
  * workqueue otherwise.
+ *
+ * Shares the same memory-ordering properties of queue_work(), cf. the
+ * DocBook header of queue_work().
  */
 static inline bool schedule_work(struct work_struct *work)
 {