Merge tag 'v5.0-rc6' into devel

Linux 5.0-rc6

include/linux/backing-dev-defs.h

@@ -190,6 +190,7 @@ struct backing_dev_info {
 	struct radix_tree_root cgwb_tree; /* radix tree of active cgroup wbs */
 	struct rb_root cgwb_congested_tree; /* their congested states */
 	struct mutex cgwb_release_mutex;  /* protect shutdown of wb structs */
+	struct rw_semaphore wb_switch_rwsem; /* no cgwb switch while syncing */
 #else
 	struct bdi_writeback_congested *wb_congested;
 #endif

include/linux/bcma/bcma_soc.h

@@ -6,6 +6,7 @@
 
 struct bcma_soc {
 	struct bcma_bus bus;
+	struct device *dev;
 };
 
 int __init bcma_host_soc_register(struct bcma_soc *soc);

include/linux/blk_types.h

@@ -287,7 +287,7 @@ enum req_opf {
 	REQ_OP_DISCARD		= 3,
 	/* securely erase sectors */
 	REQ_OP_SECURE_ERASE	= 5,
-	/* seset a zone write pointer */
+	/* reset a zone write pointer */
 	REQ_OP_ZONE_RESET	= 6,
 	/* write the same sector many times */
 	REQ_OP_WRITE_SAME	= 7,

include/linux/blktrace_api.h

@@ -116,7 +116,13 @@ extern void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes);
 
 static inline sector_t blk_rq_trace_sector(struct request *rq)
 {
-	return blk_rq_is_passthrough(rq) ? 0 : blk_rq_pos(rq);
+	/*
+	 * Tracing should ignore starting sector for passthrough requests and
+	 * requests where starting sector didn't get set.
+	 */
+	if (blk_rq_is_passthrough(rq) || blk_rq_pos(rq) == (sector_t)-1)
+		return 0;
+	return blk_rq_pos(rq);
 }
 
 static inline unsigned int blk_rq_trace_nr_sectors(struct request *rq)

include/linux/bpf_verifier.h

@@ -172,6 +172,7 @@ struct bpf_verifier_state_list {
 #define BPF_ALU_SANITIZE_SRC		1U
 #define BPF_ALU_SANITIZE_DST		2U
 #define BPF_ALU_NEG_VALUE		(1U << 2)
+#define BPF_ALU_NON_POINTER		(1U << 3)
 #define BPF_ALU_SANITIZE		(BPF_ALU_SANITIZE_SRC | \
 					 BPF_ALU_SANITIZE_DST)
 

include/linux/bpfilter.h

@@ -3,13 +3,22 @@
 #define _LINUX_BPFILTER_H
 
 #include <uapi/linux/bpfilter.h>
+#include <linux/umh.h>
 
 struct sock;
 int bpfilter_ip_set_sockopt(struct sock *sk, int optname, char __user *optval,
 			    unsigned int optlen);
 int bpfilter_ip_get_sockopt(struct sock *sk, int optname, char __user *optval,
 			    int __user *optlen);
-extern int (*bpfilter_process_sockopt)(struct sock *sk, int optname,
-				       char __user *optval,
-				       unsigned int optlen, bool is_set);
+struct bpfilter_umh_ops {
+	struct umh_info info;
+	/* since ip_getsockopt() can run in parallel, serialize access to umh */
+	struct mutex lock;
+	int (*sockopt)(struct sock *sk, int optname,
+		       char __user *optval,
+		       unsigned int optlen, bool is_set);
+	int (*start)(void);
+	bool stop;
+};
+extern struct bpfilter_umh_ops bpfilter_ops;
 #endif

include/linux/ceph/libceph.h

@@ -35,6 +35,7 @@
 #define CEPH_OPT_NOMSGAUTH	  (1<<4) /* don't require msg signing feat */
 #define CEPH_OPT_TCP_NODELAY	  (1<<5) /* TCP_NODELAY on TCP sockets */
 #define CEPH_OPT_NOMSGSIGN	  (1<<6) /* don't sign msgs */
+#define CEPH_OPT_ABORT_ON_FULL	  (1<<7) /* abort w/ ENOSPC when full */
 
 #define CEPH_OPT_DEFAULT   (CEPH_OPT_TCP_NODELAY)
 
@@ -53,7 +54,7 @@ struct ceph_options {
 	unsigned long osd_request_timeout;	/* jiffies */
 
 	/*
-	 * any type that can't be simply compared or doesn't need need
+	 * any type that can't be simply compared or doesn't need
 	 * to be compared should go beyond this point,
 	 * ceph_compare_options() should be updated accordingly
 	 */
@@ -281,7 +282,8 @@ extern struct ceph_options *ceph_parse_options(char *options,
 			      const char *dev_name, const char *dev_name_end,
 			      int (*parse_extra_token)(char *c, void *private),
 			      void *private);
-int ceph_print_client_options(struct seq_file *m, struct ceph_client *client);
+int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
+			      bool show_all);
 extern void ceph_destroy_options(struct ceph_options *opt);
 extern int ceph_compare_options(struct ceph_options *new_opt,
 				struct ceph_client *client);

include/linux/ceph/osd_client.h

@@ -354,7 +354,6 @@ struct ceph_osd_client {
 	struct rb_root         linger_map_checks;
 	atomic_t               num_requests;
 	atomic_t               num_homeless;
-	bool                   abort_on_full; /* abort w/ ENOSPC when full */
 	int                    abort_err;
 	struct delayed_work    timeout_work;
 	struct delayed_work    osds_timeout_work;

include/linux/compiler-clang.h

@@ -3,9 +3,8 @@
 #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead."
 #endif
 
-/* Some compiler specific definitions are overwritten here
- * for Clang compiler
- */
+/* Compiler specific definitions for Clang compiler */
+
 #define uninitialized_var(x) x = *(&(x))
 
 /* same as gcc, this was present in clang-2.6 so we can assume it works

include/linux/compiler-gcc.h

@@ -58,17 +58,13 @@
 	(typeof(ptr)) (__ptr + (off));					\
 })
 
-/* Make the optimizer believe the variable can be manipulated arbitrarily. */
-#define OPTIMIZER_HIDE_VAR(var)						\
-	__asm__ ("" : "=r" (var) : "0" (var))
-
 /*
  * A trick to suppress uninitialized variable warning without generating any
  * code
  */
 #define uninitialized_var(x) x = x
 
-#ifdef RETPOLINE
+#ifdef CONFIG_RETPOLINE
 #define __noretpoline __attribute__((__indirect_branch__("keep")))
 #endif
 

include/linux/compiler-intel.h

@@ -5,9 +5,7 @@
 
 #ifdef __ECC
 
-/* Some compiler specific definitions are overwritten here
- * for Intel ECC compiler
- */
+/* Compiler specific definitions for Intel ECC compiler */
 
 #include <asm/intrinsics.h>
 

include/linux/compiler.h

@@ -161,7 +161,9 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 #endif
 
 #ifndef OPTIMIZER_HIDE_VAR
-#define OPTIMIZER_HIDE_VAR(var) barrier()
+/* Make the optimizer believe the variable can be manipulated arbitrarily. */
+#define OPTIMIZER_HIDE_VAR(var)						\
+	__asm__ ("" : "=r" (var) : "0" (var))
 #endif
 
 /* Not-quite-unique ID. */

include/linux/cpu.h

@@ -180,12 +180,10 @@ enum cpuhp_smt_control {
 #if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT)
 extern enum cpuhp_smt_control cpu_smt_control;
 extern void cpu_smt_disable(bool force);
-extern void cpu_smt_check_topology_early(void);
 extern void cpu_smt_check_topology(void);
 #else
 # define cpu_smt_control		(CPU_SMT_ENABLED)
 static inline void cpu_smt_disable(bool force) { }
-static inline void cpu_smt_check_topology_early(void) { }
 static inline void cpu_smt_check_topology(void) { }
 #endif
 

include/linux/dcache.h

@@ -62,9 +62,10 @@ extern const struct qstr slash_name;
 struct dentry_stat_t {
 	long nr_dentry;
 	long nr_unused;
-	long age_limit;          /* age in seconds */
-	long want_pages;         /* pages requested by system */
-	long dummy[2];
+	long age_limit;		/* age in seconds */
+	long want_pages;	/* pages requested by system */
+	long nr_negative;	/* # of unused negative dentries */
+	long dummy;		/* Reserved for future use */
 };
 extern struct dentry_stat_t dentry_stat;
 

include/linux/dma-mapping.h

@@ -717,15 +717,6 @@ static inline unsigned long dma_max_pfn(struct device *dev)
 }
 #endif
 
-/*
- * Please always use dma_alloc_coherent instead as it already zeroes the memory!
- */
-static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
-					dma_addr_t *dma_handle, gfp_t flag)
-{
-	return dma_alloc_coherent(dev, size, dma_handle, flag);
-}
-
 static inline int dma_get_cache_alignment(void)
 {
 #ifdef ARCH_DMA_MINALIGN

include/linux/fb.h

@@ -653,6 +653,7 @@ extern int fb_new_modelist(struct fb_info *info);
 
 extern struct fb_info *registered_fb[FB_MAX];
 extern int num_registered_fb;
+extern bool fb_center_logo;
 extern struct class *fb_class;
 
 #define for_each_registered_fb(i)		\

include/linux/filter.h

@@ -591,8 +591,8 @@ static inline u8 *bpf_skb_cb(struct sk_buff *skb)
 	return qdisc_skb_cb(skb)->data;
 }
 
-static inline u32 bpf_prog_run_save_cb(const struct bpf_prog *prog,
-				       struct sk_buff *skb)
+static inline u32 __bpf_prog_run_save_cb(const struct bpf_prog *prog,
+					 struct sk_buff *skb)
 {
 	u8 *cb_data = bpf_skb_cb(skb);
 	u8 cb_saved[BPF_SKB_CB_LEN];
@@ -611,15 +611,30 @@ static inline u32 bpf_prog_run_save_cb(const struct bpf_prog *prog,
 	return res;
 }
 
+static inline u32 bpf_prog_run_save_cb(const struct bpf_prog *prog,
+				       struct sk_buff *skb)
+{
+	u32 res;
+
+	preempt_disable();
+	res = __bpf_prog_run_save_cb(prog, skb);
+	preempt_enable();
+	return res;
+}
+
 static inline u32 bpf_prog_run_clear_cb(const struct bpf_prog *prog,
 					struct sk_buff *skb)
 {
 	u8 *cb_data = bpf_skb_cb(skb);
+	u32 res;
 
 	if (unlikely(prog->cb_access))
 		memset(cb_data, 0, BPF_SKB_CB_LEN);
 
-	return BPF_PROG_RUN(prog, skb);
+	preempt_disable();
+	res = BPF_PROG_RUN(prog, skb);
+	preempt_enable();
+	return res;
 }
 
 static __always_inline u32 bpf_prog_run_xdp(const struct bpf_prog *prog,

include/linux/fs.h

@@ -1479,11 +1479,12 @@ struct super_block {
 	struct user_namespace *s_user_ns;
 
 	/*
-	 * Keep the lru lists last in the structure so they always sit on their
-	 * own individual cachelines.
+	 * The list_lru structure is essentially just a pointer to a table
+	 * of per-node lru lists, each of which has its own spinlock.
+	 * There is no need to put them into separate cachelines.
 	 */
-	struct list_lru		s_dentry_lru ____cacheline_aligned_in_smp;
-	struct list_lru		s_inode_lru ____cacheline_aligned_in_smp;
+	struct list_lru		s_dentry_lru;
+	struct list_lru		s_inode_lru;
 	struct rcu_head		rcu;
 	struct work_struct	destroy_work;
 

include/linux/hid-debug.h

@@ -24,7 +24,10 @@
 
 #ifdef CONFIG_DEBUG_FS
 
+#include <linux/kfifo.h>
+
 #define HID_DEBUG_BUFSIZE 512
+#define HID_DEBUG_FIFOSIZE 512
 
 void hid_dump_input(struct hid_device *, struct hid_usage *, __s32);
 void hid_dump_report(struct hid_device *, int , u8 *, int);
@@ -37,11 +40,8 @@ void hid_debug_init(void);
 void hid_debug_exit(void);
 void hid_debug_event(struct hid_device *, char *);
 
-
 struct hid_debug_list {
-	char *hid_debug_buf;
-	int head;
-	int tail;
+	DECLARE_KFIFO_PTR(hid_debug_fifo, char);
 	struct fasync_struct *fasync;
 	struct hid_device *hdev;
 	struct list_head node;
@@ -64,4 +64,3 @@ struct hid_debug_list {
 #endif
 
 #endif
-

include/linux/hid.h

@@ -430,7 +430,7 @@ struct hid_local {
  */
 
 struct hid_collection {
-	struct hid_collection *parent;
+	int parent_idx; /* device->collection */
 	unsigned type;
 	unsigned usage;
 	unsigned level;
@@ -658,7 +658,6 @@ struct hid_parser {
 	unsigned int         *collection_stack;
 	unsigned int          collection_stack_ptr;
 	unsigned int          collection_stack_size;
-	struct hid_collection *active_collection;
 	struct hid_device    *device;
 	unsigned int          scan_flags;
 };

include/linux/hyperv.h

@@ -1159,8 +1159,9 @@ struct hv_ring_buffer_debug_info {
 	u32 bytes_avail_towrite;
 };
 
-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
-			    struct hv_ring_buffer_debug_info *debug_info);
+
+int hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+				struct hv_ring_buffer_debug_info *debug_info);
 
 /* Vmbus interface */
 #define vmbus_driver_register(driver)	\

include/linux/ide.h

@@ -615,6 +615,7 @@ struct ide_drive_s {
 
 	/* current sense rq and buffer */
 	bool sense_rq_armed;
+	bool sense_rq_active;
 	struct request *sense_rq;
 	struct request_sense sense_data;
 
@@ -1219,6 +1220,7 @@ extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
 extern void ide_timer_expiry(struct timer_list *t);
 extern irqreturn_t ide_intr(int irq, void *dev_id);
 extern blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
+extern blk_status_t ide_issue_rq(ide_drive_t *, struct request *, bool);
 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
 
 void ide_init_disk(struct gendisk *, ide_drive_t *);

include/linux/if_arp.h

@@ -54,6 +54,7 @@ static inline bool dev_is_mac_header_xmit(const struct net_device *dev)
 	case ARPHRD_IPGRE:
 	case ARPHRD_VOID:
 	case ARPHRD_NONE:
+	case ARPHRD_RAWIP:
 		return false;
 	default:
 		return true;

include/linux/interrupt.h

@@ -260,6 +260,7 @@ struct irq_affinity {
 /**
  * struct irq_affinity_desc - Interrupt affinity descriptor
  * @mask:	cpumask to hold the affinity assignment
+ * @is_managed: 1 if the interrupt is managed internally
  */
 struct irq_affinity_desc {
 	struct cpumask	mask;

include/linux/irqchip/arm-gic-v3.h

@@ -319,7 +319,7 @@
 #define GITS_TYPER_PLPIS		(1UL << 0)
 #define GITS_TYPER_VLPIS		(1UL << 1)
 #define GITS_TYPER_ITT_ENTRY_SIZE_SHIFT	4
-#define GITS_TYPER_ITT_ENTRY_SIZE(r)	((((r) >> GITS_TYPER_ITT_ENTRY_SIZE_SHIFT) & 0x1f) + 1)
+#define GITS_TYPER_ITT_ENTRY_SIZE(r)	((((r) >> GITS_TYPER_ITT_ENTRY_SIZE_SHIFT) & 0xf) + 1)
 #define GITS_TYPER_IDBITS_SHIFT		8
 #define GITS_TYPER_DEVBITS_SHIFT	13
 #define GITS_TYPER_DEVBITS(r)		((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)

include/linux/libnvdimm.h

@@ -160,6 +160,7 @@ static inline struct nd_blk_region_desc *to_blk_region_desc(
 }
 
 enum nvdimm_security_state {
+	NVDIMM_SECURITY_ERROR = -1,
 	NVDIMM_SECURITY_DISABLED,
 	NVDIMM_SECURITY_UNLOCKED,
 	NVDIMM_SECURITY_LOCKED,
@@ -234,7 +235,6 @@ static inline struct nvdimm *nvdimm_create(struct nvdimm_bus *nvdimm_bus,
 			cmd_mask, num_flush, flush_wpq, NULL, NULL);
 }
 
-int nvdimm_security_setup_events(struct nvdimm *nvdimm);
 const struct nd_cmd_desc *nd_cmd_dimm_desc(int cmd);
 const struct nd_cmd_desc *nd_cmd_bus_desc(int cmd);
 u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd,

include/linux/memory_hotplug.h

@@ -21,14 +21,16 @@ struct vmem_altmap;
  * walkers which rely on the fully initialized page->flags and others
  * should use this rather than pfn_valid && pfn_to_page
  */
-#define pfn_to_online_page(pfn)				\
-({							\
-	struct page *___page = NULL;			\
-	unsigned long ___nr = pfn_to_section_nr(pfn);	\
-							\
-	if (___nr < NR_MEM_SECTIONS && online_section_nr(___nr))\
-		___page = pfn_to_page(pfn);		\
-	___page;					\
+#define pfn_to_online_page(pfn)					   \
+({								   \
+	struct page *___page = NULL;				   \
+	unsigned long ___pfn = pfn;				   \
+	unsigned long ___nr = pfn_to_section_nr(___pfn);	   \
+								   \
+	if (___nr < NR_MEM_SECTIONS && online_section_nr(___nr) && \
+	    pfn_valid_within(___pfn))				   \
+		___page = pfn_to_page(___pfn);			   \
+	___page;						   \
 })
 
 /*

include/linux/mfd/cros_ec_commands.h

@@ -2790,6 +2790,100 @@ struct ec_response_battery_vendor_param {
 	uint32_t value;
 } __packed;
 
+/*****************************************************************************/
+/* Commands for I2S recording on audio codec. */
+
+#define EC_CMD_CODEC_I2S 0x00BC
+
+enum ec_codec_i2s_subcmd {
+	EC_CODEC_SET_SAMPLE_DEPTH = 0x0,
+	EC_CODEC_SET_GAIN = 0x1,
+	EC_CODEC_GET_GAIN = 0x2,
+	EC_CODEC_I2S_ENABLE = 0x3,
+	EC_CODEC_I2S_SET_CONFIG = 0x4,
+	EC_CODEC_I2S_SET_TDM_CONFIG = 0x5,
+	EC_CODEC_I2S_SET_BCLK = 0x6,
+};
+
+enum ec_sample_depth_value {
+	EC_CODEC_SAMPLE_DEPTH_16 = 0,
+	EC_CODEC_SAMPLE_DEPTH_24 = 1,
+};
+
+enum ec_i2s_config {
+	EC_DAI_FMT_I2S = 0,
+	EC_DAI_FMT_RIGHT_J = 1,
+	EC_DAI_FMT_LEFT_J = 2,
+	EC_DAI_FMT_PCM_A = 3,
+	EC_DAI_FMT_PCM_B = 4,
+	EC_DAI_FMT_PCM_TDM = 5,
+};
+
+struct ec_param_codec_i2s {
+	/*
+	 * enum ec_codec_i2s_subcmd
+	 */
+	uint8_t cmd;
+	union {
+		/*
+		 * EC_CODEC_SET_SAMPLE_DEPTH
+		 * Value should be one of ec_sample_depth_value.
+		 */
+		uint8_t depth;
+
+		/*
+		 * EC_CODEC_SET_GAIN
+		 * Value should be 0~43 for both channels.
+		 */
+		struct ec_param_codec_i2s_set_gain {
+			uint8_t left;
+			uint8_t right;
+		} __packed gain;
+
+		/*
+		 * EC_CODEC_I2S_ENABLE
+		 * 1 to enable, 0 to disable.
+		 */
+		uint8_t i2s_enable;
+
+		/*
+		 * EC_CODEC_I2S_SET_COFNIG
+		 * Value should be one of ec_i2s_config.
+		 */
+		uint8_t i2s_config;
+
+		/*
+		 * EC_CODEC_I2S_SET_TDM_CONFIG
+		 * Value should be one of ec_i2s_config.
+		 */
+		struct ec_param_codec_i2s_tdm {
+			/*
+			 * 0 to 496
+			 */
+			int16_t ch0_delay;
+			/*
+			 * -1 to 496
+			 */
+			int16_t ch1_delay;
+			uint8_t adjacent_to_ch0;
+			uint8_t adjacent_to_ch1;
+		} __packed tdm_param;
+
+		/*
+		 * EC_CODEC_I2S_SET_BCLK
+		 */
+		uint32_t bclk;
+	};
+} __packed;
+
+/*
+ * For subcommand EC_CODEC_GET_GAIN.
+ */
+struct ec_response_codec_gain {
+	uint8_t left;
+	uint8_t right;
+} __packed;
+
 /*****************************************************************************/
 /* System commands */
 

include/linux/mfd/ingenic-tcu.h

@@ -41,7 +41,7 @@
 #define TCU_TCSR_PRESCALE_LSB		3
 #define TCU_TCSR_PRESCALE_MASK		0x38
 
-#define TCU_TCSR_PWM_SD		BIT(9)	/* 0: Shutdown abruptly 1: gracefully */
+#define TCU_TCSR_PWM_SD		BIT(9)	/* 0: Shutdown gracefully 1: abruptly */
 #define TCU_TCSR_PWM_INITL_HIGH	BIT(8)	/* Sets the initial output level */
 #define TCU_TCSR_PWM_EN		BIT(7)	/* PWM pin output enable */
 

include/linux/mfd/madera/core.h

@@ -15,6 +15,7 @@
 #include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/madera/pdata.h>
+#include <linux/mutex.h>
 #include <linux/notifier.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
@@ -37,6 +38,8 @@ enum madera_type {
 
 #define MADERA_MAX_MICBIAS		4
 
+#define MADERA_MAX_HP_OUTPUT		3
+
 /* Notifier events */
 #define MADERA_NOTIFY_VOICE_TRIGGER	0x1
 #define MADERA_NOTIFY_HPDET		0x2
@@ -183,6 +186,10 @@ struct madera {
 	unsigned int num_childbias[MADERA_MAX_MICBIAS];
 
 	struct snd_soc_dapm_context *dapm;
+	struct mutex dapm_ptr_lock;
+	unsigned int hp_ena;
+	bool out_clamp[MADERA_MAX_HP_OUTPUT];
+	bool out_shorted[MADERA_MAX_HP_OUTPUT];
 
 	struct blocking_notifier_head notifier;
 };

include/linux/mfd/ti_am335x_tscadc.h

@@ -78,6 +78,8 @@
 #define STEPCONFIG_YNN		BIT(8)
 #define STEPCONFIG_XNP		BIT(9)
 #define STEPCONFIG_YPN		BIT(10)
+#define STEPCONFIG_RFP(val)	((val) << 12)
+#define STEPCONFIG_RFP_VREFP	(0x3 << 12)
 #define STEPCONFIG_INM_MASK	(0xF << 15)
 #define STEPCONFIG_INM(val)	((val) << 15)
 #define STEPCONFIG_INM_ADCREFM	STEPCONFIG_INM(8)
@@ -86,6 +88,8 @@
 #define STEPCONFIG_INP_AN4	STEPCONFIG_INP(4)
 #define STEPCONFIG_INP_ADCREFM	STEPCONFIG_INP(8)
 #define STEPCONFIG_FIFO1	BIT(26)
+#define STEPCONFIG_RFM(val)	((val) << 23)
+#define STEPCONFIG_RFM_VREFN	(0x3 << 23)
 
 /* Delay register */
 #define STEPDELAY_OPEN_MASK	(0x3FFFF << 0)

include/linux/mfd/tmio.h

@@ -79,7 +79,7 @@
 /* Some controllers have a CBSY bit */
 #define TMIO_MMC_HAVE_CBSY		BIT(11)
 
-/* Some controllers that support HS400 use use 4 taps while others use 8. */
+/* Some controllers that support HS400 use 4 taps while others use 8. */
 #define TMIO_MMC_HAVE_4TAP_HS400	BIT(13)
 
 int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);

include/linux/mmzone.h

@@ -520,6 +520,12 @@ enum pgdat_flags {
 	PGDAT_RECLAIM_LOCKED,		/* prevents concurrent reclaim */
 };
 
+enum zone_flags {
+	ZONE_BOOSTED_WATERMARK,		/* zone recently boosted watermarks.
+					 * Cleared when kswapd is woken.
+					 */
+};
+
 static inline unsigned long zone_managed_pages(struct zone *zone)
 {
 	return (unsigned long)atomic_long_read(&zone->managed_pages);

include/linux/module.h

@@ -828,7 +828,7 @@ static inline void module_bug_finalize(const Elf_Ehdr *hdr,
 static inline void module_bug_cleanup(struct module *mod) {}
 #endif	/* CONFIG_GENERIC_BUG */
 
-#ifdef RETPOLINE
+#ifdef CONFIG_RETPOLINE
 extern bool retpoline_module_ok(bool has_retpoline);
 #else
 static inline bool retpoline_module_ok(bool has_retpoline)

include/linux/netdevice.h

@@ -1483,6 +1483,7 @@ struct net_device_ops {
  * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook
  * @IFF_FAILOVER: device is a failover master device
  * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device
+ * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device
  */
 enum netdev_priv_flags {
 	IFF_802_1Q_VLAN			= 1<<0,
@@ -1514,6 +1515,7 @@ enum netdev_priv_flags {
 	IFF_NO_RX_HANDLER		= 1<<26,
 	IFF_FAILOVER			= 1<<27,
 	IFF_FAILOVER_SLAVE		= 1<<28,
+	IFF_L3MDEV_RX_HANDLER		= 1<<29,
 };
 
 #define IFF_802_1Q_VLAN			IFF_802_1Q_VLAN
@@ -1544,6 +1546,7 @@ enum netdev_priv_flags {
 #define IFF_NO_RX_HANDLER		IFF_NO_RX_HANDLER
 #define IFF_FAILOVER			IFF_FAILOVER
 #define IFF_FAILOVER_SLAVE		IFF_FAILOVER_SLAVE
+#define IFF_L3MDEV_RX_HANDLER		IFF_L3MDEV_RX_HANDLER
 
 /**
  *	struct net_device - The DEVICE structure.
@@ -4549,6 +4552,11 @@ static inline bool netif_supports_nofcs(struct net_device *dev)
 	return dev->priv_flags & IFF_SUPP_NOFCS;
 }
 
+static inline bool netif_has_l3_rx_handler(const struct net_device *dev)
+{
+	return dev->priv_flags & IFF_L3MDEV_RX_HANDLER;
+}
+
 static inline bool netif_is_l3_master(const struct net_device *dev)
 {
 	return dev->priv_flags & IFF_L3MDEV_MASTER;

include/linux/of.h

@@ -50,7 +50,6 @@ struct of_irq_controller;
 
 struct device_node {
 	const char *name;
-	const char *type;
 	phandle phandle;
 	const char *full_name;
 	struct fwnode_handle fwnode;

include/linux/pci-dma-compat.h

@@ -24,7 +24,7 @@ static inline void *
 pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
 		      dma_addr_t *dma_handle)
 {
-	return dma_zalloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
+	return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
 }
 
 static inline void

include/linux/phy.h

@@ -48,6 +48,7 @@ extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init;
+extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init;
 
 #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features)
@@ -56,6 +57,7 @@ extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_ini
 #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features)
 #define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features)
 #define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features)
+#define PHY_10GBIT_FEC_FEATURES ((unsigned long *)&phy_10gbit_fec_features)
 #define PHY_10GBIT_FULL_FEATURES ((unsigned long *)&phy_10gbit_full_features)
 
 extern const int phy_10_100_features_array[4];
@@ -467,8 +469,8 @@ struct phy_device {
  *   only works for PHYs with IDs which match this field
  * name: The friendly name of this PHY type
  * phy_id_mask: Defines the important bits of the phy_id
- * features: A list of features (speed, duplex, etc) supported
- *   by this PHY
+ * features: A mandatory list of features (speed, duplex, etc)
+ *   supported by this PHY
  * flags: A bitfield defining certain other features this PHY
  *   supports (like interrupts)
  *

include/linux/phy/phy.h

@@ -42,6 +42,7 @@ enum phy_mode {
 	PHY_MODE_PCIE,
 	PHY_MODE_ETHERNET,
 	PHY_MODE_MIPI_DPHY,
+	PHY_MODE_SATA
 };
 
 /**

include/linux/pm_opp.h

@@ -108,6 +108,7 @@ void dev_pm_opp_put(struct dev_pm_opp *opp);
 int dev_pm_opp_add(struct device *dev, unsigned long freq,
 		   unsigned long u_volt);
 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
+void dev_pm_opp_remove_all_dynamic(struct device *dev);
 
 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
 
@@ -217,6 +218,10 @@ static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
 {
 }
 
+static inline void dev_pm_opp_remove_all_dynamic(struct device *dev)
+{
+}
+
 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
 {
 	return 0;

include/linux/pm_runtime.h

@@ -105,7 +105,7 @@ static inline bool pm_runtime_callbacks_present(struct device *dev)
 
 static inline void pm_runtime_mark_last_busy(struct device *dev)
 {
-	WRITE_ONCE(dev->power.last_busy, ktime_to_ns(ktime_get()));
+	WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
 }
 
 static inline bool pm_runtime_is_irq_safe(struct device *dev)

include/linux/qcom_scm.h

@@ -13,6 +13,7 @@
 #ifndef __QCOM_SCM_H
 #define __QCOM_SCM_H
 
+#include <linux/err.h>
 #include <linux/types.h>
 #include <linux/cpumask.h>
 

include/linux/qed/qed_chain.h

@@ -663,6 +663,37 @@ out:
 static inline void qed_chain_set_prod(struct qed_chain *p_chain,
 				      u32 prod_idx, void *p_prod_elem)
 {
+	if (p_chain->mode == QED_CHAIN_MODE_PBL) {
+		u32 cur_prod, page_mask, page_cnt, page_diff;
+
+		cur_prod = is_chain_u16(p_chain) ? p_chain->u.chain16.prod_idx :
+			   p_chain->u.chain32.prod_idx;
+
+		/* Assume that number of elements in a page is power of 2 */
+		page_mask = ~p_chain->elem_per_page_mask;
+
+		/* Use "cur_prod - 1" and "prod_idx - 1" since producer index
+		 * reaches the first element of next page before the page index
+		 * is incremented. See qed_chain_produce().
+		 * Index wrap around is not a problem because the difference
+		 * between current and given producer indices is always
+		 * positive and lower than the chain's capacity.
+		 */
+		page_diff = (((cur_prod - 1) & page_mask) -
+			     ((prod_idx - 1) & page_mask)) /
+			    p_chain->elem_per_page;
+
+		page_cnt = qed_chain_get_page_cnt(p_chain);
+		if (is_chain_u16(p_chain))
+			p_chain->pbl.c.u16.prod_page_idx =
+				(p_chain->pbl.c.u16.prod_page_idx -
+				 page_diff + page_cnt) % page_cnt;
+		else
+			p_chain->pbl.c.u32.prod_page_idx =
+				(p_chain->pbl.c.u32.prod_page_idx -
+				 page_diff + page_cnt) % page_cnt;
+	}
+
 	if (is_chain_u16(p_chain))
 		p_chain->u.chain16.prod_idx = (u16) prod_idx;
 	else

include/linux/reset.h

@@ -32,6 +32,8 @@ struct reset_control *devm_reset_control_array_get(struct device *dev,
 struct reset_control *of_reset_control_array_get(struct device_node *np,
 						 bool shared, bool optional);
 
+int reset_control_get_count(struct device *dev);
+
 #else
 
 static inline int reset_control_reset(struct reset_control *rstc)
@@ -97,6 +99,11 @@ of_reset_control_array_get(struct device_node *np, bool shared, bool optional)
 	return optional ? NULL : ERR_PTR(-ENOTSUPP);
 }
 
+static inline int reset_control_get_count(struct device *dev)
+{
+	return -ENOENT;
+}
+
 #endif /* CONFIG_RESET_CONTROLLER */
 
 static inline int __must_check device_reset(struct device *dev)
@@ -138,7 +145,7 @@ __must_check reset_control_get_exclusive(struct device *dev, const char *id)
  *
  * Returns a struct reset_control or IS_ERR() condition containing errno.
  * This function is intended for use with reset-controls which are shared
- * between hardware-blocks.
+ * between hardware blocks.
  *
  * When a reset-control is shared, the behavior of reset_control_assert /
  * deassert is changed, the reset-core will keep track of a deassert_count
@@ -187,7 +194,7 @@ static inline struct reset_control *of_reset_control_get_exclusive(
 }
 
 /**
- * of_reset_control_get_shared - Lookup and obtain an shared reference
+ * of_reset_control_get_shared - Lookup and obtain a shared reference
  *                               to a reset controller.
  * @node: device to be reset by the controller
  * @id: reset line name
@@ -229,7 +236,7 @@ static inline struct reset_control *of_reset_control_get_exclusive_by_index(
 }
 
 /**
- * of_reset_control_get_shared_by_index - Lookup and obtain an shared
+ * of_reset_control_get_shared_by_index - Lookup and obtain a shared
  *                                        reference to a reset controller
  *                                        by index.
  * @node: device to be reset by the controller
@@ -322,7 +329,7 @@ devm_reset_control_get_exclusive_by_index(struct device *dev, int index)
 
 /**
  * devm_reset_control_get_shared_by_index - resource managed
- * reset_control_get_shared
+ *                                          reset_control_get_shared
  * @dev: device to be reset by the controller
  * @index: index of the reset controller
  *

include/linux/sched.h

@@ -995,7 +995,7 @@ struct task_struct {
 	/* cg_list protected by css_set_lock and tsk->alloc_lock: */
 	struct list_head		cg_list;
 #endif
-#ifdef CONFIG_RESCTRL
+#ifdef CONFIG_X86_CPU_RESCTRL
 	u32				closid;
 	u32				rmid;
 #endif
@@ -1406,6 +1406,7 @@ extern struct pid *cad_pid;
 #define PF_RANDOMIZE		0x00400000	/* Randomize virtual address space */
 #define PF_SWAPWRITE		0x00800000	/* Allowed to write to swap */
 #define PF_MEMSTALL		0x01000000	/* Stalled due to lack of memory */
+#define PF_UMH			0x02000000	/* I'm an Usermodehelper process */
 #define PF_NO_SETAFFINITY	0x04000000	/* Userland is not allowed to meddle with cpus_allowed */
 #define PF_MCE_EARLY		0x08000000      /* Early kill for mce process policy */
 #define PF_MUTEX_TESTER		0x20000000	/* Thread belongs to the rt mutex tester */
@@ -1904,6 +1905,14 @@ static inline void rseq_execve(struct task_struct *t)
 
 #endif
 
+void __exit_umh(struct task_struct *tsk);
+
+static inline void exit_umh(struct task_struct *tsk)
+{
+	if (unlikely(tsk->flags & PF_UMH))
+		__exit_umh(tsk);
+}
+
 #ifdef CONFIG_DEBUG_RSEQ
 
 void rseq_syscall(struct pt_regs *regs);

include/linux/sched/coredump.h

@@ -71,6 +71,7 @@ static inline int get_dumpable(struct mm_struct *mm)
 #define MMF_HUGE_ZERO_PAGE	23      /* mm has ever used the global huge zero page */
 #define MMF_DISABLE_THP		24	/* disable THP for all VMAs */
 #define MMF_OOM_VICTIM		25	/* mm is the oom victim */
+#define MMF_OOM_REAP_QUEUED	26	/* mm was queued for oom_reaper */
 #define MMF_DISABLE_THP_MASK	(1 << MMF_DISABLE_THP)
 
 #define MMF_INIT_MASK		(MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\

include/linux/sched/wake_q.h

@@ -24,9 +24,13 @@
  * called near the end of a function. Otherwise, the list can be
  * re-initialized for later re-use by wake_q_init().
  *
- * Note that this can cause spurious wakeups. schedule() callers
+ * NOTE that this can cause spurious wakeups. schedule() callers
  * must ensure the call is done inside a loop, confirming that the
  * wakeup condition has in fact occurred.
+ *
+ * NOTE that there is no guarantee the wakeup will happen any later than the
+ * wake_q_add() location. Therefore task must be ready to be woken at the
+ * location of the wake_q_add().
  */
 
 #include <linux/sched.h>

include/linux/signal.h

@@ -392,7 +392,7 @@ extern bool unhandled_signal(struct task_struct *tsk, int sig);
 #endif
 
 #define siginmask(sig, mask) \
-	((sig) < SIGRTMIN && (rt_sigmask(sig) & (mask)))
+	((sig) > 0 && (sig) < SIGRTMIN && (rt_sigmask(sig) & (mask)))
 
 #define SIG_KERNEL_ONLY_MASK (\
 	rt_sigmask(SIGKILL)   |  rt_sigmask(SIGSTOP))

include/linux/skbuff.h

@@ -3218,6 +3218,7 @@ int pskb_trim_rcsum_slow(struct sk_buff *skb, unsigned int len);
  *
  *	This is exactly the same as pskb_trim except that it ensures the
  *	checksum of received packets are still valid after the operation.
+ *	It can change skb pointers.
  */
 
 static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)

include/linux/stmmac.h

@@ -184,6 +184,7 @@ struct plat_stmmacenet_data {
 	struct clk *pclk;
 	struct clk *clk_ptp_ref;
 	unsigned int clk_ptp_rate;
+	unsigned int clk_ref_rate;
 	struct reset_control *stmmac_rst;
 	struct stmmac_axi *axi;
 	int has_gmac4;

include/linux/umh.h

@@ -47,6 +47,8 @@ struct umh_info {
 	const char *cmdline;
 	struct file *pipe_to_umh;
 	struct file *pipe_from_umh;
+	struct list_head list;
+	void (*cleanup)(struct umh_info *info);
 	pid_t pid;
 };
 int fork_usermode_blob(void *data, size_t len, struct umh_info *info);

include/linux/virtio_config.h

@@ -12,6 +12,11 @@ struct irq_affinity;
 
 /**
  * virtio_config_ops - operations for configuring a virtio device
+ * Note: Do not assume that a transport implements all of the operations
+ *       getting/setting a value as a simple read/write! Generally speaking,
+ *       any of @get/@set, @get_status/@set_status, or @get_features/
+ *       @finalize_features are NOT safe to be called from an atomic
+ *       context.
  * @get: read the value of a configuration field
  *	vdev: the virtio_device
  *	offset: the offset of the configuration field
@@ -22,7 +27,7 @@ struct irq_affinity;
  *	offset: the offset of the configuration field
  *	buf: the buffer to read the field value from.
  *	len: the length of the buffer
- * @generation: config generation counter
+ * @generation: config generation counter (optional)
  *	vdev: the virtio_device
  *	Returns the config generation counter
  * @get_status: read the status byte
@@ -48,17 +53,17 @@ struct irq_affinity;
  * @del_vqs: free virtqueues found by find_vqs().
  * @get_features: get the array of feature bits for this device.
  *	vdev: the virtio_device
- *	Returns the first 32 feature bits (all we currently need).
+ *	Returns the first 64 feature bits (all we currently need).
  * @finalize_features: confirm what device features we'll be using.
  *	vdev: the virtio_device
  *	This gives the final feature bits for the device: it can change
  *	the dev->feature bits if it wants.
  *	Returns 0 on success or error status
- * @bus_name: return the bus name associated with the device
+ * @bus_name: return the bus name associated with the device (optional)
  *	vdev: the virtio_device
  *      This returns a pointer to the bus name a la pci_name from which
  *      the caller can then copy.
- * @set_vq_affinity: set the affinity for a virtqueue.
+ * @set_vq_affinity: set the affinity for a virtqueue (optional).
  * @get_vq_affinity: get the affinity for a virtqueue (optional).
  */
 typedef void vq_callback_t(struct virtqueue *);

include/linux/xarray.h

@@ -176,7 +176,8 @@ static inline bool xa_is_internal(const void *entry)
  */
 static inline bool xa_is_err(const void *entry)
 {
-	return unlikely(xa_is_internal(entry));
+	return unlikely(xa_is_internal(entry) &&
+			entry >= xa_mk_internal(-MAX_ERRNO));
 }
 
 /**
@@ -286,7 +287,6 @@ struct xarray {
  */
 #define DEFINE_XARRAY_ALLOC(name) DEFINE_XARRAY_FLAGS(name, XA_FLAGS_ALLOC)
 
-void xa_init_flags(struct xarray *, gfp_t flags);
 void *xa_load(struct xarray *, unsigned long index);
 void *xa_store(struct xarray *, unsigned long index, void *entry, gfp_t);
 void *xa_erase(struct xarray *, unsigned long index);
@@ -303,6 +303,24 @@ unsigned int xa_extract(struct xarray *, void **dst, unsigned long start,
 		unsigned long max, unsigned int n, xa_mark_t);
 void xa_destroy(struct xarray *);
 
+/**
+ * xa_init_flags() - Initialise an empty XArray with flags.
+ * @xa: XArray.
+ * @flags: XA_FLAG values.
+ *
+ * If you need to initialise an XArray with special flags (eg you need
+ * to take the lock from interrupt context), use this function instead
+ * of xa_init().
+ *
+ * Context: Any context.
+ */
+static inline void xa_init_flags(struct xarray *xa, gfp_t flags)
+{
+	spin_lock_init(&xa->xa_lock);
+	xa->xa_flags = flags;
+	xa->xa_head = NULL;
+}
+
 /**
  * xa_init() - Initialise an empty XArray.
  * @xa: XArray.
@@ -342,20 +360,45 @@ static inline bool xa_marked(const struct xarray *xa, xa_mark_t mark)
 }
 
 /**
- * xa_for_each() - Iterate over a portion of an XArray.
+ * xa_for_each_start() - Iterate over a portion of an XArray.
  * @xa: XArray.
- * @entry: Entry retrieved from array.
  * @index: Index of @entry.
- * @max: Maximum index to retrieve from array.
- * @filter: Selection criterion.
+ * @entry: Entry retrieved from array.
+ * @start: First index to retrieve from array.
  *
- * Initialise @index to the lowest index you want to retrieve from the
- * array.  During the iteration, @entry will have the value of the entry
- * stored in @xa at @index.  The iteration will skip all entries in the
- * array which do not match @filter.  You may modify @index during the
- * iteration if you want to skip or reprocess indices.  It is safe to modify
- * the array during the iteration.  At the end of the iteration, @entry will
- * be set to NULL and @index will have a value less than or equal to max.
+ * During the iteration, @entry will have the value of the entry stored
+ * in @xa at @index.  You may modify @index during the iteration if you
+ * want to skip or reprocess indices.  It is safe to modify the array
+ * during the iteration.  At the end of the iteration, @entry will be set
+ * to NULL and @index will have a value less than or equal to max.
+ *
+ * xa_for_each_start() is O(n.log(n)) while xas_for_each() is O(n).  You have
+ * to handle your own locking with xas_for_each(), and if you have to unlock
+ * after each iteration, it will also end up being O(n.log(n)).
+ * xa_for_each_start() will spin if it hits a retry entry; if you intend to
+ * see retry entries, you should use the xas_for_each() iterator instead.
+ * The xas_for_each() iterator will expand into more inline code than
+ * xa_for_each_start().
+ *
+ * Context: Any context.  Takes and releases the RCU lock.
+ */
+#define xa_for_each_start(xa, index, entry, start)			\
+	for (index = start,						\
+	     entry = xa_find(xa, &index, ULONG_MAX, XA_PRESENT);	\
+	     entry;							\
+	     entry = xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT))
+
+/**
+ * xa_for_each() - Iterate over present entries in an XArray.
+ * @xa: XArray.
+ * @index: Index of @entry.
+ * @entry: Entry retrieved from array.
+ *
+ * During the iteration, @entry will have the value of the entry stored
+ * in @xa at @index.  You may modify @index during the iteration if you want
+ * to skip or reprocess indices.  It is safe to modify the array during the
+ * iteration.  At the end of the iteration, @entry will be set to NULL and
+ * @index will have a value less than or equal to max.
  *
  * xa_for_each() is O(n.log(n)) while xas_for_each() is O(n).  You have
  * to handle your own locking with xas_for_each(), and if you have to unlock
@@ -366,9 +409,36 @@ static inline bool xa_marked(const struct xarray *xa, xa_mark_t mark)
  *
  * Context: Any context.  Takes and releases the RCU lock.
  */
-#define xa_for_each(xa, entry, index, max, filter) \
-	for (entry = xa_find(xa, &index, max, filter); entry; \
-	     entry = xa_find_after(xa, &index, max, filter))
+#define xa_for_each(xa, index, entry) \
+	xa_for_each_start(xa, index, entry, 0)
+
+/**
+ * xa_for_each_marked() - Iterate over marked entries in an XArray.
+ * @xa: XArray.
+ * @index: Index of @entry.
+ * @entry: Entry retrieved from array.
+ * @filter: Selection criterion.
+ *
+ * During the iteration, @entry will have the value of the entry stored
+ * in @xa at @index.  The iteration will skip all entries in the array
+ * which do not match @filter.  You may modify @index during the iteration
+ * if you want to skip or reprocess indices.  It is safe to modify the array
+ * during the iteration.  At the end of the iteration, @entry will be set to
+ * NULL and @index will have a value less than or equal to max.
+ *
+ * xa_for_each_marked() is O(n.log(n)) while xas_for_each_marked() is O(n).
+ * You have to handle your own locking with xas_for_each(), and if you have
+ * to unlock after each iteration, it will also end up being O(n.log(n)).
+ * xa_for_each_marked() will spin if it hits a retry entry; if you intend to
+ * see retry entries, you should use the xas_for_each_marked() iterator
+ * instead.  The xas_for_each_marked() iterator will expand into more inline
+ * code than xa_for_each_marked().
+ *
+ * Context: Any context.  Takes and releases the RCU lock.
+ */
+#define xa_for_each_marked(xa, index, entry, filter) \
+	for (index = 0, entry = xa_find(xa, &index, ULONG_MAX, filter); \
+	     entry; entry = xa_find_after(xa, &index, ULONG_MAX, filter))
 
 #define xa_trylock(xa)		spin_trylock(&(xa)->xa_lock)
 #define xa_lock(xa)		spin_lock(&(xa)->xa_lock)
@@ -393,39 +463,12 @@ void *__xa_erase(struct xarray *, unsigned long index);
 void *__xa_store(struct xarray *, unsigned long index, void *entry, gfp_t);
 void *__xa_cmpxchg(struct xarray *, unsigned long index, void *old,
 		void *entry, gfp_t);
+int __xa_insert(struct xarray *, unsigned long index, void *entry, gfp_t);
 int __xa_alloc(struct xarray *, u32 *id, u32 max, void *entry, gfp_t);
 int __xa_reserve(struct xarray *, unsigned long index, gfp_t);
 void __xa_set_mark(struct xarray *, unsigned long index, xa_mark_t);
 void __xa_clear_mark(struct xarray *, unsigned long index, xa_mark_t);
 
-/**
- * __xa_insert() - Store this entry in the XArray unless another entry is
- *			already present.
- * @xa: XArray.
- * @index: Index into array.
- * @entry: New entry.
- * @gfp: Memory allocation flags.
- *
- * If you would rather see the existing entry in the array, use __xa_cmpxchg().
- * This function is for users who don't care what the entry is, only that
- * one is present.
- *
- * Context: Any context.  Expects xa_lock to be held on entry.  May
- *	    release and reacquire xa_lock if the @gfp flags permit.
- * Return: 0 if the store succeeded.  -EEXIST if another entry was present.
- * -ENOMEM if memory could not be allocated.
- */
-static inline int __xa_insert(struct xarray *xa, unsigned long index,
-		void *entry, gfp_t gfp)
-{
-	void *curr = __xa_cmpxchg(xa, index, NULL, entry, gfp);
-	if (!curr)
-		return 0;
-	if (xa_is_err(curr))
-		return xa_err(curr);
-	return -EEXIST;
-}
-
 /**
  * xa_store_bh() - Store this entry in the XArray.
  * @xa: XArray.
@@ -453,7 +496,7 @@ static inline void *xa_store_bh(struct xarray *xa, unsigned long index,
 }
 
 /**
- * xa_store_irq() - Erase this entry from the XArray.
+ * xa_store_irq() - Store this entry in the XArray.
  * @xa: XArray.
  * @index: Index into array.
  * @entry: New entry.
@@ -615,24 +658,83 @@ static inline void *xa_cmpxchg_irq(struct xarray *xa, unsigned long index,
  * @entry: New entry.
  * @gfp: Memory allocation flags.
  *
- * If you would rather see the existing entry in the array, use xa_cmpxchg().
- * This function is for users who don't care what the entry is, only that
- * one is present.
+ * Inserting a NULL entry will store a reserved entry (like xa_reserve())
+ * if no entry is present.  Inserting will fail if a reserved entry is
+ * present, even though loading from this index will return NULL.
  *
- * Context: Process context.  Takes and releases the xa_lock.
- *	    May sleep if the @gfp flags permit.
+ * Context: Any context.  Takes and releases the xa_lock.  May sleep if
+ * the @gfp flags permit.
  * Return: 0 if the store succeeded.  -EEXIST if another entry was present.
  * -ENOMEM if memory could not be allocated.
  */
 static inline int xa_insert(struct xarray *xa, unsigned long index,
 		void *entry, gfp_t gfp)
 {
-	void *curr = xa_cmpxchg(xa, index, NULL, entry, gfp);
-	if (!curr)
-		return 0;
-	if (xa_is_err(curr))
-		return xa_err(curr);
-	return -EEXIST;
+	int err;
+
+	xa_lock(xa);
+	err = __xa_insert(xa, index, entry, gfp);
+	xa_unlock(xa);
+
+	return err;
+}
+
+/**
+ * xa_insert_bh() - Store this entry in the XArray unless another entry is
+ *			already present.
+ * @xa: XArray.
+ * @index: Index into array.
+ * @entry: New entry.
+ * @gfp: Memory allocation flags.
+ *
+ * Inserting a NULL entry will store a reserved entry (like xa_reserve())
+ * if no entry is present.  Inserting will fail if a reserved entry is
+ * present, even though loading from this index will return NULL.
+ *
+ * Context: Any context.  Takes and releases the xa_lock while
+ * disabling softirqs.  May sleep if the @gfp flags permit.
+ * Return: 0 if the store succeeded.  -EEXIST if another entry was present.
+ * -ENOMEM if memory could not be allocated.
+ */
+static inline int xa_insert_bh(struct xarray *xa, unsigned long index,
+		void *entry, gfp_t gfp)
+{
+	int err;
+
+	xa_lock_bh(xa);
+	err = __xa_insert(xa, index, entry, gfp);
+	xa_unlock_bh(xa);
+
+	return err;
+}
+
+/**
+ * xa_insert_irq() - Store this entry in the XArray unless another entry is
+ *			already present.
+ * @xa: XArray.
+ * @index: Index into array.
+ * @entry: New entry.
+ * @gfp: Memory allocation flags.
+ *
+ * Inserting a NULL entry will store a reserved entry (like xa_reserve())
+ * if no entry is present.  Inserting will fail if a reserved entry is
+ * present, even though loading from this index will return NULL.
+ *
+ * Context: Process context.  Takes and releases the xa_lock while
+ * disabling interrupts.  May sleep if the @gfp flags permit.
+ * Return: 0 if the store succeeded.  -EEXIST if another entry was present.
+ * -ENOMEM if memory could not be allocated.
+ */
+static inline int xa_insert_irq(struct xarray *xa, unsigned long index,
+		void *entry, gfp_t gfp)
+{
+	int err;
+
+	xa_lock_irq(xa);
+	err = __xa_insert(xa, index, entry, gfp);
+	xa_unlock_irq(xa);
+
+	return err;
 }
 
 /**
@@ -970,8 +1072,8 @@ static inline bool xa_is_sibling(const void *entry)
 		(entry < xa_mk_sibling(XA_CHUNK_SIZE - 1));
 }
 
-#define XA_ZERO_ENTRY		xa_mk_internal(256)
-#define XA_RETRY_ENTRY		xa_mk_internal(257)
+#define XA_RETRY_ENTRY		xa_mk_internal(256)
+#define XA_ZERO_ENTRY		xa_mk_internal(257)
 
 /**
  * xa_is_zero() - Is the entry a zero entry?
@@ -995,6 +1097,17 @@ static inline bool xa_is_retry(const void *entry)
 	return unlikely(entry == XA_RETRY_ENTRY);
 }
 
+/**
+ * xa_is_advanced() - Is the entry only permitted for the advanced API?
+ * @entry: Entry to be stored in the XArray.
+ *
+ * Return: %true if the entry cannot be stored by the normal API.
+ */
+static inline bool xa_is_advanced(const void *entry)
+{
+	return xa_is_internal(entry) && (entry <= XA_RETRY_ENTRY);
+}
+
 /**
  * typedef xa_update_node_t - A callback function from the XArray.
  * @node: The node which is being processed