16 files changed, 92 insertions, 36 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c3e8f7cf96be..172c91879999 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1505,16 +1505,6 @@ struct blk_holder_ops {
 	 * Thaw the file system mounted on the block device.
 	 */
 	int (*thaw)(struct block_device *bdev);
-
-	/*
-	 * If needed, get a reference to the holder.
-	 */
-	void (*get_holder)(void *holder);
-
-	/*
-	 * Release the holder.
-	 */
-	void (*put_holder)(void *holder);
 };
 
 /*
@@ -1585,6 +1575,7 @@ static inline int early_lookup_bdev(const char *pathname, dev_t *dev)
 
 int bdev_freeze(struct block_device *bdev);
 int bdev_thaw(struct block_device *bdev);
+void bdev_fput(struct file *bdev_file);
 
 struct io_comp_batch {
 	struct request *req_list;
diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index ca73940e26df..e5ee2c694401 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -10,6 +10,7 @@
 #ifdef __KERNEL__
 #include <linux/kernel.h>
 #include <linux/types.h>
+bool __init cmdline_has_extra_options(void);
 #else /* !__KERNEL__ */
 /*
  * NOTE: This is only for tools/bootconfig, because tools/bootconfig will
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
index cb0d6cd1c12f..60693a145894 100644
--- a/include/linux/cc_platform.h
+++ b/include/linux/cc_platform.h
@@ -90,6 +90,14 @@ enum cc_attr {
 	 * Examples include TDX Guest.
 	 */
 	CC_ATTR_HOTPLUG_DISABLED,
+
+	/**
+	 * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host.
+	 *
+	 * The host kernel is running with the necessary features
+	 * enabled to run SEV-SNP guests.
+	 */
+	CC_ATTR_HOST_SEV_SNP,
 };
 
 #ifdef CONFIG_ARCH_HAS_CC_PLATFORM
@@ -107,10 +115,14 @@ enum cc_attr {
  * * FALSE - Specified Confidential Computing attribute is not active
  */
 bool cc_platform_has(enum cc_attr attr);
+void cc_platform_set(enum cc_attr attr);
+void cc_platform_clear(enum cc_attr attr);
 
 #else	/* !CONFIG_ARCH_HAS_CC_PLATFORM */
 
 static inline bool cc_platform_has(enum cc_attr attr) { return false; }
+static inline void cc_platform_set(enum cc_attr attr) { }
+static inline void cc_platform_clear(enum cc_attr attr) { }
 
 #endif	/* CONFIG_ARCH_HAS_CC_PLATFORM */
 
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index c00cc6c0878a..8c252e073bd8 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -268,7 +268,7 @@ static inline void *offset_to_ptr(const int *off)
  *   - When one operand is a null pointer constant (i.e. when x is an integer
  *     constant expression) and the other is an object pointer (i.e. our
  *     third operand), the conditional operator returns the type of the
- *     object pointer operand (i.e. "int *). Here, within the sizeof(), we
+ *     object pointer operand (i.e. "int *"). Here, within the sizeof(), we
  *     would then get:
  *       sizeof(*((int *)(...))  == sizeof(int)  == 4
  *   - When one operand is a void pointer (i.e. when x is not an integer
diff --git a/include/linux/device.h b/include/linux/device.h
index 97c4b046c09d..b9f5464f44ed 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1247,6 +1247,7 @@ void device_link_del(struct device_link *link);
 void device_link_remove(void *consumer, struct device *supplier);
 void device_links_supplier_sync_state_pause(void);
 void device_links_supplier_sync_state_resume(void);
+void device_link_wait_removal(void);
 
 /* Create alias, so I can be autoloaded. */
 #define MODULE_ALIAS_CHARDEV(major,minor) \
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index 770755df852f..70cd7258cd29 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -245,7 +245,6 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd,
 	 * max utilization to the allowed CPU capacity before calculating
 	 * effective performance.
 	 */
-	max_util = map_util_perf(max_util);
 	max_util = min(max_util, allowed_cpu_cap);
 
 	/*
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 00fc429b0af0..8dfd53b52744 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -121,6 +121,8 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 #define FMODE_PWRITE		((__force fmode_t)0x10)
 /* File is opened for execution with sys_execve / sys_uselib */
 #define FMODE_EXEC		((__force fmode_t)0x20)
+/* File writes are restricted (block device specific) */
+#define FMODE_WRITE_RESTRICTED  ((__force fmode_t)0x40)
 /* 32bit hashes as llseek() offset (for directories) */
 #define FMODE_32BITHASH         ((__force fmode_t)0x200)
 /* 64bit hashes as llseek() offset (for directories) */
diff --git a/include/linux/gfp_types.h b/include/linux/gfp_types.h
index 868c8fb1bbc1..13becafe41df 100644
--- a/include/linux/gfp_types.h
+++ b/include/linux/gfp_types.h
@@ -2,6 +2,8 @@
 #ifndef __LINUX_GFP_TYPES_H
 #define __LINUX_GFP_TYPES_H
 
+#include <linux/bits.h>
+
 /* The typedef is in types.h but we want the documentation here */
 #if 0
 /**
diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index e24893625085..05df0e399d7c 100644
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -294,7 +294,6 @@ struct io_ring_ctx {
 
 		struct io_submit_state	submit_state;
 
-		struct io_buffer_list	*io_bl;
 		struct xarray		io_bl_xa;
 
 		struct io_hash_table	cancel_table_locked;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0436b919f1c7..7b0ee64225de 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2207,11 +2207,6 @@ static inline int arch_make_folio_accessible(struct folio *folio)
  */
 #include <linux/vmstat.h>
 
-static __always_inline void *lowmem_page_address(const struct page *page)
-{
-	return page_to_virt(page);
-}
-
 #if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL)
 #define HASHED_PAGE_VIRTUAL
 #endif
@@ -2234,6 +2229,11 @@ void set_page_address(struct page *page, void *virtual);
 void page_address_init(void);
 #endif
 
+static __always_inline void *lowmem_page_address(const struct page *page)
+{
+	return page_to_virt(page);
+}
+
 #if !defined(HASHED_PAGE_VIRTUAL) && !defined(WANT_PAGE_VIRTUAL)
 #define page_address(page) lowmem_page_address(page)
 #define set_page_address(page, address)  do { } while(0)
diff --git a/include/linux/randomize_kstack.h b/include/linux/randomize_kstack.h
index 5d868505a94e..6d92b68efbf6 100644
--- a/include/linux/randomize_kstack.h
+++ b/include/linux/randomize_kstack.h
@@ -80,7 +80,7 @@ DECLARE_PER_CPU(u32, kstack_offset);
 	if (static_branch_maybe(CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT,	\
 				&randomize_kstack_offset)) {		\
 		u32 offset = raw_cpu_read(kstack_offset);		\
-		offset ^= (rand);					\
+		offset = ror32(offset, 5) ^ (rand);			\
 		raw_cpu_write(kstack_offset, offset);			\
 	}								\
 } while (0)
diff --git a/include/linux/secretmem.h b/include/linux/secretmem.h
index 35f3a4a8ceb1..acf7e1a3f3de 100644
--- a/include/linux/secretmem.h
+++ b/include/linux/secretmem.h
@@ -13,10 +13,10 @@ static inline bool folio_is_secretmem(struct folio *folio)
 	/*
 	 * Using folio_mapping() is quite slow because of the actual call
 	 * instruction.
-	 * We know that secretmem pages are not compound and LRU so we can
+	 * We know that secretmem pages are not compound, so we can
 	 * save a couple of cycles here.
 	 */
-	if (folio_test_large(folio) || !folio_test_lru(folio))
+	if (folio_test_large(folio))
 		return false;
 
 	mapping = (struct address_space *)
diff --git a/include/linux/stackdepot.h b/include/linux/stackdepot.h
index 3c6caa5abc7c..e9ec32fb97d4 100644
--- a/include/linux/stackdepot.h
+++ b/include/linux/stackdepot.h
@@ -44,10 +44,9 @@ typedef u32 depot_stack_handle_t;
 union handle_parts {
 	depot_stack_handle_t handle;
 	struct {
-		/* pool_index is offset by 1 */
-		u32 pool_index	: DEPOT_POOL_INDEX_BITS;
-		u32 offset	: DEPOT_OFFSET_BITS;
-		u32 extra	: STACK_DEPOT_EXTRA_BITS;
+		u32 pool_index_plus_1	: DEPOT_POOL_INDEX_BITS;
+		u32 offset		: DEPOT_OFFSET_BITS;
+		u32 extra		: STACK_DEPOT_EXTRA_BITS;
 	};
 };
 
diff --git a/include/linux/timecounter.h b/include/linux/timecounter.h
index c6540ceea143..0982d1d52b24 100644
--- a/include/linux/timecounter.h
+++ b/include/linux/timecounter.h
@@ -22,7 +22,7 @@
  *
  * @read:		returns the current cycle value
  * @mask:		bitmask for two's complement
- *			subtraction of non 64 bit counters,
+ *			subtraction of non-64-bit counters,
  *			see CYCLECOUNTER_MASK() helper macro
  * @mult:		cycle to nanosecond multiplier
  * @shift:		cycle to nanosecond divisor (power of two)
@@ -35,7 +35,7 @@ struct cyclecounter {
 };
 
 /**
- * struct timecounter - layer above a %struct cyclecounter which counts nanoseconds
+ * struct timecounter - layer above a &struct cyclecounter which counts nanoseconds
  *	Contains the state needed by timecounter_read() to detect
  *	cycle counter wrap around. Initialize with
  *	timecounter_init(). Also used to convert cycle counts into the
@@ -66,6 +66,8 @@ struct timecounter {
  * @cycles:	Cycles
  * @mask:	bit mask for maintaining the 'frac' field
  * @frac:	pointer to storage for the fractional nanoseconds.
+ *
+ * Returns: cycle counter cycles converted to nanoseconds
  */
 static inline u64 cyclecounter_cyc2ns(const struct cyclecounter *cc,
 				      u64 cycles, u64 mask, u64 *frac)
@@ -79,6 +81,7 @@ static inline u64 cyclecounter_cyc2ns(const struct cyclecounter *cc,
 
 /**
  * timecounter_adjtime - Shifts the time of the clock.
+ * @tc:		The &struct timecounter to adjust
  * @delta:	Desired change in nanoseconds.
  */
 static inline void timecounter_adjtime(struct timecounter *tc, s64 delta)
@@ -107,6 +110,8 @@ extern void timecounter_init(struct timecounter *tc,
  *
  * In other words, keeps track of time since the same epoch as
  * the function which generated the initial time stamp.
+ *
+ * Returns: nanoseconds since the initial time stamp
  */
 extern u64 timecounter_read(struct timecounter *tc);
 
@@ -123,6 +128,8 @@ extern u64 timecounter_read(struct timecounter *tc);
  *
  * This allows conversion of cycle counter values which were generated
  * in the past.
+ *
+ * Returns: cycle counter converted to nanoseconds since the initial time stamp
  */
 extern u64 timecounter_cyc2time(const struct timecounter *tc,
 				u64 cycle_tstamp);
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 7e50cbd97f86..0ea7823b7f31 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -22,14 +22,14 @@ extern int do_sys_settimeofday64(const struct timespec64 *tv,
 				 const struct timezone *tz);
 
 /*
- * ktime_get() family: read the current time in a multitude of ways,
+ * ktime_get() family - read the current time in a multitude of ways.
  *
  * The default time reference is CLOCK_MONOTONIC, starting at
  * boot time but not counting the time spent in suspend.
  * For other references, use the functions with "real", "clocktai",
  * "boottime" and "raw" suffixes.
  *
- * To get the time in a different format, use the ones wit
+ * To get the time in a different format, use the ones with
  * "ns", "ts64" and "seconds" suffix.
  *
  * See Documentation/core-api/timekeeping.rst for more details.
@@ -74,6 +74,8 @@ extern u32 ktime_get_resolution_ns(void);
 
 /**
  * ktime_get_real - get the real (wall-) time in ktime_t format
+ *
+ * Returns: real (wall) time in ktime_t format
  */
 static inline ktime_t ktime_get_real(void)
 {
@@ -86,10 +88,12 @@ static inline ktime_t ktime_get_coarse_real(void)
 }
 
 /**
- * ktime_get_boottime - Returns monotonic time since boot in ktime_t format
+ * ktime_get_boottime - Get monotonic time since boot in ktime_t format
  *
  * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
  * time spent in suspend.
+ *
+ * Returns: monotonic time since boot in ktime_t format
  */
 static inline ktime_t ktime_get_boottime(void)
 {
@@ -102,7 +106,9 @@ static inline ktime_t ktime_get_coarse_boottime(void)
 }
 
 /**
- * ktime_get_clocktai - Returns the TAI time of day in ktime_t format
+ * ktime_get_clocktai - Get the TAI time of day in ktime_t format
+ *
+ * Returns: the TAI time of day in ktime_t format
  */
 static inline ktime_t ktime_get_clocktai(void)
 {
@@ -144,32 +150,60 @@ static inline u64 ktime_get_coarse_clocktai_ns(void)
 
 /**
  * ktime_mono_to_real - Convert monotonic time to clock realtime
+ * @mono: monotonic time to convert
+ *
+ * Returns: time converted to realtime clock
  */
 static inline ktime_t ktime_mono_to_real(ktime_t mono)
 {
 	return ktime_mono_to_any(mono, TK_OFFS_REAL);
 }
 
+/**
+ * ktime_get_ns - Get the current time in nanoseconds
+ *
+ * Returns: current time converted to nanoseconds
+ */
 static inline u64 ktime_get_ns(void)
 {
 	return ktime_to_ns(ktime_get());
 }
 
+/**
+ * ktime_get_real_ns - Get the current real/wall time in nanoseconds
+ *
+ * Returns: current real time converted to nanoseconds
+ */
 static inline u64 ktime_get_real_ns(void)
 {
 	return ktime_to_ns(ktime_get_real());
 }
 
+/**
+ * ktime_get_boottime_ns - Get the monotonic time since boot in nanoseconds
+ *
+ * Returns: current boottime converted to nanoseconds
+ */
 static inline u64 ktime_get_boottime_ns(void)
 {
 	return ktime_to_ns(ktime_get_boottime());
 }
 
+/**
+ * ktime_get_clocktai_ns - Get the current TAI time of day in nanoseconds
+ *
+ * Returns: current TAI time converted to nanoseconds
+ */
 static inline u64 ktime_get_clocktai_ns(void)
 {
 	return ktime_to_ns(ktime_get_clocktai());
 }
 
+/**
+ * ktime_get_raw_ns - Get the raw monotonic time in nanoseconds
+ *
+ * Returns: current raw monotonic time converted to nanoseconds
+ */
 static inline u64 ktime_get_raw_ns(void)
 {
 	return ktime_to_ns(ktime_get_raw());
@@ -224,8 +258,8 @@ extern bool timekeeping_rtc_skipresume(void);
 
 extern void timekeeping_inject_sleeptime64(const struct timespec64 *delta);
 
-/*
- * struct ktime_timestanps - Simultaneous mono/boot/real timestamps
+/**
+ * struct ktime_timestamps - Simultaneous mono/boot/real timestamps
  * @mono:	Monotonic timestamp
  * @boot:	Boottime timestamp
  * @real:	Realtime timestamp
@@ -242,7 +276,8 @@ struct ktime_timestamps {
  * @cycles:	Clocksource counter value to produce the system times
  * @real:	Realtime system time
  * @raw:	Monotonic raw system time
- * @clock_was_set_seq:	The sequence number of clock was set events
+ * @cs_id:	Clocksource ID
+ * @clock_was_set_seq:	The sequence number of clock-was-set events
  * @cs_was_changed_seq:	The sequence number of clocksource change events
  */
 struct system_time_snapshot {
diff --git a/include/linux/timer.h b/include/linux/timer.h
index 14a633ba61d6..e67ecd1cbc97 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -22,7 +22,7 @@
 #define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)
 #endif
 
-/**
+/*
  * @TIMER_DEFERRABLE: A deferrable timer will work normally when the
  * system is busy, but will not cause a CPU to come out of idle just
  * to service it; instead, the timer will be serviced when the CPU
@@ -140,7 +140,7 @@ static inline void destroy_timer_on_stack(struct timer_list *timer) { }
  * or not. Callers must ensure serialization wrt. other operations done
  * to this timer, eg. interrupt contexts, or other CPUs on SMP.
  *
- * return value: 1 if the timer is pending, 0 if not.
+ * Returns: 1 if the timer is pending, 0 if not.
  */
 static inline int timer_pending(const struct timer_list * timer)
 {
@@ -175,6 +175,10 @@ extern int timer_shutdown(struct timer_list *timer);
  * See timer_delete_sync() for detailed explanation.
  *
  * Do not use in new code. Use timer_delete_sync() instead.
+ *
+ * Returns:
+ * * %0	- The timer was not pending
+ * * %1	- The timer was pending and deactivated
  */
 static inline int del_timer_sync(struct timer_list *timer)
 {
@@ -188,6 +192,10 @@ static inline int del_timer_sync(struct timer_list *timer)
  * See timer_delete() for detailed explanation.
  *
  * Do not use in new code. Use timer_delete() instead.
+ *
+ * Returns:
+ * * %0	- The timer was not pending
+ * * %1	- The timer was pending and deactivated
  */
 static inline int del_timer(struct timer_list *timer)
 {