Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
   heap optimizations".

 - Kuan-Wei Chiu has also sped up the library sorting code in the series
   "lib/sort: Optimize the number of swaps and comparisons".

 - Alexey Gladkov has added the ability for code running within an IPC
   namespace to alter its IPC and MQ limits. The series is "Allow to
   change ipc/mq sysctls inside ipc namespace".

 - Geert Uytterhoeven has contributed some dhrystone maintenance work in
   the series "lib: dhry: miscellaneous cleanups".

 - Ryusuke Konishi continues nilfs2 maintenance work in the series

	"nilfs2: eliminate kmap and kmap_atomic calls"
	"nilfs2: fix kernel bug at submit_bh_wbc()"

 - Nathan Chancellor has updated our build tools requirements in the
   series "Bump the minimum supported version of LLVM to 13.0.1".

 - Muhammad Usama Anjum continues with the selftests maintenance work in
   the series "selftests/mm: Improve run_vmtests.sh".

 - Oleg Nesterov has done some maintenance work against the signal code
   in the series "get_signal: minor cleanups and fix".

Plus the usual shower of singleton patches in various parts of the tree.
Please see the individual changelogs for details.

* tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits)
  nilfs2: prevent kernel bug at submit_bh_wbc()
  nilfs2: fix failure to detect DAT corruption in btree and direct mappings
  ocfs2: enable ocfs2_listxattr for special files
  ocfs2: remove SLAB_MEM_SPREAD flag usage
  assoc_array: fix the return value in assoc_array_insert_mid_shortcut()
  buildid: use kmap_local_page()
  watchdog/core: remove sysctl handlers from public header
  nilfs2: use div64_ul() instead of do_div()
  mul_u64_u64_div_u64: increase precision by conditionally swapping a and b
  kexec: copy only happens before uchunk goes to zero
  get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task
  get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig
  get_signal: don't abuse ksig->info.si_signo and ksig->sig
  const_structs.checkpatch: add device_type
  Normalise "name (ad@dr)" MODULE_AUTHORs to "name <ad@dr>"
  dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace()
  list: leverage list_is_head() for list_entry_is_head()
  nilfs2: MAINTAINERS: drop unreachable project mirror site
  smp: make __smp_processor_id() 0-argument macro
  fat: fix uninitialized field in nostale filehandles
  ...

7 files changed, 44 insertions, 72 deletions

diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index ddab1ef22bee..49feac0162a5 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -9,7 +9,7 @@
  * Clang prior to 17 is being silly and considers many __cleanup() variables
  * as unused (because they are, their sole purpose is to go out of scope).
  *
- * https://reviews.llvm.org/D152180
+ * https://github.com/llvm/llvm-project/commit/877210faa447f4cc7db87812f8ed80e398fedd61
  */
 #undef __cleanup
 #define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
@@ -114,11 +114,7 @@
 #define __diag_str(s)		__diag_str1(s)
 #define __diag(s)		_Pragma(__diag_str(clang diagnostic s))
 
-#if CONFIG_CLANG_VERSION >= 110000
-#define __diag_clang_11(s)	__diag(s)
-#else
-#define __diag_clang_11(s)
-#endif
+#define __diag_clang_13(s)	__diag(s)
 
 #define __diag_ignore_all(option, comment) \
-	__diag_clang(11, ignore, option)
+	__diag_clang(13, ignore, option)
diff --git a/include/linux/flex_proportions.h b/include/linux/flex_proportions.h
index 3e378b1fb0bc..e9a72fd0bfe7 100644
--- a/include/linux/flex_proportions.h
+++ b/include/linux/flex_proportions.h
@@ -39,38 +39,6 @@ void fprop_global_destroy(struct fprop_global *p);
 bool fprop_new_period(struct fprop_global *p, int periods);
 
 /*
- *  ---- SINGLE ----
- */
-struct fprop_local_single {
-	/* the local events counter */
-	unsigned long events;
-	/* Period in which we last updated events */
-	unsigned int period;
-	raw_spinlock_t lock;	/* Protect period and numerator */
-};
-
-#define INIT_FPROP_LOCAL_SINGLE(name)			\
-{	.lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock),	\
-}
-
-int fprop_local_init_single(struct fprop_local_single *pl);
-void fprop_local_destroy_single(struct fprop_local_single *pl);
-void __fprop_inc_single(struct fprop_global *p, struct fprop_local_single *pl);
-void fprop_fraction_single(struct fprop_global *p,
-	struct fprop_local_single *pl, unsigned long *numerator,
-	unsigned long *denominator);
-
-static inline
-void fprop_inc_single(struct fprop_global *p, struct fprop_local_single *pl)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	__fprop_inc_single(p, pl);
-	local_irq_restore(flags);
-}
-
-/*
  * ---- PERCPU ----
  */
 struct fprop_local_percpu {
diff --git a/include/linux/list.h b/include/linux/list.h
index 059aa1fff41e..5f4b0a39cf46 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -766,7 +766,7 @@ static inline size_t list_count_nodes(struct list_head *head)
  * @member:	the name of the list_head within the struct.
  */
 #define list_entry_is_head(pos, head, member)				\
-	(&pos->member == (head))
+	list_is_head(&pos->member, (head))
 
 /**
  * list_for_each_entry	-	iterate over list of given type
@@ -1195,4 +1195,19 @@ static inline void hlist_splice_init(struct hlist_head *from,
 	     pos && ({ n = pos->member.next; 1; });			\
 	     pos = hlist_entry_safe(n, typeof(*pos), member))
 
+/**
+ * hlist_count_nodes - count nodes in the hlist
+ * @head:	the head for your hlist.
+ */
+static inline size_t hlist_count_nodes(struct hlist_head *head)
+{
+	struct hlist_node *pos;
+	size_t count = 0;
+
+	hlist_for_each(pos, head)
+		count++;
+
+	return count;
+}
+
 #endif
diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h
index 44077837385f..d52daf45861b 100644
--- a/include/linux/min_heap.h
+++ b/include/linux/min_heap.h
@@ -35,31 +35,33 @@ static __always_inline
 void min_heapify(struct min_heap *heap, int pos,
 		const struct min_heap_callbacks *func)
 {
-	void *left, *right, *parent, *smallest;
+	void *left, *right;
 	void *data = heap->data;
+	void *root = data + pos * func->elem_size;
+	int i = pos, j;
 
+	/* Find the sift-down path all the way to the leaves. */
 	for (;;) {
-		if (pos * 2 + 1 >= heap->nr)
+		if (i * 2 + 2 >= heap->nr)
 			break;
+		left = data + (i * 2 + 1) * func->elem_size;
+		right = data + (i * 2 + 2) * func->elem_size;
+		i = func->less(left, right) ? i * 2 + 1 : i * 2 + 2;
+	}
 
-		left = data + ((pos * 2 + 1) * func->elem_size);
-		parent = data + (pos * func->elem_size);
-		smallest = parent;
-		if (func->less(left, smallest))
-			smallest = left;
-
-		if (pos * 2 + 2 < heap->nr) {
-			right = data + ((pos * 2 + 2) * func->elem_size);
-			if (func->less(right, smallest))
-				smallest = right;
-		}
-		if (smallest == parent)
-			break;
-		func->swp(smallest, parent);
-		if (smallest == left)
-			pos = (pos * 2) + 1;
-		else
-			pos = (pos * 2) + 2;
+	/* Special case for the last leaf with no sibling. */
+	if (i * 2 + 2 == heap->nr)
+		i = i * 2 + 1;
+
+	/* Backtrack to the correct location. */
+	while (i != pos && func->less(root, data + i * func->elem_size))
+		i = (i - 1) / 2;
+
+	/* Shift the element into its correct place. */
+	j = i;
+	while (i != pos) {
+		i = (i - 1) / 2;
+		func->swp(data + i * func->elem_size, data + j * func->elem_size);
 	}
 }
 
@@ -70,7 +72,7 @@ void min_heapify_all(struct min_heap *heap,
 {
 	int i;
 
-	for (i = heap->nr / 2; i >= 0; i--)
+	for (i = heap->nr / 2 - 1; i >= 0; i--)
 		min_heapify(heap, i, func);
 }
 
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index e92e378df000..f53438eae815 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -216,13 +216,6 @@ void watchdog_update_hrtimer_threshold(u64 period);
 static inline void watchdog_update_hrtimer_threshold(u64 period) { }
 #endif
 
-struct ctl_table;
-int proc_watchdog(struct ctl_table *, int, void *, size_t *, loff_t *);
-int proc_nmi_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_soft_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_watchdog_thresh(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_watchdog_cpumask(struct ctl_table *, int, void *, size_t *, loff_t *);
-
 #ifdef CONFIG_HAVE_ACPI_APEI_NMI
 #include <asm/nmi.h>
 #endif
diff --git a/include/linux/start_kernel.h b/include/linux/start_kernel.h
index a9806a44a605..09f994ac87df 100644
--- a/include/linux/start_kernel.h
+++ b/include/linux/start_kernel.h
@@ -9,7 +9,5 @@
    up something else. */
 
 extern asmlinkage void __init __noreturn start_kernel(void);
-extern void __init __noreturn arch_call_rest_init(void);
-extern void __ref __noreturn rest_init(void);
 
 #endif /* _LINUX_START_KERNEL_H */
diff --git a/include/linux/win_minmax.h b/include/linux/win_minmax.h
index 4ca2842d2842..6a5bb052fcc2 100644
--- a/include/linux/win_minmax.h
+++ b/include/linux/win_minmax.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/**
- * lib/minmax.c: windowed min/max tracker by Kathleen Nichols.
+/*
+ * win_minmax.h: windowed min/max tracker by Kathleen Nichols.
  *
  */
 #ifndef MINMAX_H