Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:
 "191 patches.

  Subsystems affected by this patch series: kthread, ia64, scripts,
  ntfs, squashfs, ocfs2, kernel/watchdog, and mm (gup, pagealloc, slab,
  slub, kmemleak, dax, debug, pagecache, gup, swap, memcg, pagemap,
  mprotect, bootmem, dma, tracing, vmalloc, kasan, initialization,
  pagealloc, and memory-failure)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (191 commits)
  mm,hwpoison: make get_hwpoison_page() call get_any_page()
  mm,hwpoison: send SIGBUS with error virutal address
  mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes
  mm/page_alloc: allow high-order pages to be stored on the per-cpu lists
  mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM
  mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA
  docs: remove description of DISCONTIGMEM
  arch, mm: remove stale mentions of DISCONIGMEM
  mm: remove CONFIG_DISCONTIGMEM
  m68k: remove support for DISCONTIGMEM
  arc: remove support for DISCONTIGMEM
  arc: update comment about HIGHMEM implementation
  alpha: remove DISCONTIGMEM and NUMA
  mm/page_alloc: move free_the_page
  mm/page_alloc: fix counting of managed_pages
  mm/page_alloc: improve memmap_pages dbg msg
  mm: drop SECTION_SHIFT in code comments
  mm/page_alloc: introduce vm.percpu_pagelist_high_fraction
  mm/page_alloc: limit the number of pages on PCP lists when reclaim is active
  mm/page_alloc: scale the number of pages that are batch freed
  ...

7 files changed, 4 insertions, 79 deletions

diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index f4d23977d2a5..29e946394fdb 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -408,10 +408,6 @@ config SINGLE_MEMORY_CHUNK
 	  order" to save memory that could be wasted for unused memory map.
 	  Say N if not sure.
 
-config ARCH_DISCONTIGMEM_ENABLE
-	depends on BROKEN
-	def_bool MMU && !SINGLE_MEMORY_CHUNK
-
 config FORCE_MAX_ZONEORDER
 	int "Maximum zone order" if ADVANCED
 	depends on !SINGLE_MEMORY_CHUNK
@@ -451,11 +447,6 @@ config M68K_L2_CACHE
 	depends on MAC
 	default y
 
-config NODES_SHIFT
-	int
-	default "3"
-	depends on DISCONTIGMEM
-
 config CPU_HAS_NO_BITFIELDS
 	bool
 
@@ -553,4 +544,3 @@ config CACHE_COPYBACK
 	  The ColdFire CPU cache is set into Copy-back mode.
 endchoice
 endif
-
diff --git a/arch/m68k/include/asm/mmzone.h b/arch/m68k/include/asm/mmzone.h
deleted file mode 100644
index 64573fe8e60d..000000000000
--- a/arch/m68k/include/asm/mmzone.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M68K_MMZONE_H_
-#define _ASM_M68K_MMZONE_H_
-
-extern pg_data_t pg_data_map[];
-
-#define NODE_DATA(nid)		(&pg_data_map[nid])
-#define NODE_MEM_MAP(nid)	(NODE_DATA(nid)->node_mem_map)
-
-#endif /* _ASM_M68K_MMZONE_H_ */
diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h
index 97087dd3ca6d..2f1c54e4725d 100644
--- a/arch/m68k/include/asm/page.h
+++ b/arch/m68k/include/asm/page.h
@@ -62,7 +62,7 @@ extern unsigned long _ramend;
 #include <asm/page_no.h>
 #endif
 
-#if !defined(CONFIG_MMU) || defined(CONFIG_DISCONTIGMEM)
+#ifndef CONFIG_MMU
 #define __phys_to_pfn(paddr)	((unsigned long)((paddr) >> PAGE_SHIFT))
 #define __pfn_to_phys(pfn)	PFN_PHYS(pfn)
 #endif
diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 2411ea9ef578..a5b459bcb7d8 100644
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -126,26 +126,6 @@ static inline void *__va(unsigned long x)
 
 extern int m68k_virt_to_node_shift;
 
-#ifndef CONFIG_DISCONTIGMEM
-#define __virt_to_node(addr)	(&pg_data_map[0])
-#else
-extern struct pglist_data *pg_data_table[];
-
-static inline __attribute_const__ int __virt_to_node_shift(void)
-{
-	int shift;
-
-	asm (
-		"1:	moveq	#0,%0\n"
-		m68k_fixup(%c1, 1b)
-		: "=d" (shift)
-		: "i" (m68k_fixup_vnode_shift));
-	return shift;
-}
-
-#define __virt_to_node(addr)	(pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()])
-#endif
-
 #define virt_to_page(addr) ({						\
 	pfn_to_page(virt_to_pfn(addr));					\
 })
@@ -153,23 +133,8 @@ static inline __attribute_const__ int __virt_to_node_shift(void)
 	pfn_to_virt(page_to_pfn(page));					\
 })
 
-#ifdef CONFIG_DISCONTIGMEM
-#define pfn_to_page(pfn) ({						\
-	unsigned long __pfn = (pfn);					\
-	struct pglist_data *pgdat;					\
-	pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn));	\
-	pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn);		\
-})
-#define page_to_pfn(_page) ({						\
-	const struct page *__p = (_page);				\
-	struct pglist_data *pgdat;					\
-	pgdat = &pg_data_map[page_to_nid(__p)];				\
-	((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn;		\
-})
-#else
 #define ARCH_PFN_OFFSET (m68k_memory[0].addr >> PAGE_SHIFT)
 #include <asm-generic/memory_model.h>
-#endif
 
 #define virt_addr_valid(kaddr)	((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
 #define pfn_valid(pfn)		virt_addr_valid(pfn_to_virt(pfn))
diff --git a/arch/m68k/include/asm/tlbflush.h b/arch/m68k/include/asm/tlbflush.h
index 5337bc2c262f..a6318ccd308f 100644
--- a/arch/m68k/include/asm/tlbflush.h
+++ b/arch/m68k/include/asm/tlbflush.h
@@ -263,7 +263,7 @@ static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr
 	BUG();
 }
 
-static inline void flush_tlb_range(struct mm_struct *mm,
+static inline void flush_tlb_range(struct vm_area_struct *vma,
 				   unsigned long start, unsigned long end)
 {
 	BUG();
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index f55bdcb8e4f1..bd0274c7592e 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -402,8 +402,8 @@ sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
 		 * to this process.
 		 */
 		mmap_read_lock(current->mm);
-		vma = find_vma(current->mm, addr);
-		if (!vma || addr < vma->vm_start || addr + len > vma->vm_end)
+		vma = vma_lookup(current->mm, addr);
+		if (!vma || addr + len > vma->vm_end)
 			goto out_unlock;
 	}
 
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index 1759ab875d47..5d749e188246 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -44,28 +44,8 @@ EXPORT_SYMBOL(empty_zero_page);
 
 int m68k_virt_to_node_shift;
 
-#ifdef CONFIG_DISCONTIGMEM
-pg_data_t pg_data_map[MAX_NUMNODES];
-EXPORT_SYMBOL(pg_data_map);
-
-pg_data_t *pg_data_table[65];
-EXPORT_SYMBOL(pg_data_table);
-#endif
-
 void __init m68k_setup_node(int node)
 {
-#ifdef CONFIG_DISCONTIGMEM
-	struct m68k_mem_info *info = m68k_memory + node;
-	int i, end;
-
-	i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift();
-	end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift();
-	for (; i <= end; i++) {
-		if (pg_data_table[i])
-			pr_warn("overlap at %u for chunk %u\n", i, node);
-		pg_data_table[i] = pg_data_map + node;
-	}
-#endif
 	node_set_online(node);
 }