Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:

 - a few MM hotfixes

 - kthread, tools, scripts, ntfs and ocfs2

 - some of MM

Subsystems affected by this patch series: kthread, tools, scripts, ntfs,
ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan,
debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore,
sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan).

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits)
  mm: vmscan: consistent update to pgrefill
  mm/vmscan.c: fix typo
  khugepaged: khugepaged_test_exit() check mmget_still_valid()
  khugepaged: retract_page_tables() remember to test exit
  khugepaged: collapse_pte_mapped_thp() protect the pmd lock
  khugepaged: collapse_pte_mapped_thp() flush the right range
  mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
  mm: thp: replace HTTP links with HTTPS ones
  mm/page_alloc: fix memalloc_nocma_{save/restore} APIs
  mm/page_alloc.c: skip setting nodemask when we are in interrupt
  mm/page_alloc: fallbacks at most has 3 elements
  mm/page_alloc: silence a KASAN false positive
  mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask()
  mm/page_alloc.c: simplify pageblock bitmap access
  mm/page_alloc.c: extract the common part in pfn_to_bitidx()
  mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits
  mm/shuffle: remove dynamic reconfiguration
  mm/memory_hotplug: document why shuffle_zone() is relevant
  mm/page_alloc: remove nr_free_pagecache_pages()
  mm: remove vm_total_pages
  ...

diff --cc Documentation/admin-guide/kernel-parameters.txt
Simple merge

diff --cc arch/m68k/mm/mcfmmu.c
Simple merge

diff --cc arch/powerpc/mm/init_32.c
Simple merge

diff --cc arch/powerpc/mm/init_64.c
Simple merge

diff --cc arch/powerpc/mm/mem.c
Simple merge

diff --cc arch/powerpc/mm/numa.c
Simple merge

diff --cc arch/powerpc/mm/ptdump/hashpagetable.c
Simple merge

diff --cc arch/powerpc/mm/ptdump/ptdump.c
Simple merge

diff --cc arch/riscv/mm/init.c
Simple merge

diff --cc arch/s390/kernel/ptrace.c
Simple merge

diff --cc arch/x86/mm/init_64.c
Simple merge

diff --cc drivers/xen/balloon.c
Simple merge

diff --cc drivers/xen/privcmd.c
Simple merge

diff --cc fs/cifs/connect.c
Simple merge

diff --cc fs/cifs/dfs_cache.c
Simple merge

diff --cc fs/cifs/misc.c
Simple merge

diff --cc include/linux/fs.h
Simple merge

diff --cc include/linux/mm.h
Simple merge

diff --cc init/main.c
Simple merge

diff --cc net/core/sock.c
Simple merge