Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:
 "181 patches.

  Subsystems affected by this patch series: kbuild, scripts, ntfs,
  ocfs2, vfs, mm (slab, slub, kmemleak, dax, debug, pagecache, fadvise,
  gup, swap, memremap, memcg, selftests, pagemap, mincore, hmm, dma,
  memory-failure, vmallo and migration)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (181 commits)
  mm/migrate: remove obsolete comment about device public
  mm/migrate: remove cpages-- in migrate_vma_finalize()
  mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
  memblock: use separate iterators for memory and reserved regions
  memblock: implement for_each_reserved_mem_region() using __next_mem_region()
  memblock: remove unused memblock_mem_size()
  x86/setup: simplify reserve_crashkernel()
  x86/setup: simplify initrd relocation and reservation
  arch, drivers: replace for_each_membock() with for_each_mem_range()
  arch, mm: replace for_each_memblock() with for_each_mem_pfn_range()
  memblock: reduce number of parameters in for_each_mem_range()
  memblock: make memblock_debug and related functionality private
  memblock: make for_each_memblock_type() iterator private
  mircoblaze: drop unneeded NUMA and sparsemem initializations
  riscv: drop unneeded node initialization
  h8300, nds32, openrisc: simplify detection of memory extents
  arm64: numa: simplify dummy_numa_init()
  arm, xtensa: simplify initialization of high memory pages
  dma-contiguous: simplify cma_early_percent_memory()
  KVM: PPC: Book3S HV: simplify kvm_cma_reserve()
  ...

Documentation/admin-guide/cgroup-v2.rst

@@ -1259,6 +1259,10 @@ PAGE_SIZE multiple when read back.
 	can show up in the middle. Don't rely on items remaining in a
 	fixed position; use the keys to look up specific values!
 
+	If the entry has no per-node counter(or not show in the
+	mempry.numa_stat). We use 'npn'(non-per-node) as the tag
+	to indicate that it will not show in the mempry.numa_stat.
+
 	  anon
 		Amount of memory used in anonymous mappings such as
 		brk(), sbrk(), and mmap(MAP_ANONYMOUS)
@@ -1270,15 +1274,11 @@ PAGE_SIZE multiple when read back.
 	  kernel_stack
 		Amount of memory allocated to kernel stacks.
 
-	  slab
-		Amount of memory used for storing in-kernel data
-		structures.
-
-	  percpu
+	  percpu(npn)
 		Amount of memory used for storing per-cpu kernel
 		data structures.
 
-	  sock
+	  sock(npn)
 		Amount of memory used in network transmission buffers
 
 	  shmem
@@ -1318,11 +1318,9 @@ PAGE_SIZE multiple when read back.
 		Part of "slab" that cannot be reclaimed on memory
 		pressure.
 
-	  pgfault
-		Total number of page faults incurred
-
-	  pgmajfault
-		Number of major page faults incurred
+	  slab(npn)
+		Amount of memory used for storing in-kernel data
+		structures.
 
 	  workingset_refault_anon
 		Number of refaults of previously evicted anonymous pages.
@@ -1348,37 +1346,68 @@ PAGE_SIZE multiple when read back.
 	  workingset_nodereclaim
 		Number of times a shadow node has been reclaimed
 
-	  pgrefill
+	  pgfault(npn)
+		Total number of page faults incurred
+
+	  pgmajfault(npn)
+		Number of major page faults incurred
+
+	  pgrefill(npn)
 		Amount of scanned pages (in an active LRU list)
 
-	  pgscan
+	  pgscan(npn)
 		Amount of scanned pages (in an inactive LRU list)
 
-	  pgsteal
+	  pgsteal(npn)
 		Amount of reclaimed pages
 
-	  pgactivate
+	  pgactivate(npn)
 		Amount of pages moved to the active LRU list
 
-	  pgdeactivate
+	  pgdeactivate(npn)
 		Amount of pages moved to the inactive LRU list
 
-	  pglazyfree
+	  pglazyfree(npn)
 		Amount of pages postponed to be freed under memory pressure
 
-	  pglazyfreed
+	  pglazyfreed(npn)
 		Amount of reclaimed lazyfree pages
 
-	  thp_fault_alloc
+	  thp_fault_alloc(npn)
 		Number of transparent hugepages which were allocated to satisfy
 		a page fault. This counter is not present when CONFIG_TRANSPARENT_HUGEPAGE
                 is not set.
 
-	  thp_collapse_alloc
+	  thp_collapse_alloc(npn)
 		Number of transparent hugepages which were allocated to allow
 		collapsing an existing range of pages. This counter is not
 		present when CONFIG_TRANSPARENT_HUGEPAGE is not set.
 
+  memory.numa_stat
+	A read-only nested-keyed file which exists on non-root cgroups.
+
+	This breaks down the cgroup's memory footprint into different
+	types of memory, type-specific details, and other information
+	per node on the state of the memory management system.
+
+	This is useful for providing visibility into the NUMA locality
+	information within an memcg since the pages are allowed to be
+	allocated from any physical node. One of the use case is evaluating
+	application performance by combining this information with the
+	application's CPU allocation.
+
+	All memory amounts are in bytes.
+
+	The output format of memory.numa_stat is::
+
+	  type N0=<bytes in node 0> N1=<bytes in node 1> ...
+
+	The entries are ordered to be human readable, and new entries
+	can show up in the middle. Don't rely on items remaining in a
+	fixed position; use the keys to look up specific values!
+
+	The entries can refer to the memory.stat.
+
   memory.swap.current
 	A read-only single value file which exists on non-root
 	cgroups.

Documentation/admin-guide/mm/hugetlbpage.rst

@@ -131,7 +131,7 @@ hugepages
 	parameter is preceded by an invalid hugepagesz parameter, it will
 	be ignored.
 default_hugepagesz
-	pecify the default huge page size.  This parameter can
+	Specify the default huge page size.  This parameter can
 	only be specified once on the command line.  default_hugepagesz can
 	optionally be followed by the hugepages parameter to preallocate a
 	specific number of huge pages of default size.  The number of default