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()
  ...

1 files changed, 13 insertions, 26 deletions

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index c36f977b2ccb..698cc740c6b8 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1154,9 +1154,8 @@ phys_addr_t arm_lowmem_limit __initdata = 0;
 
 void __init adjust_lowmem_bounds(void)
 {
-	phys_addr_t memblock_limit = 0;
-	u64 vmalloc_limit;
-	struct memblock_region *reg;
+	phys_addr_t block_start, block_end, memblock_limit = 0;
+	u64 vmalloc_limit, i;
 	phys_addr_t lowmem_limit = 0;
 
 	/*
@@ -1172,26 +1171,18 @@ void __init adjust_lowmem_bounds(void)
 	 * The first usable region must be PMD aligned. Mark its start
 	 * as MEMBLOCK_NOMAP if it isn't
 	 */
-	for_each_memblock(memory, reg) {
-		if (!memblock_is_nomap(reg)) {
-			if (!IS_ALIGNED(reg->base, PMD_SIZE)) {
-				phys_addr_t len;
+	for_each_mem_range(i, &block_start, &block_end) {
+		if (!IS_ALIGNED(block_start, PMD_SIZE)) {
+			phys_addr_t len;
 
-				len = round_up(reg->base, PMD_SIZE) - reg->base;
-				memblock_mark_nomap(reg->base, len);
-			}
-			break;
+			len = round_up(block_start, PMD_SIZE) - block_start;
+			memblock_mark_nomap(block_start, len);
 		}
+		break;
 	}
 
-	for_each_memblock(memory, reg) {
-		phys_addr_t block_start = reg->base;
-		phys_addr_t block_end = reg->base + reg->size;
-
-		if (memblock_is_nomap(reg))
-			continue;
-
-		if (reg->base < vmalloc_limit) {
+	for_each_mem_range(i, &block_start, &block_end) {
+		if (block_start < vmalloc_limit) {
 			if (block_end > lowmem_limit)
 				/*
 				 * Compare as u64 to ensure vmalloc_limit does
@@ -1440,19 +1431,15 @@ static void __init kmap_init(void)
 
 static void __init map_lowmem(void)
 {
-	struct memblock_region *reg;
 	phys_addr_t kernel_x_start = round_down(__pa(KERNEL_START), SECTION_SIZE);
 	phys_addr_t kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
+	phys_addr_t start, end;
+	u64 i;
 
 	/* Map all the lowmem memory banks. */
-	for_each_memblock(memory, reg) {
-		phys_addr_t start = reg->base;
-		phys_addr_t end = start + reg->size;
+	for_each_mem_range(i, &start, &end) {
 		struct map_desc map;
 
-		if (memblock_is_nomap(reg))
-			continue;
-
 		if (end > arm_lowmem_limit)
 			end = arm_lowmem_limit;
 		if (start >= end)