Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - a few hot fixes

 - ocfs2 updates

 - almost all of -mm (slab-generic, slab, slub, kmemleak, kasan,
   cleanups, debug, pagecache, memcg, gup, pagemap, memory-hotplug,
   sparsemem, vmalloc, initialization, z3fold, compaction, mempolicy,
   oom-kill, hugetlb, migration, thp, mmap, madvise, shmem, zswap,
   zsmalloc)

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (132 commits)
  mm/zsmalloc.c: fix a -Wunused-function warning
  zswap: do not map same object twice
  zswap: use movable memory if zpool support allocate movable memory
  zpool: add malloc_support_movable to zpool_driver
  shmem: fix obsolete comment in shmem_getpage_gfp()
  mm/madvise: reduce code duplication in error handling paths
  mm: mmap: increase sockets maximum memory size pgoff for 32bits
  mm/mmap.c: refine find_vma_prev() with rb_last()
  riscv: make mmap allocation top-down by default
  mips: use generic mmap top-down layout and brk randomization
  mips: replace arch specific way to determine 32bit task with generic version
  mips: adjust brk randomization offset to fit generic version
  mips: use STACK_TOP when computing mmap base address
  mips: properly account for stack randomization and stack guard gap
  arm: use generic mmap top-down layout and brk randomization
  arm: use STACK_TOP when computing mmap base address
  arm: properly account for stack randomization and stack guard gap
  arm64, mm: make randomization selected by generic topdown mmap layout
  arm64, mm: move generic mmap layout functions to mm
  arm64: consider stack randomization for mmap base only when necessary
  ...

1 files changed, 9 insertions, 4 deletions

diff --git a/mm/memory.c b/mm/memory.c
index b1dff75640b7..b1ca51a079f2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -518,7 +518,7 @@ static void print_bad_pte(struct vm_area_struct *vma, unsigned long addr,
                  (long long)pte_val(pte), (long long)pmd_val(*pmd));
         if (page)
                 dump_page(page, "bad pte");
-        pr_alert("addr:%p vm_flags:%08lx anon_vma:%p mapping:%p index:%lx\n",
+        pr_alert("addr:%px vm_flags:%08lx anon_vma:%px mapping:%px index:%lx\n",
                  (void *)addr, vma->vm_flags, vma->anon_vma, mapping, index);
         pr_alert("file:%pD fault:%ps mmap:%ps readpage:%ps\n",
                  vma->vm_file,
@@ -1026,6 +1026,9 @@ again:
                 if (pte_none(ptent))
                         continue;
 
+                if (need_resched())
+                        break;
+
                 if (pte_present(ptent)) {
                         struct page *page;
 
@@ -1093,7 +1096,6 @@ again:
                 if (unlikely(details))
                         continue;
 
-                entry = pte_to_swp_entry(ptent);
                 if (!non_swap_entry(entry))
                         rss[MM_SWAPENTS]--;
                 else if (is_migration_entry(entry)) {
@@ -1124,8 +1126,11 @@ again:
         if (force_flush) {
                 force_flush = 0;
                 tlb_flush_mmu(tlb);
-                if (addr != end)
-                        goto again;
+        }
+
+        if (addr != end) {
+                cond_resched();
+                goto again;
         }
 
         return addr;