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, 6 insertions, 6 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 0f7fd4a85db6..30ce722c23fa 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -609,7 +609,7 @@ static int shmem_add_to_page_cache(struct page *page,
 {
         XA_STATE_ORDER(xas, &mapping->i_pages, index, compound_order(page));
         unsigned long i = 0;
-        unsigned long nr = 1UL << compound_order(page);
+        unsigned long nr = compound_nr(page);
 
         VM_BUG_ON_PAGE(PageTail(page), page);
         VM_BUG_ON_PAGE(index != round_down(index, nr), page);
@@ -631,7 +631,7 @@ static int shmem_add_to_page_cache(struct page *page,
                 if (xas_error(&xas))
                         goto unlock;
 next:
-                xas_store(&xas, page + i);
+                xas_store(&xas, page);
                 if (++i < nr) {
                         xas_next(&xas);
                         goto next;
@@ -1734,7 +1734,7 @@ unlock:
  * vm. If we swap it in we mark it dirty since we also free the swap
  * entry since a page cannot live in both the swap and page cache.
  *
- * fault_mm and fault_type are only supplied by shmem_fault:
+ * vmf and fault_type are only supplied by shmem_fault:
  * otherwise they are NULL.
  */
 static int shmem_getpage_gfp(struct inode *inode, pgoff_t index,
@@ -1884,7 +1884,7 @@ alloc_nohuge:
         lru_cache_add_anon(page);
 
         spin_lock_irq(&info->lock);
-        info->alloced += 1 << compound_order(page);
+        info->alloced += compound_nr(page);
         inode->i_blocks += BLOCKS_PER_PAGE << compound_order(page);
         shmem_recalc_inode(inode);
         spin_unlock_irq(&info->lock);
@@ -1925,7 +1925,7 @@ clear:
                 struct page *head = compound_head(page);
                 int i;
 
-                for (i = 0; i < (1 << compound_order(head)); i++) {
+                for (i = 0; i < compound_nr(head); i++) {
                         clear_highpage(head + i);
                         flush_dcache_page(head + i);
                 }
@@ -1952,7 +1952,7 @@ clear:
          * Error recovery.
          */
 unacct:
-        shmem_inode_unacct_blocks(inode, 1 << compound_order(page));
+        shmem_inode_unacct_blocks(inode, compound_nr(page));
 
         if (PageTransHuge(page)) {
                 unlock_page(page);