Merge branch 'akpm' (incoming from Andrew Morton)

Merge misc fixes from Andrew Morton:
 "21 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits)
  mm/balloon_compaction: fix deflation when compaction is disabled
  sh: fix sh770x SCIF memory regions
  zram: avoid NULL pointer access in concurrent situation
  mm/slab_common: don't check for duplicate cache names
  ocfs2: fix d_splice_alias() return code checking
  mm: rmap: split out page_remove_file_rmap()
  mm: memcontrol: fix missed end-writeback page accounting
  mm: page-writeback: inline account_page_dirtied() into single caller
  lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}()
  drivers/rtc/rtc-bq32k.c: fix register value
  memory-hotplug: clear pgdat which is allocated by bootmem in try_offline_node()
  drivers/rtc/rtc-s3c.c: fix initialization failure without rtc source clock
  kernel/kmod: fix use-after-free of the sub_info structure
  drivers/rtc/rtc-pm8xxx.c: rework to support pm8941 rtc
  mm, thp: fix collapsing of hugepages on madvise
  drivers: of: add return value to of_reserved_mem_device_init()
  mm: free compound page with correct order
  gcov: add ARM64 to GCOV_PROFILE_ALL
  fsnotify: next_i is freed during fsnotify_unmount_inodes.
  mm/compaction.c: avoid premature range skip in isolate_migratepages_range
  ...

1 files changed, 8 insertions, 7 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 74c78aa8bc2f..de984159cf0b 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -200,7 +200,7 @@ retry:
         preempt_disable();
         if (cmpxchg(&huge_zero_page, NULL, zero_page)) {
                 preempt_enable();
-                __free_page(zero_page);
+                __free_pages(zero_page, compound_order(zero_page));
                 goto retry;
         }
 
@@ -232,7 +232,7 @@ static unsigned long shrink_huge_zero_page_scan(struct shrinker *shrink,
         if (atomic_cmpxchg(&huge_zero_refcount, 1, 0) == 1) {
                 struct page *zero_page = xchg(&huge_zero_page, NULL);
                 BUG_ON(zero_page == NULL);
-                __free_page(zero_page);
+                __free_pages(zero_page, compound_order(zero_page));
                 return HPAGE_PMD_NR;
         }
 
@@ -803,7 +803,7 @@ int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
                 return VM_FAULT_FALLBACK;
         if (unlikely(anon_vma_prepare(vma)))
                 return VM_FAULT_OOM;
-        if (unlikely(khugepaged_enter(vma)))
+        if (unlikely(khugepaged_enter(vma, vma->vm_flags)))
                 return VM_FAULT_OOM;
         if (!(flags & FAULT_FLAG_WRITE) &&
                         transparent_hugepage_use_zero_page()) {
@@ -1970,7 +1970,7 @@ int hugepage_madvise(struct vm_area_struct *vma,
                  * register it here without waiting a page fault that
                  * may not happen any time soon.
                  */
-                if (unlikely(khugepaged_enter_vma_merge(vma)))
+                if (unlikely(khugepaged_enter_vma_merge(vma, *vm_flags)))
                         return -ENOMEM;
                 break;
         case MADV_NOHUGEPAGE:
@@ -2071,7 +2071,8 @@ int __khugepaged_enter(struct mm_struct *mm)
         return 0;
 }
 
-int khugepaged_enter_vma_merge(struct vm_area_struct *vma)
+int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
+                               unsigned long vm_flags)
 {
         unsigned long hstart, hend;
         if (!vma->anon_vma)
@@ -2083,11 +2084,11 @@ int khugepaged_enter_vma_merge(struct vm_area_struct *vma)
         if (vma->vm_ops)
                 /* khugepaged not yet working on file or special mappings */
                 return 0;
-        VM_BUG_ON_VMA(vma->vm_flags & VM_NO_THP, vma);
+        VM_BUG_ON_VMA(vm_flags & VM_NO_THP, vma);
         hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK;
         hend = vma->vm_end & HPAGE_PMD_MASK;
         if (hstart < hend)
-                return khugepaged_enter(vma);
+                return khugepaged_enter(vma, vm_flags);
         return 0;
 }