diff options
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h index a43d79335c16..b3f0dd3ffba2 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -412,7 +412,8 @@ void mlock_page(struct page *page); static inline void mlock_vma_page(struct page *page, struct vm_area_struct *vma, bool compound) { - if (unlikely(vma->vm_flags & VM_LOCKED) && + /* VM_IO check prevents migration from double-counting during mlock */ + if (unlikely((vma->vm_flags & (VM_LOCKED|VM_IO)) == VM_LOCKED) && (compound || !PageTransCompound(page))) mlock_page(page); } |