mm: save soft-dirty bits on swapped pages

[deliverable/linux.git] / include / linux / swapops.h

diff --git a/include/linux/swapops.h b/include/linux/swapops.h
index c5fd30d2a415a48964eb1fb2aaaac0db255656e1..8d4fa82bfb913d0021d93c49e71dab940804fdf7 100644 (file)
--- a/include/linux/swapops.h
+++ b/include/linux/swapops.h
@@ -67,6 +67,8 @@ static inline swp_entry_t pte_to_swp_entry(pte_t pte)
        swp_entry_t arch_entry;
 
        BUG_ON(pte_file(pte));
+       if (pte_swp_soft_dirty(pte))
+               pte = pte_swp_clear_soft_dirty(pte);
        arch_entry = __pte_to_swp_entry(pte);
        return swp_entry(__swp_type(arch_entry), __swp_offset(arch_entry));
 }