mm: set VM_FAULT_WRITE in do_swap_page()

Set the flag if do_swap_page is decowing the page the same way do_wp_page
would too.

Signed-off-by: Andrea Arcangeli <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/memory.c b/mm/memory.c
index 6bc039486e9f5ecd5498fe6c3546b6daf451c95d..1ecca56e0a48cb773f4068d254741d319eda01c7 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2723,6 +2723,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
        if ((flags & FAULT_FLAG_WRITE) && reuse_swap_page(page)) {
                pte = maybe_mkwrite(pte_mkdirty(pte), vma);
                flags &= ~FAULT_FLAG_WRITE;
+               ret |= VM_FAULT_WRITE;
                exclusive = 1;
        }
        flush_icache_page(vma, page);