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 <aarcange@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -2723,6 +2723,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
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if ((flags & FAULT_FLAG_WRITE) && reuse_swap_page(page)) {
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if ((flags & FAULT_FLAG_WRITE) && reuse_swap_page(page)) {
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pte = maybe_mkwrite(pte_mkdirty(pte), vma);
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pte = maybe_mkwrite(pte_mkdirty(pte), vma);
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flags &= ~FAULT_FLAG_WRITE;
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flags &= ~FAULT_FLAG_WRITE;
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ret |= VM_FAULT_WRITE;
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exclusive = 1;
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exclusive = 1;
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}
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}
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flush_icache_page(vma, page);
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flush_icache_page(vma, page);
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