On March 02, 2017 2:39 PM Minchan Kim wrote:
> @@ -1424,7 +1424,8 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
> } else if (!PageSwapBacked(page)) {
> /* dirty MADV_FREE page */
Nit: enrich the comment please.
> set_pte_at(mm, address, pvmw.pte, pteval);
> - ret = SWAP_DIRTY;
> + SetPageSwapBacked(page);
> + ret = SWAP_FAIL;
> page_vma_mapped_walk_done(&pvmw);
> break;
> }
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