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Date: Thu, 02 Mar 2017 15:34:45 +0800 From: "Hillf Danton" <hillf.zj@...baba-inc.com> To: "'Minchan Kim'" <minchan@...nel.org>, "'Andrew Morton'" <akpm@...ux-foundation.org> Cc: <kernel-team@....com>, <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>, "'Johannes Weiner'" <hannes@...xchg.org>, "'Michal Hocko'" <mhocko@...e.com>, "'Shaohua Li'" <shli@...nel.org> Subject: Re: [RFC 03/11] mm: remove SWAP_DIRTY in ttu 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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