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Message-ID: <20170912060456.GA703@jagdpanzerIV.localdomain>
Date:   Tue, 12 Sep 2017 15:04:56 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Minchan Kim <minchan@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-team <kernel-team@....com>,
        Ilya Dryomov <idryomov@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Hugh Dickins <hughd@...gle.com>
Subject: Re: [PATCH 5/5] mm:swap: skip swapcache for swapin of synchronous
 device

On (09/12/17 11:37), Minchan Kim wrote:
> +		} else {
> +			/* skip swapcache */
> +			page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, vmf->address);

what if alloc_page_vma() fails?

> +			__SetPageLocked(page);
> +			__SetPageSwapBacked(page);
> +			set_page_private(page, entry.val);
> +			lru_cache_add_anon(page);
> +			swap_readpage(page, true);
> +		}

	-ss

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