From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C006C43461 for ; Thu, 10 Sep 2020 18:34:26 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1A0A1214F1 for ; Thu, 10 Sep 2020 18:34:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="t24P+wZG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A0A1214F1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8DFAC6E97F; Thu, 10 Sep 2020 18:34:25 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 201526E97F for ; Thu, 10 Sep 2020 18:34:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=9Kn2iFLtjBF2LN/hYtvFQ/WKPU3K2jlU8w46DPT4v9k=; b=t24P+wZGPBULu7P1ekGMrb5y9T +Q1IxPXTncTG4gGwrZhjgf4JJghC8ojB18ezEOesNeo4Xuqjhr0wHwKeYeiTkSWAu/RAssUiItsYh NYU5A8Djhbd24fNw+Oz5dTRDqjbttRVgFEDZVwFxAFDmZKu/vgIL+3rT5W9t2BvdUeUTKwYjFasW4 +6lT8Ru9pPL8wGIiD6mjfygYSG5lYSrgza1ShAHEuy5rL7B422LXHzNcpvSvfiupaPI4Ph8RJyLX6 bUKIAao2SDGexvS6Pn8LYeVeNjsBmywkZEQZuiQhcC54PcAvlH1iO/eZraGUIu0C56F46awFsb6qI jNq1efPg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGRNo-0005Fu-Ho; Thu, 10 Sep 2020 18:33:20 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org Date: Thu, 10 Sep 2020 19:33:12 +0100 Message-Id: <20200910183318.20139-3-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200910183318.20139-1-willy@infradead.org> References: <20200910183318.20139-1-willy@infradead.org> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 2/8] mm: Use find_get_incore_page in memcontrol X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, Huang Ying , Hugh Dickins , linux-kernel@vger.kernel.org, Chris Wilson , William Kucharski , "Matthew Wilcox \(Oracle\)" , Johannes Weiner , cgroups@vger.kernel.org, Andrew Morton , Alexey Dobriyan , Matthew Auld Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The current code does not protect against swapoff of the underlying swap device, so this is a bug fix as well as a worthwhile reduction in code complexity. Signed-off-by: Matthew Wilcox (Oracle) --- mm/memcontrol.c | 24 ++---------------------- 1 file changed, 2 insertions(+), 22 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b807952b4d43..2f02eaee7115 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5539,35 +5539,15 @@ static struct page *mc_handle_swap_pte(struct vm_area_struct *vma, static struct page *mc_handle_file_pte(struct vm_area_struct *vma, unsigned long addr, pte_t ptent, swp_entry_t *entry) { - struct page *page = NULL; - struct address_space *mapping; - pgoff_t pgoff; - if (!vma->vm_file) /* anonymous vma */ return NULL; if (!(mc.flags & MOVE_FILE)) return NULL; - mapping = vma->vm_file->f_mapping; - pgoff = linear_page_index(vma, addr); - /* page is moved even if it's not RSS of this task(page-faulted). */ -#ifdef CONFIG_SWAP /* shmem/tmpfs may report page out on swap: account for that too. */ - if (shmem_mapping(mapping)) { - page = find_get_entry(mapping, pgoff); - if (xa_is_value(page)) { - swp_entry_t swp = radix_to_swp_entry(page); - *entry = swp; - page = find_get_page(swap_address_space(swp), - swp_offset(swp)); - } - } else - page = find_get_page(mapping, pgoff); -#else - page = find_get_page(mapping, pgoff); -#endif - return page; + return find_get_incore_page(vma->vm_file->f_mapping, + linear_page_index(vma, addr)); } /** -- 2.28.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx