From patchwork Tue Jun 29 02:39:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12349105 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 09289C11F64 for ; Tue, 29 Jun 2021 02:39:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C8FAA61D08 for ; Tue, 29 Jun 2021 02:39:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C8FAA61D08 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2C98D8D00E8; Mon, 28 Jun 2021 22:39:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2A0308D008F; Mon, 28 Jun 2021 22:39:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 168758D00E8; Mon, 28 Jun 2021 22:39:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0159.hostedemail.com [216.40.44.159]) by kanga.kvack.org (Postfix) with ESMTP id E7A7C8D008F for ; Mon, 28 Jun 2021 22:39:21 -0400 (EDT) Received: from smtpin37.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E715A8249980 for ; Tue, 29 Jun 2021 02:39:21 +0000 (UTC) X-FDA: 78305204922.37.53ECB30 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf09.hostedemail.com (Postfix) with ESMTP id A89836000149 for ; Tue, 29 Jun 2021 02:39:21 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id A840C61D0B; Tue, 29 Jun 2021 02:39:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1624934361; bh=Nae39WXZ+EEI1jygsjTuK+eLFeoTFqO+MVsWkrBJt3A=; h=Date:From:To:Subject:In-Reply-To:From; b=Wrmu5lWAg+3fbr2r5RtFhHEtKi5SD/xgPIHFPrGeG9d3s217QZSVLKksUD31W/zRY U7HggFzIx2qOeksgH2lUNDyc0j4ZCQE1f5a/aKmypL9bqULxK1uwTVipahAO81jDdw iJdk1Ue9WeTTvOG1WfaJLirJnsm9QWbvL1ZkUf2M= Date: Mon, 28 Jun 2021 19:39:20 -0700 From: Andrew Morton To: akpm@linux-foundation.org, david@redhat.com, dbueso@suse.de, geert@linux-m68k.org, ldufour@linux.ibm.com, Liam.Howlett@Oracle.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 115/192] vfio: use vma_lookup() instead of find_vma_intersection() Message-ID: <20210629023920.WXSWCSVZo%akpm@linux-foundation.org> In-Reply-To: <20210628193256.008961950a714730751c1423@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: A89836000149 X-Stat-Signature: ysbe6ksy6odi1yzdr8zjenmqzjchpnrs Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=Wrmu5lWA; dmarc=none; spf=pass (imf09.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-HE-Tag: 1624934361-399885 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Liam Howlett Subject: vfio: use vma_lookup() instead of find_vma_intersection() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-12-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett Reviewed-by: Laurent Dufour Acked-by: David Hildenbrand Acked-by: Davidlohr Bueso Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton --- drivers/vfio/vfio_iommu_type1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/vfio/vfio_iommu_type1.c~vfio-use-vma_lookup-instead-of-find_vma_intersection +++ a/drivers/vfio/vfio_iommu_type1.c @@ -567,7 +567,7 @@ static int vaddr_get_pfns(struct mm_stru vaddr = untagged_addr(vaddr); retry: - vma = find_vma_intersection(mm, vaddr, vaddr + 1); + vma = vma_lookup(mm, vaddr); if (vma && vma->vm_flags & VM_PFNMAP) { ret = follow_fault_pfn(vma, mm, vaddr, pfn, prot & IOMMU_WRITE);