From patchwork Fri Apr 30 05:58:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12232503 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=-15.7 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,URIBL_BLOCKED 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 B7487C433B4 for ; Fri, 30 Apr 2021 05:58:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7D42261459 for ; Fri, 30 Apr 2021 05:58:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7D42261459 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 2052E940011; Fri, 30 Apr 2021 01:58:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1B1078D000B; Fri, 30 Apr 2021 01:58:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 07C9E940011; Fri, 30 Apr 2021 01:58:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0236.hostedemail.com [216.40.44.236]) by kanga.kvack.org (Postfix) with ESMTP id DD4628D000B for ; Fri, 30 Apr 2021 01:58:57 -0400 (EDT) Received: from smtpin38.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 9D7558248D7C for ; Fri, 30 Apr 2021 05:58:57 +0000 (UTC) X-FDA: 78087979914.38.8B07C75 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf09.hostedemail.com (Postfix) with ESMTP id BA8FA6000112 for ; Fri, 30 Apr 2021 05:58:49 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 55A6B61482; Fri, 30 Apr 2021 05:58:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1619762336; bh=aAmLc48gFEaPXkLdU25LHj1RML1v05ZZGkfJuD3w7gU=; h=Date:From:To:Subject:In-Reply-To:From; b=zefc4ry29ZBldAjMA0LY1350Ry5pLTRvB441l3ZKaLtXentqwH5y1tuL85XBEpRl9 Nvme1YUdeqz5HuDGNM5Jcb0SNKyPZkdLMNxHXBnesKxoumHsGPwew8avxsiUJoeumS 5DBbXVC1K5Mhr2OSn5LqV6fHao1FvdanqIJKKYwc= Date: Thu, 29 Apr 2021 22:58:55 -0700 From: Andrew Morton To: akpm@linux-foundation.org, clg@kaod.org, hch@lst.de, linux-mm@kvack.org, mm-commits@vger.kernel.org, npiggin@gmail.com, torvalds@linux-foundation.org, urezki@gmail.com Subject: [patch 111/178] kernel/dma: remove unnecessary unmap_kernel_range Message-ID: <20210430055855.0q2vqIi8N%akpm@linux-foundation.org> In-Reply-To: <20210429225251.02b6386d21b69255b4f6c163@linux-foundation.org> User-Agent: s-nail v14.8.16 MIME-Version: 1.0 Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=zefc4ry2; 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-Rspamd-Server: rspam03 X-Stat-Signature: 84xp9fuu3becr75sb5df5ydjwxio6snc X-Rspamd-Queue-Id: BA8FA6000112 Received-SPF: none (linux-foundation.org>: No applicable sender policy available) receiver=imf09; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1619762329-639203 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: Nicholas Piggin Subject: kernel/dma: remove unnecessary unmap_kernel_range vunmap will remove ptes. Link: https://lkml.kernel.org/r/20210322021806.892164-3-npiggin@gmail.com Signed-off-by: Nicholas Piggin Reviewed-by: Christoph Hellwig Cc: Cédric Le Goater Cc: Uladzislau Rezki Signed-off-by: Andrew Morton --- kernel/dma/remap.c | 1 - 1 file changed, 1 deletion(-) --- a/kernel/dma/remap.c~kernel-dma-remove-unnecessary-unmap_kernel_range +++ a/kernel/dma/remap.c @@ -66,6 +66,5 @@ void dma_common_free_remap(void *cpu_add return; } - unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size)); vunmap(cpu_addr); }