From patchwork Tue Dec 22 14:52:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yongji Xie X-Patchwork-Id: 11986823 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 5AC00C433E0 for ; Tue, 22 Dec 2020 14:54:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F1BC229C6 for ; Tue, 22 Dec 2020 14:54:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727655AbgLVOxw (ORCPT ); Tue, 22 Dec 2020 09:53:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727633AbgLVOxw (ORCPT ); Tue, 22 Dec 2020 09:53:52 -0500 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B67B8C0617A6 for ; Tue, 22 Dec 2020 06:53:11 -0800 (PST) Received: by mail-pg1-x531.google.com with SMTP id z21so8499624pgj.4 for ; Tue, 22 Dec 2020 06:53:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=VuS4MFGKOQ6wZmoJNuNdlFGLh2OpeJDnVRbM2jvzhBQ=; b=m4BAjxY/bQAuznhNdZPDHhxtD84Rnr52bsUNHZeWViOotIiiTQcYTFBGdhnZndjKLk OHw+OvpgKjX75tPYqSWtJWfbTAWdQQ/+lPFV0tb2pxQHf18C1jEL2rmD3GJOTJNJYw/r DfCFn95QHf56eVVAIb+nAOSxLi3jNYzogNHRvfiVvQJEPMO7nwk2+TZIV7gEvKeGxPHN 0WWGOplq7NJVzbKmLM2RQs5OLK/X4a5JNAuoZ3Y9vW7v8dFfOxRwVQJzFHrg/vSKPVPa J3jnFdGx9AEYV1P1K+DxYo5Z2ZC7lJV5eYuCYuifIINKBww+dPW6mJzHxgD1lPM9W7c7 lC+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VuS4MFGKOQ6wZmoJNuNdlFGLh2OpeJDnVRbM2jvzhBQ=; b=ndWIc4qwI47bTVLETbkPwScSmYTD275YCWdA4cgyfv+daThNfySBOdOKiqIT4GWY+e KCCN7b9Lmjef6uBInon4jTldxpsesQRd4ScXHOWrDBRnY1c/vccQbEO6s6x6yf6Gsaui AgoOzjt1fdVJI0TCt9YF4aiDJs4VMqNORSSKTJqwCgJfbSyLnu+1b06ol3jZkEmDA6p/ 5/6WGxNfv6j4QlKOsJKJ76VYwEht/Vcai4NhsQGrh9gsffxP90fD5YQfP6cg6Ff6hnSa yx6xYFiSlzfD7Is1uYNb7dorcJFtwMrEWVl9AeFfyfH3MUQFWeF1GQnKfmpUEy5pBd4U /JWQ== X-Gm-Message-State: AOAM5304doGXWAOPGZJQ8UyMvr5dAx2t1EFE6Us8q1zCy+Fdy13jVbX9 QhWcilw1AqKl2prE9dsPCDev X-Google-Smtp-Source: ABdhPJwd0YzlNwNtksNu/va7c2CbgxXpbU4AvnZQJsZ90ddeykZ7FJJwEJpyVaPIxgF6wF8TuDIQsg== X-Received: by 2002:a63:2406:: with SMTP id k6mr20214091pgk.453.1608648791343; Tue, 22 Dec 2020 06:53:11 -0800 (PST) Received: from localhost ([139.177.225.248]) by smtp.gmail.com with ESMTPSA id w63sm20402234pfc.20.2020.12.22.06.53.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Dec 2020 06:53:10 -0800 (PST) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, akpm@linux-foundation.org, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC v2 01/13] mm: export zap_page_range() for driver use Date: Tue, 22 Dec 2020 22:52:09 +0800 Message-Id: <20201222145221.711-2-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201222145221.711-1-xieyongji@bytedance.com> References: <20201222145221.711-1-xieyongji@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Export zap_page_range() for use in VDUSE. Signed-off-by: Xie Yongji --- mm/memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory.c b/mm/memory.c index 7d608765932b..edd2d6497bb3 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1542,6 +1542,7 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start, mmu_notifier_invalidate_range_end(&range); tlb_finish_mmu(&tlb, start, range.end); } +EXPORT_SYMBOL(zap_page_range); /** * zap_page_range_single - remove user pages in a given range