From nobody Mon Feb 9 06:25:39 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 020C5EB64D7 for ; Tue, 13 Jun 2023 21:55:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231950AbjFMVzE (ORCPT ); Tue, 13 Jun 2023 17:55:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231975AbjFMVy7 (ORCPT ); Tue, 13 Jun 2023 17:54:59 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB9A81BDA for ; Tue, 13 Jun 2023 14:54:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686693251; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nVhPI7Qoz7ZqnzsG9+Pwmnk6AKrA3Y9yvdpVEt0mHXM=; b=D5w6/rEXPnNuZccOm0IGyU7DxTPzzNTB1q6pvGDJ8fcJtyGF601vQuZ4DPfrFDTibFN96T kCjSq5AZbf6Mii5yW7x5672VwCVR+orT2u0cND+AWKWJhb2WL2yTvHlN4/8jJnkY3mn3xS pWB6izUF++9ZqIigsmgQOVI95Nk9Cd0= Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-657-um5Iev9jM6-lj1Mt6ltFQQ-1; Tue, 13 Jun 2023 17:54:01 -0400 X-MC-Unique: um5Iev9jM6-lj1Mt6ltFQQ-1 Received: by mail-qt1-f200.google.com with SMTP id d75a77b69052e-3fb2e6ca6eeso2354341cf.1 for ; Tue, 13 Jun 2023 14:54:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686693240; x=1689285240; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nVhPI7Qoz7ZqnzsG9+Pwmnk6AKrA3Y9yvdpVEt0mHXM=; b=C/IkRDqnSdoerU5bi0Fhw1AbXTZ5ueAMOiUk8D8ZNv3dhVhtuWR5g1AjAQjbmMDj5i jg/gR+lPQIE1+vGCGF1dQUaVy2CmAtou+OqS6w9ofZrOeuqMJJwaXEsETcfm2+AYYDrG Hn424eNPQp2rPL2FB/qihlC1/BFz6AONlzCf6F5F/HlPb9errCraPKgGObOGDQnl9xQb W1nUlD/E7dC2Yr+UDkBXLoCZ2IrDiTZFVRtScWfec66OSY6NiDVP/gfJjNt8r2r/JZIC 6LRBkw4YhsNBGtps0IOY3c7SDZNsUG6drsgtNIpInPxn0x/wW1a83dgqA/3ZxNn+MJ0P YnpA== X-Gm-Message-State: AC+VfDxc/5l/M4xt8wpe+gFi3t3jcsGYCbhjznNSNxzX4SdKL3pTt85+ EK2NqOONaMCkwMnA79tLA8pFBHGc0KXkSbALTkkpEIILXe2TvaK6Jl73YhLM5d9eE2GFcLgbZvH 6nUQmZ2r1RTmEjBQEs5DMMfeU6009FBPgMMsbFFno2I1flv9+O7ofaBBcaaswv6jWovDYqQYqK4 NVFeaGbA== X-Received: by 2002:a05:622a:288:b0:3ef:3dc3:4a3e with SMTP id z8-20020a05622a028800b003ef3dc34a3emr17942049qtw.0.1686693239911; Tue, 13 Jun 2023 14:53:59 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4MJSKcPdnj4lChUYnJRMcBfBWV2PeylliGTEYFlrviAqe21ltK55iRSzWqqMvZUCA8so0tsg== X-Received: by 2002:a05:622a:288:b0:3ef:3dc3:4a3e with SMTP id z8-20020a05622a028800b003ef3dc34a3emr17942021qtw.0.1686693239513; Tue, 13 Jun 2023 14:53:59 -0700 (PDT) Received: from x1n.redhat.com (cpe5c7695f3aee0-cm5c7695f3aede.cpe.net.cable.rogers.com. [99.254.144.39]) by smtp.gmail.com with ESMTPSA id fz24-20020a05622a5a9800b003f9bccc3182sm4522330qtb.32.2023.06.13.14.53.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jun 2023 14:53:58 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Matthew Wilcox , Andrea Arcangeli , John Hubbard , Mike Rapoport , David Hildenbrand , Vlastimil Babka , peterx@redhat.com, "Kirill A . Shutemov" , Andrew Morton , Mike Kravetz , James Houghton , Hugh Dickins Subject: [PATCH 4/7] mm/hugetlb: Prepare hugetlb_follow_page_mask() for FOLL_PIN Date: Tue, 13 Jun 2023 17:53:43 -0400 Message-Id: <20230613215346.1022773-5-peterx@redhat.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230613215346.1022773-1-peterx@redhat.com> References: <20230613215346.1022773-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" It's coming, not yet, but soon. Loose the restriction. Signed-off-by: Peter Xu --- mm/hugetlb.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f037eaf9d819..31d8f18bc2e4 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6467,13 +6467,6 @@ struct page *hugetlb_follow_page_mask(struct vm_area= _struct *vma, spinlock_t *ptl; pte_t *pte, entry; =20 - /* - * FOLL_PIN is not supported for follow_page(). Ordinary GUP goes via - * follow_hugetlb_page(). - */ - if (WARN_ON_ONCE(flags & FOLL_PIN)) - return NULL; - hugetlb_vma_lock_read(vma); pte =3D hugetlb_walk(vma, haddr, huge_page_size(h)); if (!pte) --=20 2.40.1