From nobody Mon Dec 15 01:52:00 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1619815092; cv=none; d=zohomail.com; s=zohoarc; b=iJE9MztysHwhFKIxah8YcKkJlmleD9uh3GzAej6kcKb4Wl/FZY0t6wEjMKs2WXA3NopG5/71LOTHht0uR7YLFtpLlIddR2nl0mt8mBM4OextSCuc1j2S2pCHc7JZthDAn4tTa2UzY3DKmeFRx8A/Lvr3yv4RNHNRFXG5wALyqng= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1619815092; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Id:MIME-Version:Message-ID:References:Subject:To; bh=DEq0/bKuKyVdL1JH6Xf7qoLNGy26OvZqXWZScmfZsZ4=; b=DuQqfuN0F5BbIsQT/mefZmVi6aFwaJe00U/+nm66K19RHB6Mpi/+c8X52O5z92/5EoP7G4H0rmIxsmmVCPFrBsKL0vNAKA+mtIGIf1VihWJqWKMg7nvUIWg1OZdVi16RWuCItT9b/MJN4AzNzqOzZEpGGBS0fVQ6/ii7lJO9hnQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 16198150929248.058623366479083; Fri, 30 Apr 2021 13:38:12 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235991AbhD3UjA (ORCPT ); Fri, 30 Apr 2021 16:39:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231325AbhD3Ui6 (ORCPT ); Fri, 30 Apr 2021 16:38:58 -0400 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8269DC06174A for ; Fri, 30 Apr 2021 13:38:09 -0700 (PDT) Received: by mail-wm1-x32a.google.com with SMTP id m5so11725219wmf.1 for ; Fri, 30 Apr 2021 13:38:09 -0700 (PDT) Received: from amanieu-desktop.home ([2a00:23c6:f081:f801:93ef:94e:9f8:1f0]) by smtp.gmail.com with ESMTPSA id r5sm4384239wmh.23.2021.04.30.13.38.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Apr 2021 13:38:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=DEq0/bKuKyVdL1JH6Xf7qoLNGy26OvZqXWZScmfZsZ4=; b=I0VCihY9/Yzgm/gCe6zh6hq4ak+g7rW7WwWNXOZLJwv3HS3q0LwY+uzRRU+GDnGnwU Dfsr9wtVZZqei7Pm45e5k9igK9KbjtsJIspFn5T2ktkjRepnnfZdQQvZArGDh+5HKQXD kuly2T25iQN1F5yHFGu+RFM4tsnKPROSuc5VZin4RzNXdLdRHBSTDl3kDDoHwugOuAPi 0+Y+wzZ5IEnYgFL+Ymzo8OXo+u8oHws3UDy33mRUJgyRLI+MaQkhlrqeeDJM5u1NjXNK UXlJLLFUnEW4jprVbwuej2R6LJd5nimX1Eui0/9A1XVCVB+6q/kmhmk6P8pB/etduWRJ WDZw== 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=DEq0/bKuKyVdL1JH6Xf7qoLNGy26OvZqXWZScmfZsZ4=; b=WiccS/xqaR1kNulSgk1PNB8qNmQHaP6i38MMrL7Q09diALpO1ZD1km3yUwmKb2e5vi 0NDbzfNsR6nugF0Qfms+A998PskcPGg+9YRHE5qNzASKXNLxaB0FDG83W9FUMYv9Kfvx D+Vi2ZSa5/PbeeKlSMwcFKgAXCjpvLfhHmCLj1ufAPRuQKPd5blASyC1LaBIY0AaTg8X 8c0vKMewl5DXRTymEb8uZQbfETqxDl6iJdhgbkxdL/+GZ37Xpy2dQQDsduumtOCQqQ6R u0ktS7tZy5w7cAOmdZ3JC1WfCZRSkkZpR5y+zjqaPFD4wR71o9OrmTAURtlPZ/oRudeM lDNA== X-Gm-Message-State: AOAM533Ejfua+aPlh/LlltR98JnnrmcEnT0r5oFgYilpxTU9lGoTeAzz zHA6QL2H3J/oj8Z+pfcamZU= X-Google-Smtp-Source: ABdhPJwpWgPw/hEcwnrnkgZN1FYmu83wrXI+9Z4H4NQtFJEKT9jTEWCNqWFNvppzg+i5y9ogbxbJHg== X-Received: by 2002:a7b:c156:: with SMTP id z22mr18616237wmi.86.1619815088327; Fri, 30 Apr 2021 13:38:08 -0700 (PDT) From: Amanieu d'Antras Cc: Amanieu d'Antras , Ryan Houdek , Catalin Marinas , Will Deacon , Mark Rutland , Steven Price , Arnd Bergmann , David Laight , Mark Brown , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 2/8] hugetlbfs: Use arch_get_mmap_* macros Date: Fri, 30 Apr 2021 21:37:51 +0100 Message-Id: <20210430203757.47653-1-amanieu@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210430202810.44092-1-amanieu@gmail.com> References: <20210430202810.44092-1-amanieu@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" hugetlb_get_unmapped_area should obey the same arch-specific constraints as mmap when selecting an address. Signed-off-by: Amanieu d'Antras Co-developed-by: Ryan Houdek Signed-off-by: Ryan Houdek --- fs/hugetlbfs/inode.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 701c82c36138..526ccb524329 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -191,6 +191,18 @@ static int hugetlbfs_file_mmap(struct file *file, stru= ct vm_area_struct *vma) */ =20 #ifndef HAVE_ARCH_HUGETLB_UNMAPPED_AREA +#ifndef arch_get_mmap_end +#define arch_get_mmap_end(addr) (TASK_SIZE) +#endif + +#ifndef arch_get_mmap_base +#define arch_get_mmap_base(addr) (current->mm->mmap_base) +#endif + +#ifndef arch_get_mmap_base_topdown +#define arch_get_mmap_base_topdown(addr) (current->mm->mmap_base) +#endif + static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) @@ -200,8 +212,8 @@ hugetlb_get_unmapped_area_bottomup(struct file *file, u= nsigned long addr, =20 info.flags =3D 0; info.length =3D len; - info.low_limit =3D current->mm->mmap_base; - info.high_limit =3D TASK_SIZE; + info.low_limit =3D arch_get_mmap_base(addr); + info.high_limit =3D arch_get_mmap_end(addr); info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); info.align_offset =3D 0; return vm_unmapped_area(&info); @@ -217,7 +229,7 @@ hugetlb_get_unmapped_area_topdown(struct file *file, un= signed long addr, info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; info.length =3D len; info.low_limit =3D max(PAGE_SIZE, mmap_min_addr); - info.high_limit =3D current->mm->mmap_base; + info.high_limit =3D arch_get_mmap_base_topdown(addr); info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); info.align_offset =3D 0; addr =3D vm_unmapped_area(&info); @@ -231,8 +243,8 @@ hugetlb_get_unmapped_area_topdown(struct file *file, un= signed long addr, if (unlikely(offset_in_page(addr))) { VM_BUG_ON(addr !=3D -ENOMEM); info.flags =3D 0; - info.low_limit =3D current->mm->mmap_base; - info.high_limit =3D TASK_SIZE; + info.low_limit =3D arch_get_mmap_base(addr); + info.high_limit =3D arch_get_mmap_end(addr); addr =3D vm_unmapped_area(&info); } =20 --=20 2.31.1