From patchwork Wed Jan 9 01:28:09 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michel Lespinasse X-Patchwork-Id: 210589 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 9CE172C05D5 for ; Wed, 9 Jan 2013 12:30:25 +1100 (EST) Received: from mail-da0-f52.google.com (mail-da0-f52.google.com [209.85.210.52]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 224992C00B4 for ; Wed, 9 Jan 2013 12:28:32 +1100 (EST) Received: by mail-da0-f52.google.com with SMTP id f10so466961dak.25 for ; Tue, 08 Jan 2013 17:28:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=m8BhLQt09z/FIiDqu8x1NEjL2ZCS/TnXPYNPNj+0qyc=; b=Pbv9DeD/S79iRbegg+D14tCm7krsi5TLsptlLWCqhuGM0o0B0o/eittiwuDsIKQvft BHz21T7x4kWyAUFRlKy4EV1Lme/0X6h63tOB8wIcPYEunIre0om04Qz2RsURCYnHcco7 RbBD3+2FXd5Cvj1n29JDkmsSm334SoEOmZMIdkldQLyDiPOZxG5IyZM1uB9qw9G+oTG9 DzXHdPiqqnuDZKxAiahrBgV+7hKh4sHf0/sBi29A4gN4ufs/AyWbTsAJ2sDzUaisSzgW 4/W3ISojCRAGQMrKrCXA2tx0t9KtNcYxdQKWtk6dfOMH88gpAetXKXGGUbh4/Oa3Kt60 ywpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references:x-gm-message-state; bh=m8BhLQt09z/FIiDqu8x1NEjL2ZCS/TnXPYNPNj+0qyc=; b=cwba/yT153mLDAaa3NcWJpK8xa0PxhjjoCYF10pimKSzMmr1w3LJ+j0FYQ8eDxau3Q 8WQEvk2muqcqxAijfrypMrEMXzeGhnHM7RNPr08YvWHi/qs495O0ZcdonUrW5ebNJVpn EH7jo5Gfd8QolN9E8/BVqAqq1m2zLkkwo8vuXnQ59kwhF1fEUSx6IhluI+dvsY7K9XEw KEKb0RhMNopa7VpklW0SZ+PahiN4E3X6NnWbIvU8bnlB/+d5vqZPI2a7mvCzBat/1/zP dppY27RSLOO70FQoM3/B78GFuUpTXD7MvgzFO+wCZgf9Ay8+ZGtqr7UFPX8UV7I5HJXU xpmw== X-Received: by 10.66.87.202 with SMTP id ba10mr184400937pab.72.1357694910854; Tue, 08 Jan 2013 17:28:30 -0800 (PST) Received: from studio.mtv.corp.google.com (studio.mtv.corp.google.com [172.17.131.106]) by mx.google.com with ESMTPS id p10sm41711168pax.27.2013.01.08.17.28.29 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 08 Jan 2013 17:28:30 -0800 (PST) From: Michel Lespinasse To: Rik van Riel , Benjamin Herrenschmidt , "James E.J. Bottomley" , Matt Turner , David Howells , Tony Luck Subject: [PATCH 2/8] mm: use vm_unmapped_area() on alpha architecture Date: Tue, 8 Jan 2013 17:28:09 -0800 Message-Id: <1357694895-520-3-git-send-email-walken@google.com> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1357694895-520-1-git-send-email-walken@google.com> References: <1357694895-520-1-git-send-email-walken@google.com> X-Gm-Message-State: ALoCoQn1xMCZDFxcPTMfp+dmld7faxZcFuK6ADR7nlvIY8S2kUGz6qjU4qW5xUiL1TL85mfbGp/gQzCLQc4uQzd7mDQUllKl9WER06Cw0GfiGuUEevSPmhIPb4NifihH8IqEfoWztQzX9DcBOj2iRpd6HCLrFv1l+gG2hYKJa1IajjGfWUY1tDGC2wrAl45h48EzM28MC07hl6g5EzrcUU3v46oRX3iH9w== Cc: linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-alpha@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Update the alpha arch_get_unmapped_area function to make use of vm_unmapped_area() instead of implementing a brute force search. Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel Tested-by: Michael Cree --- arch/alpha/kernel/osf_sys.c | 20 +++++++++----------- 1 files changed, 9 insertions(+), 11 deletions(-) diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 14db93e4c8a8..ba707e23ef37 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -1298,17 +1298,15 @@ static unsigned long arch_get_unmapped_area_1(unsigned long addr, unsigned long len, unsigned long limit) { - struct vm_area_struct *vma = find_vma(current->mm, addr); - - while (1) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (limit - len < addr) - return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) - return addr; - addr = vma->vm_end; - vma = vma->vm_next; - } + struct vm_unmapped_area_info info; + + info.flags = 0; + info.length = len; + info.low_limit = addr; + info.high_limit = limit; + info.align_mask = 0; + info.align_offset = 0; + return vm_unmapped_area(&info); } unsigned long