From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f44.google.com (mail-yh0-f44.google.com [209.85.213.44]) by kanga.kvack.org (Postfix) with ESMTP id 3CA2A6B0071 for ; Mon, 8 Jun 2015 11:42:57 -0400 (EDT) Received: by yhpn97 with SMTP id n97so41644232yhp.0 for ; Mon, 08 Jun 2015 08:42:56 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id n63si1353471yka.21.2015.06.08.08.42.56 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Jun 2015 08:42:56 -0700 (PDT) Message-ID: <5575B7F6.6090000@redhat.com> Date: Mon, 08 Jun 2015 11:42:46 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH] mm/mmap.c: optimization of do_mmap_pgoff function References: <1433584472-19151-1-git-send-email-kwapulinski.piotr@gmail.com> In-Reply-To: <1433584472-19151-1-git-send-email-kwapulinski.piotr@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Piotr Kwapulinski , akpm@linux-foundation.org Cc: kirill.shutemov@linux.intel.com, mhocko@suse.cz, sasha.levin@oracle.com, dave@stgolabs.net, koct9i@gmail.com, pfeiner@google.com, dh.herrmann@gmail.com, vishnu.ps@samsung.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org On 06/06/2015 05:54 AM, Piotr Kwapulinski wrote: > The simple check for zero length memory mapping may be performed > earlier. It causes that in case of zero length memory mapping some > unnecessary code is not executed at all. It does not make the code less > readable and saves some CPU cycles. > > Signed-off-by: Piotr Kwapulinski Acked-by: Rik van Riel -- All rights reversed -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org