From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753907AbZEOLL6 (ORCPT ); Fri, 15 May 2009 07:11:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751203AbZEOLLs (ORCPT ); Fri, 15 May 2009 07:11:48 -0400 Received: from mailout1.w1.samsung.com ([210.118.77.11]:57740 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750944AbZEOLLs (ORCPT ); Fri, 15 May 2009 07:11:48 -0400 Date: Fri, 15 May 2009 13:11:44 +0200 From: =?utf-8?B?TWljaGHFgiBOYXphcmV3aWN6?= Subject: Re: [PATCH] Physical Memory Management [0/1] In-reply-to: <1242385414.26820.55.camel@twins> To: Peter Zijlstra Cc: Andi Kleen , Andrew Morton , linux-kernel@vger.kernel.org, m.szyprowski@samsung.com, kyungmin.park@samsung.com, linux-mm@kvack.org Message-id: Organization: Samsung Electronics MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8BIT User-Agent: Opera Mail/10.00 (Win32) References: <20090513151142.5d166b92.akpm@linux-foundation.org> <1242300002.6642.1091.camel@laptop> <1242302702.6642.1140.camel@laptop> <20090514100718.d8c20b64.akpm@linux-foundation.org> <1242321000.6642.1456.camel@laptop> <20090515101811.GC16682@one.firstfloor.org> <1242385414.26820.55.camel@twins> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Fri, 2009-05-15 at 12:47 +0200, Michał Nazarewicz wrote: >> I cannot create a huge page SysV shared memory segment >> with pages of specified size, can I? On Fri, 15 May 2009 13:03:34 +0200, Peter Zijlstra wrote: > Well, hugetlbfs is a fs, so you can simply create a file on there and > map that shared -- much saner interface than sysvshm if you ask me. It's not a question of being sane or not, it's a question of whether X server supports it and it doesn't. X can read data from Sys V shm to avoid needles copying (or sending via unix socket or whatever) pixmaps (or whatever) and so PMM lets it read from continuous blocks without knowing or carying about it. -- Best regards, _ _ .o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał "mina86" Nazarewicz (o o) ooo +---ooO--(_)--Ooo--