From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH 19/21] mm: Convert i_mmap_lock and anon_vma->lock to mutexes Date: Mon, 29 Nov 2010 21:50:42 +0100 Message-ID: <1291063842.32004.386.camel@laptop> References: <20101126143843.801484792@chello.nl> <20101126145411.331356698@chello.nl> <20101129120530.67013aeb.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20101129120530.67013aeb.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: Andrea Arcangeli , Avi Kivity , Thomas Gleixner , Rik van Riel , Ingo Molnar , akpm@linux-foundation.org, Linus Torvalds , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Benjamin Herrenschmidt , David Miller , Hugh Dickins , Mel Gorman , Nick Piggin , Paul McKenney , Yanmin Zhang , Stephen Rothwell List-Id: linux-arch.vger.kernel.org On Mon, 2010-11-29 at 12:05 +0900, KAMEZAWA Hiroyuki wrote: > On Fri, 26 Nov 2010 15:39:02 +0100 > Peter Zijlstra wrote: >=20 > > Straight fwd conversion of i_mmap_lock and anon_vma->lock to mutexes. > >=20 > > Signed-off-by: Peter Zijlstra >=20 > No performance influence ? I couldn't find any, if there was anything the error and per-boot deviation was larger. Yanmin also ran this though the intel test/performance farm and didn't find anything significant. -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from casper.infradead.org ([85.118.1.10]:58277 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752194Ab0K2Uuq convert rfc822-to-8bit (ORCPT ); Mon, 29 Nov 2010 15:50:46 -0500 Subject: Re: [PATCH 19/21] mm: Convert i_mmap_lock and anon_vma->lock to mutexes From: Peter Zijlstra In-Reply-To: <20101129120530.67013aeb.kamezawa.hiroyu@jp.fujitsu.com> References: <20101126143843.801484792@chello.nl> <20101126145411.331356698@chello.nl> <20101129120530.67013aeb.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Mon, 29 Nov 2010 21:50:42 +0100 Message-ID: <1291063842.32004.386.camel@laptop> Mime-Version: 1.0 Sender: linux-arch-owner@vger.kernel.org List-ID: To: KAMEZAWA Hiroyuki Cc: Andrea Arcangeli , Avi Kivity , Thomas Gleixner , Rik van Riel , Ingo Molnar , akpm@linux-foundation.org, Linus Torvalds , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Benjamin Herrenschmidt , David Miller , Hugh Dickins , Mel Gorman , Nick Piggin , Paul McKenney , Yanmin Zhang , Stephen Rothwell Message-ID: <20101129205042.rLH6ekZV3NVNJWp-lViaNP70hBIBcCNTiKBL4m_kqbA@z> On Mon, 2010-11-29 at 12:05 +0900, KAMEZAWA Hiroyuki wrote: > On Fri, 26 Nov 2010 15:39:02 +0100 > Peter Zijlstra wrote: > > > Straight fwd conversion of i_mmap_lock and anon_vma->lock to mutexes. > > > > Signed-off-by: Peter Zijlstra > > No performance influence ? I couldn't find any, if there was anything the error and per-boot deviation was larger. Yanmin also ran this though the intel test/performance farm and didn't find anything significant.