Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936037AbZDCSDe (ORCPT ); Fri, 3 Apr 2009 14:03:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933787AbZDCSDU (ORCPT ); Fri, 3 Apr 2009 14:03:20 -0400 Received: from brick.kernel.dk ([93.163.65.50]:49004 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933603AbZDCSDT (ORCPT ); Fri, 3 Apr 2009 14:03:19 -0400 Date: Fri, 3 Apr 2009 20:03:17 +0200 From: Jens Axboe To: Geert Uytterhoeven Cc: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, cbe-oss-dev@ozlabs.org Subject: Re: [PATCH] ps3vram: Replace mutex by spinlock + list Message-ID: <20090403180317.GB5178@kernel.dk> References: <1238763938-7076-1-git-send-email-Geert.Uytterhoeven@sonycom.com> <1238763938-7076-2-git-send-email-Geert.Uytterhoeven@sonycom.com> <1238763938-7076-3-git-send-email-Geert.Uytterhoeven@sonycom.com> <1238763938-7076-4-git-send-email-Geert.Uytterhoeven@sonycom.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1238763938-7076-4-git-send-email-Geert.Uytterhoeven@sonycom.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 584 Lines: 18 On Fri, Apr 03 2009, Geert Uytterhoeven wrote: > Remove the mutex serializing access to the cache. > Instead, queue up new requests on a list if the driver is busy. > > This improves sequential write performance by ca. 2%. Great, precisely the method I wanted to see there! I've added your three patches, thanks Geert. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/