From owner-freebsd-usb@FreeBSD.ORG Sun Aug 24 04:57:16 2008 Return-Path: Delivered-To: usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1264E1065674; Sun, 24 Aug 2008 04:57:16 +0000 (UTC) (envelope-from fbsd-current@mawer.org) Received: from outbound.icp-qv1-irony-out2.iinet.net.au (outbound.icp-qv1-irony-out2.iinet.net.au [203.59.1.107]) by mx1.freebsd.org (Postfix) with ESMTP id 173438FC0A; Sun, 24 Aug 2008 04:57:14 +0000 (UTC) (envelope-from fbsd-current@mawer.org) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AjABANSGsEh8qk4q/2dsb2JhbAAIs06Bag X-IronPort-AV: E=Sophos;i="4.32,261,1217779200"; d="scan'208";a="357987134" Received: from unknown (HELO [10.4.1.1]) ([124.170.78.42]) by outbound.icp-qv1-irony-out2.iinet.net.au with ESMTP; 24 Aug 2008 12:57:23 +0800 Message-ID: <48B0EA50.2090105@mawer.org> Date: Sun, 24 Aug 2008 14:57:52 +1000 From: Antony Mawer User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: Volker References: <20080819211814.6CD685B4D@mail.bitblocks.com> <20080819.160510.104119134.imp@bsdimp.com> <48AB566B.5010507@mawer.org> <20080819.180450.-867152686.imp@bsdimp.com> <48ABB1FA.5070609@mawer.org> <48AFE196.7050100@vwsoft.com> In-Reply-To: <48AFE196.7050100@vwsoft.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: usb@freebsd.org, freebsd-usb@freebsd.org, current@freebsd.org Subject: Re: HEADSUP new usb code coming in. X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Aug 2008 04:57:16 -0000 On 23/08/2008 8:08 PM, Volker wrote: > On 12/23/-58 20:59, Antony Mawer wrote: >> M. Warner Losh wrote: >>> In message: <48AB566B.5010507@mawer.org> >>> Antony Mawer writes: >>> : Warner Losh wrote: >>> : > From: Bakul Shah >>> : > Subject: Re: HEADSUP new usb code coming in. : > Date: Tue, 19 Aug >>> 2008 14:18:13 -0700 >>> : > : >> On Tue, 19 Aug 2008 22:44:20 +0200 Hans Petter Selasky >>> wrote: >>> : >>> New stuff (all of which I can remember right now): >>> : >> ... >>> : >> >>> : >> Accidentally unplugging a mounted USB disk (without >>> : >> unmounting it) resulted in a hang or a crash. Is this fixed? >>> : > : > That's fixed in -current right now with the old stack. It >>> isn't a usb >>> : > issue at all, but a buffer cache issue. >>> : : Is this change that is likely to be MFC'd in time for 7.1? And/or >>> is : there a specific patch that can manually be applied to -STABLE to >>> fix this? >>> >>> I should spend the time to dig into the changes in current. There >>> turned out to be several little changes... And I need to verify all >>> the edge cases were covered... >> I'd be happy to test patches if you do end up doing this.. it would be >> really nice to have in 7.1, or at least available as a patchset if it >> isn't suitable for MFC (eg. ABI changes)... > > I'm a bit behind with reading emails. Please forgive me if this has > already been answered. > > Don't expect the new USB stack for 7.1-R. It's too short and the new USB > stack will introduce an ABI breakage. For that, all drivers written for > the old USB stack need to be rewritten and I guess, we need to take care > about 3rd party developers and inform them in advance about that massive > change. I would not wonder if this will never get MFC'd but I don't know > actually. This wasn't about the new USB stack -- we were discussing the buffer cache and CAM-related fixes that prevents the system from panic'ing when a USB device is unplugged without first unmounting the filesystem. These patches are in HEAD with the existing USB stack. :-) --Antony