From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E4411287263; Mon, 6 Oct 2025 13:03:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=130.133.4.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759755789; cv=none; b=myVOuaKOjjMaBJxBfwBISseFlVJXj8menTqGFitznmBVUf6dosDZDwfYwJY7NV3esR++PN+AVmXmkjydYrlFHawRBD3nR3GQkvFnr+MAaKtNIVQXIQm5RthB800HnqkIf3eleCFlzuJsN4TVFpqOvMfRgsPYrdpq0zUHKWSpa+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759755789; c=relaxed/simple; bh=5TktbhUkLEsLDT4e1fFFS/V+VMcgDpsIlUMAXftgLB4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=TWjA2L4xH7aySRH2ap9CMUCssqRaCnPIceUI1jajAc5Etyc+z30X3MlVO5pBE+pTNfzocLW15Jr76I9/46Tso2vL8kjo5/PqPlsiDG6UxLpCQBFZT78vdPtmnf6Q3HO0LJq6vs4/Asna5VvJSHX/KneeePuDPmgQ3gtEWPe81Uo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de; spf=pass smtp.mailfrom=zedat.fu-berlin.de; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b=F/m4/Z6j; arc=none smtp.client-ip=130.133.4.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zedat.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b="F/m4/Z6j" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=fu-berlin.de; s=fub01; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:From: Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:In-Reply-To: References; bh=CfHsi8A3J0D9gR3E0PqAq8z3w4edAZkkHh+11SELL1k=; t=1759755787; x=1760360587; b=F/m4/Z6jseX9aF+ZpMKZgfBGjGcODQNzvUQqKbj/D25qBr6B6DpFnZq1IcJBY Rr/7kovlN1GVAjsJaEy+kwLjxeht3s0+pTElMlEwc2mtqK6oatP1bl2Uh0YPtAxLctZ5f069QxFNL fexpTR/BKa5MejatrbrIgiWaGR/BhV/362SdKel6fKXRhNAFMbk8Y4MnivDqtyeVDeECaPihYJH+9 fcWGh2b5Jq9mZ8JbRJ1Bcl3wIyV3wveJ5cXQD7iUyGobzMeQIB8z8jJcUgc5boeWETbGrEtFmfhGT sXLiErEMKVlAf+TKsKah/WyG/lFGN94xzxH/FIS/2remn6E6gg==; Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.98) with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1v5krm-000000003QM-29oT; Mon, 06 Oct 2025 15:03:02 +0200 Received: from p5b13aa34.dip0.t-ipconnect.de ([91.19.170.52] helo=[192.168.178.61]) by inpost2.zedat.fu-berlin.de (Exim 4.98) with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1v5krm-0000000353S-183j; Mon, 06 Oct 2025 15:03:02 +0200 Message-ID: Subject: Re: [PATCH v2] Revert "sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN" From: John Paul Adrian Glaubitz To: Jens Axboe , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andreas Larsson , Anthony Yznaga , Sam James , "David S . Miller" , Michael Karcher , sparclinux@vger.kernel.org Date: Mon, 06 Oct 2025 15:03:01 +0200 In-Reply-To: <4e45e3182c4718cafad1166e9ef8dcca1c301651.camel@physik.fu-berlin.de> References: <20251006100226.4246-2-glaubitz@physik.fu-berlin.de> <4e45e3182c4718cafad1166e9ef8dcca1c301651.camel@physik.fu-berlin.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Original-Sender: glaubitz@physik.fu-berlin.de X-ZEDAT-Hint: PO On Mon, 2025-10-06 at 15:00 +0200, John Paul Adrian Glaubitz wrote: > The problem is that giving up can lead to filesystem corruption which > is problem that was never observed before the change from what I know. >=20 > We have deployed a kernel with the change reverted on several LDOMs that > are seeing heavy use such as cfarm202.cfarm.net and we have seen any syst= em > lock ups or similar. We have not* seen any lock ups, so far with the patch reverted. Sorry. >=20 --=20 .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913