From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from frost.carfax.org.uk ([85.119.82.111]:34283 "EHLO frost.carfax.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751769AbaHDLcd (ORCPT ); Mon, 4 Aug 2014 07:32:33 -0400 Date: Mon, 4 Aug 2014 12:32:31 +0100 From: Hugo Mills To: Clemens Eisserer Cc: linux-btrfs@vger.kernel.org Subject: Re: ENOSPC with mkdir and rename Message-ID: <20140804113231.GD31950@carfax.org.uk> References: <53DEE40C.6020403@cn.fujitsu.com> <17833067.mzxAL4oqZq@quad> <20140804102206.GA31950@carfax.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="EcSFpNr6Vcxykj4g" In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: --EcSFpNr6Vcxykj4g Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Aug 04, 2014 at 01:04:25PM +0200, Clemens Eisserer wrote: > Hi Hugo, > > > On the 3.15+ kernels, the block reserve is split out of metadata > > and reported separately. This helps with the following process: > > Thanks a lot for pointing this out, I hadn't noticed this change until now. > > One thing I didn't find any information about is the overhead > introduced by mixied-mode. > It would be great if you could explain it in a few sentences. I don't know, I'm afraid. I don't think we've got any benchmarks on the scale of the slowdown. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Reading Mein Kampf won't make you a Nazi. Reading Das Kapital --- won't make you a communist. But most trolls started out with a copy of Lord of the Rings. --EcSFpNr6Vcxykj4g Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBU99vT1heFHXiqx3kAQLfExAAqzb7d1hL5OMUvbYlkuxM+UTvp6wQ1+SZ tXSFegrb2iypaYZ6QTA93P5/xg8e6q/T1cmJFKrmpk4nbZYu2iTT3qZxp05cljua z47fs50iX1bLhpJzF9x9UKRa1Mvoh7nkn3+44pXUnMMPJEPYf5muBVckIB6+59HG wAOX7xZOOJZ7014UWGTqk/3bjB+bjJcXI9nWvt+gcNaIJ00hCb+tgQIkHXHr6AXf PnWpYE6eSpUwqNHddmfF3af7IHHVGEIbIjLXKwE2TxWssV7n6FOUNDomdiCK6soE xevqYUtPitQUbPS686XjBYShhM4FNXbuKACC1sJVtGnp76fW7LlULm4HiGXgjDVM aUbvu5Pv8wI73GL3ZvPtHCn/qGoanUPRKKeKcXdAL7TBX2S86TxCxN4TG1U/77Al 36R1UHhPSKQmXwZmY8JKshpOFXtnlT3MD17dtuNxFij44SPXAUeDl2lILf13IU08 7AuFYLIBa9en4SnGk285wSbM3Gkqv2e1FyA7VmB5KN15b6Ca5dsr0kE4+tdy0G33 s85CbHSV4ksV06PMb4vQ+g4EQcksXbdcih9UwDD9rF6Af5W6NtkGGN7zW7mDwQ5e xm4oVqbr6/OBanDs1lPHPoAPTEFPC2LmwIhWzkrRhqOzduCY3bcrBkLPItz0Ix/3 stTjpnxr3J0= =B+Iz -----END PGP SIGNATURE----- --EcSFpNr6Vcxykj4g--