From mboxrd@z Thu Jan 1 00:00:00 1970 From: Artem Bityutskiy Subject: Re: [PATCH v2 1/2] jffs2: implement mount option parsing and compression overriding Date: Wed, 19 Oct 2011 17:22:28 +0300 Message-ID: <1319034155.25389.81.camel@sauron> References: <20111016181516.489cbbf9@queued.net> Reply-To: dedekind1@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: David Woodhouse , linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel To: Andres Salomon Return-path: In-Reply-To: <20111016181516.489cbbf9@queued.net> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Sun, 2011-10-16 at 18:15 -0700, Andres Salomon wrote: > Currently jffs2 has compile-time constants (and .config options) > controlling whether or not the various compression/decompression > drivers are built in and enabled. This is fine for embedded > systems, but it clashes with distribution kernels. Distro kernels > tend to turn on everything; this causes OpenFirmware to fall > over, as it understands ZLIB-compressed inodes. Booting a kernel > that has LZO compression enabled, writing to the boot partition, > and then rebooting causes OFW to fail to read the kernel from > the filesystem. This is because LZO compression has priority > when writing new data to jffs2, if LZO is enabled. > > This patch adds mount option parsing, and a single supported > option ("compr=none"). This adds the flexibility of being > able to specify which compressor overrides on a per-superblock > basis. For now, we can simply disable compression; > additional flexibility coming soon. Pushed both to l2-mtd-2.6.git, thanks! -- Best Regards, Artem Bityutskiy