linux-kernel - Re: [Patch 06/18] fs/logfs/compr.c

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Message-Id: <200706032358.44870.arnd@arndb.de>
Date:	Sun, 3 Jun 2007 23:58:43 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jörn Engel <joern@...ybastard.org>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mtd@...ts.infradead.org, akpm@...l.org,
	Sam Ravnborg <sam@...nborg.org>,
	John Stoffel <john@...ffel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Jamie Lokier <jamie@...reable.org>,
	Artem Bityutskiy <dedekind@...radead.org>,
	CaT <cat@....com.au>, Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	David Weinehall <tao@....umu.se>, Willy Tarreau <w@....eu>,
	Kyle Moffett <mrmacman_g4@....com>,
	Dongjun Shin <djshin90@...il.com>, Pavel Machek <pavel@....cz>,
	Bill Davidsen <davidsen@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Albert Cahalan <acahalan@...il.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Roland Dreier <rdreier@...co.com>,
	Ondrej Zajicek <santiago@...reenet.org>,
	Ulisses Furquim <ulissesf@...il.com>
Subject: Re: [Patch 06/18] fs/logfs/compr.c

On Sunday 03 June 2007, Jörn Engel wrote:
> +#define COMPR_LEVEL 3
> +
> +static DEFINE_MUTEX(compr_mutex);
> +static struct z_stream_s stream;

Is there a particular reason to choose '3' as the only compression
level? Should this perhaps be a per-superblock option instead?

Also, I thought I saw discussion about making the mutex and
stream per-superblock, but don't remember if the idea was discarded.
If it was, you might want to add it to the won't-happen list.

	Arnd <>< 
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