linux-kernel - Re: [PATCH] UBI: new module ubiblk: block layer on top of UBI

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Message-ID: <20110726123453.GA18513@infradead.org>
Date:	Tue, 26 Jul 2011 08:34:53 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	David Wagner <david.wagner@...e-electrons.com>
Cc:	linux-mtd@...ts.infradead.org, dedekind1@...il.com,
	dwmw2@...radead.org, linux-kernel@...r.kernel.org,
	linux-embedded@...r.kernel.org, tim.bird@...sony.com
Subject: Re: [PATCH] UBI: new module ubiblk: block layer on top of UBI

> TODO:
>  * the modules keeps a table of the devices which length is the maximum number
>    of UBI volumes.  It should make use of a linked list.

A linked list isn't very nice either.  Try using idr, which gives you
both an allocator for the minor number space, and a way to look up
the structure by that index.

> Advantages of ubiblk over gluebi+mtdblock_ro:

This section should be in the main commit log, and not that part with
the changelog which gets dropped.

> +int major;

Please don't use global variables with generic names.  In this case you
should neither make it global nor give it a generic name.

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