linux-kernel - Re: [PATCH 1/2] BKL: Remove BKL from default

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Message-Id: <200911182017.26266.arnd@arndb.de>
Date:	Wed, 18 Nov 2009 20:17:26 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Jamie Lokier <jamie@...reable.org>, Jan Blunck <jblunck@...e.de>,
	linux-fsdevel@...r.kernel.org,
	"Linux-Kernel Mailinglist" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>, jkacur@...hat.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Christoph Hellwig <hch@...radead.org>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 1/2] BKL: Remove BKL from default_llseek()

On Wednesday 18 November 2009, Alan Cox wrote:
> Stuff that looks trivial to salvage and works if you don't pread/write I
> imagine
> 
> drivers/sbus/char/flash.c

It also breaks if you do consecutive read() operations without an lseek
between them, because read() does not update *pos. It should work if you
read the whole thing with a single read() operation though, like
the other drivers you mentioned.

	Arnd <><
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