linux-kernel - Re: [PATCH] sony_pi: Remove the BKL from sonypi_misc

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Date:	Thu, 22 Oct 2009 00:27:59 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	John Kacur <jkacur@...hat.com>
Cc:	Arnd Bergmann <arndbergmann@...glemail.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] sony_pi: Remove the BKL from sonypi_misc_open

On Thu, Oct 22, 2009 at 12:06:32AM +0200, John Kacur wrote:
> Okay, I'm sure there is something wrong in this methodology, but it's late 
> at night. At least for a ballpark figure, hopefully it's right.
> 
> Files that mentions "file_operations" - 
> Files that mention "file_operations" and mention "llseek"
> = 1172 - 596 = 572 (in my particular git repo)
> 
> So, over 550 files that need to be set to no_llseek, locked_llseek, or 
> unlocked_llseek. Yikes!
> 
> [jkacur@...ho rt.linux.git]$ git-grep -l file_operations | grep -v 
> Documentation | wc -l
> 1172
> [jkacur@...ho rt.linux.git]$ git-grep -l llseek $(git-grep -l 
> file_operations | grep -v Documentation) | wc -l
> 596
> 


So much?

Ok, a default_lseek pushdown patch wouldn't be accepted :)

Well, I guess we first need to fix the sites that explicitly use the
bkl, one by one, and after that probably propose a new locked version but
without the bkl...

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