Message-ID: <3C063E6B.5060308@wipro.com>
Date: Thu, 29 Nov 2001 19:25:55 +0530
From: "BALBIR SINGH" <balbir.singh@wipro.com>
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To: Russell King <rmk@arm.linux.org.uk>
CC: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] remove BKL from drivers' release functions
In-Reply-To: <E169EFX-0006TA-00@the-village.bc.nu> <3C057410.3090201@us.ibm.com> <20011128234505.C2561@flint.arm.linux.org.uk>
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Even register_blkdev(), etc hold BKL, without these there will be
a lot of problems, all these need to be taken care of if BKL is
ever replaced.

Just adding what I know,
Balbir  


Russell King wrote:

>On Wed, Nov 28, 2001 at 03:32:32PM -0800, David C. Hansen wrote:
>
>>Nothing, because the BKL is not held for all opens anymore.  In most of 
>>the cases that we addressed, the BKL was in release _only_, not in open 
>>at all.  There were quite a few drivers where we added a spinlock, or 
>>used atomic operations to keep open from racing with release.  
>>
>
>All char and block devs are opened with the BKL held - see chrdev_open in
>fs/devices.c and do_open in fs/block_dev.c
>
>--
>Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
>             http://www.arm.linux.org.uk/personal/aboutme.html
>
>-
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