Re: [PATCH] remove BKL from drivers' release functions

BALBIR SINGH
2001-11-29T14:08:12Z

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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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