svn commit: r236317 - in head/sys: conf kern sys

[Konstantin Belousov]

On Wed, May 30, 2012 at 04:06:38PM +0000, Konstantin Belousov wrote:
> Author: kib
> Date: Wed May 30 16:06:38 2012
> New Revision: 236317
> URL: http://svn.freebsd.org/changeset/base/236317
> 
> Log:
>   Add a rangelock implementation, intended to be used to range-locking
>   the i/o regions of the vnode data space. The implementation is quite
>   simple-minded, it uses the list of the lock requests, ordered by
>   arrival time. Each request may be for read or for write. The
>   implementation is fair FIFO.
>   
>   MFC after:     2 month

Reviewed by:	attilio, bf (comments), mdf, pjd
Tested by:	pho, flo, Gustau P?rez <gperez entel upc edu>

I am sorry.
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