svn commit: r324836 - in head/sys: kern sys

[hiren panchasara]

On 10/21/17 at 10:40P, Mateusz Guzik wrote:
> Author: mjg
> Date: Sat Oct 21 22:40:09 2017
> New Revision: 324836
> URL: https://svnweb.freebsd.org/changeset/base/324836
> 
> Log:
>   mtx: implement thread lock fastpath

Hi,
Can you please elaborate this commit-log message a little more? what is
the fastpath here and what scenarios would benefit from this change?

This would help novice like myself. :-)

Cheers,
Hiren
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