svn commit: r305504 - head/sys/fs/nullfs

[Mateusz Guzik]

On Wed, Sep 07, 2016 at 12:46:44AM +0300, Andriy Gapon wrote:
> On 07/09/2016 00:22, Mateusz Guzik wrote:
> >   nullfs: stop special-casing directories in null_vptocnp
> >   
> >   The previous code was forcing an expensive walk in vop_stdvptocnp,
> >   which was causing performance issues on highly contended zfs.
> 
> In other words, the name cache was always bypassed for directories?
> 

Or whatever the target fs had in store for resolving names.

This particular thing was causing a lot of idle time on my poudriere
tests due to lockmgr contention.

-- 
Mateusz Guzik <mjguzik gmail.com>