Sleeping thread held mutex in vm_pageout_oom()

[Ryan Stone]

On Fri, Jan 23, 2015 at 10:24 AM, Ed Maste <emaste at freebsd.org> wrote:
> It does say that the braces "may be" left out though, and I much
> prefer the guideline as you state it.

That works for me.

The WITNESS_WARN() survived a buildworld, so I'll commit that once kib
gets the vm_pageout_oom() fix in