git: kernel - More readdirplus deadlock avoidance work

[Thomas Nikolajsen]

>commit 668b43c50042037f92a5b34aac99c0c8d6b8dee1
>Author: Matthew Dillon <dillon at apollo.backplane.com>
>Date:   Sat Feb 13 09:23:33 2010 -0800
. .
>  Attempts to order the locks have failed so now we just use a
>  non-blocking approach since the readdirplus entries are all
>  advisory anyway.
. .
>http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/668b43c50042037f92a5b34aac99c0c8d6b8dee1
>diff --git a/sys/vfs/nfs/nfs_vnops.c b/sys/vfs/nfs/nfs_vnops.c
. .
>+rdfail:
>                                    kprintf("Warning: NFS/rddirplus, "
>                                             "UNABLE TO ENTER %*.*s\n",

Could we disable this warning or hide it behind bootverbose or the like,
it is is a bit annoying; shows up when NFS is stressed at bit
(e.g. when local git repo is used over NFS).

 -thomas