From: Stanislav Kinsbursky <skinsbursky@parallels.com>
Date: Tue, 25 Oct 2011 11:16:36 +0000 (+0300)
Subject: SUNRPC: introduce helpers for reference counted rpcbind clients
X-Git-Tag: v3.2-rc1~52^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=914edb1bb2abe2ae4775368f2ffb7f41010fb81e;p=pandora-kernel.git

SUNRPC: introduce helpers for reference counted rpcbind clients

v6:
1) added write memory barrier to rpcb_set_local to make sure, that rpcbind
clients become valid before rpcb_users assignment
2) explicitly set rpcb_users to 1 instead of incrementing it (looks clearer from
my pow).

v5: fixed races with rpcb_users in rpcb_get_local()

This helpers will be used for dynamical creation and destruction of rpcbind
clients.
Variable rpcb_users is actually a counter of lauched RPC services. If rpcbind
clients has been created already, then we just increase rpcb_users.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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