From: Stanislav Kinsbursky <skinsbursky@parallels.com>
Date: Fri, 25 Nov 2011 14:13:12 +0000 (+0300)
Subject: NFS: DNS resolver PipeFS notifier introduced
X-Git-Tag: v3.4-rc1~123^2~199
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9df69c81b469780b64f9b26bb87c048613fdeddf;p=pandora-kernel.git

NFS: DNS resolver PipeFS notifier introduced

This patch subscribes DNS resolver caches to RPC pipefs notifications. Notifier
is registering on NFS module load. This notifier callback is responsible for
creation/destruction of PipeFS DNS resolver cache directory.
Note that no locking required in notifier callback because PipeFS superblock
pointer is passed as an argument from it's creation or destruction routine and
thus we can be sure about it's validity.

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