From: Tejun Heo <tj@kernel.org>
Date: Wed, 24 Sep 2008 21:22:23 +0000 (-0500)
Subject: 9p: implement proper trans module refcounting and unregistration
X-Git-Tag: v2.6.27-rc8~25^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72029fe85d8d060b3f966f2dbc36b3c75b5a6532;p=pandora-kernel.git

9p: implement proper trans module refcounting and unregistration

9p trans modules aren't refcounted nor were they unregistered
properly.  Fix it.

* Add 9p_trans_module->owner and reference the module on each trans
  instance creation and put it on destruction.

* Protect v9fs_trans_list with a spinlock.  This isn't strictly
  necessary as the list is manipulated only during module loading /
  unloading but it's a good idea to make the API safe.

* Unregister trans modules when the corresponding module is being
  unloaded.

* While at it, kill unnecessary EXPORT_SYMBOL on p9_trans_fd_init().

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
---

Reading git-diff-tree failed