linux-kernel - Re: fs: Limit sys_mount to only request filesystem modules prevents mount -t cifs from working

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Message-ID: <87obeqnjlm.fsf@xmission.com>
Date:	Mon, 11 Mar 2013 06:37:09 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Arthur Marsh <arthur.marsh@...ernode.on.net>
Cc:	Serge Hallyn <serge.hallyn@...onical.com>,
	Kees Cook <keescook@...gle.com>, linux-cifs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: fs: Limit sys_mount to only request filesystem modules prevents mount -t cifs from working

Arthur Marsh <arthur.marsh@...ernode.on.net> writes:

> Hi, I found that Linux kernel 3.9.0-rc2 would not mount a remote cifs
> filesystem, and ran a git bisect which identified the following
> commit:
>
> Is there a patch already present somewhere to fix this problem?
>

Grr.  It was in linux-next for nearly a week and I checked an double
checked that patch.

This should fix it. 

Eric


diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 1a052c0..3cf8a15 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -777,6 +777,7 @@ struct file_system_type cifs_fs_type = {
 	.kill_sb = cifs_kill_sb,
 	/*  .fs_flags */
 };
+MODULE_ALIAS_FS("cifs");
 const struct inode_operations cifs_dir_inode_ops = {
 	.create = cifs_create,
 	.atomic_open = cifs_atomic_open,
--
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