From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cyrill Gorcunov <gorcunov@gmail.com>
Subject: [PATCH resend] vfs: Add ->statfs callback for pipefs
Date: Wed, 24 Aug 2011 12:09:24 +0400
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Cc: James Bottomley <jbottomley@parallels.com>,
	Tejun Heo <tj@kernel.org>,
	Glauber Costa <glommer@parallels.com>,
	containers@lists.osdl.org, linux-kernel@vger.kernel.org,
	Pavel Emelyanov <xemul@parallels.com>,
	Serge Hallyn <serge.hallyn@canonical.com>,
	Nathan Lynch <ntl@pobox.com>,
	Oren Laadan <orenl@cs.columbia.edu>,
	Daniel Lezcano <dlezcano@fr.ibm.com>,
	LINUXFS-ML <linux-fsdevel@vger.kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>,
	Al Viro <viro@ZenIV.linux.org.uk>
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From: Pavel Emelyanov <xemul@parallels.com>

This is done to make it possible to distinguish pipes
from fifos when opening one via /proc/<pid>/fd/ link.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---
 fs/pipe.c |    1 +
 1 file changed, 1 insertion(+)

Any objections to this one? It was a part of a patchset
but can be treated independently so I'm re-sending it alone.

Index: linux-2.6.git/fs/pipe.c
===================================================================
--- linux-2.6.git.orig/fs/pipe.c
+++ linux-2.6.git/fs/pipe.c
@@ -1254,6 +1254,7 @@ out:
 
 static const struct super_operations pipefs_ops = {
 	.destroy_inode = free_inode_nonrcu,
+	.statfs = simple_statfs,
 };
 
 /*