linux-kernel - [PATCH resend] vfs: Add ->statfs callback for pipefs

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Message-ID: <20110824080924.GG29452@sun>
Date:	Wed, 24 Aug 2011 12:09:24 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...IV.linux.org.uk>
Cc:	James Bottomley <jbottomley@...allels.com>,
	Tejun Heo <tj@...nel.org>,
	Glauber Costa <glommer@...allels.com>,
	containers@...ts.osdl.org, linux-kernel@...r.kernel.org,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Nathan Lynch <ntl@...ox.com>,
	Oren Laadan <orenl@...columbia.edu>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	LINUXFS-ML <linux-fsdevel@...r.kernel.org>
Subject: [PATCH resend] vfs: Add ->statfs callback for pipefs

From: Pavel Emelyanov <xemul@...allels.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@...allels.com>
Reviewed-by: Tejun Heo <tj@...nel.org>
Acked-by: Serge Hallyn <serge.hallyn@...onical.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.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,
 };
 
 /*
--
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