commit a877ee03ac010ded434b77f7831f43cbb1fcc60f
author Bryan Schumaker <bjschuma@netapp.com> Fri Oct 07 13:41:15 2011 -0400
committer Christoph Hellwig <hch@serles.lst.de> Fri Oct 28 13:55:08 2011 +0200
tree cb8030a12bb2d0c13ae7d46d918a08e14701a59b
parent 814e1d25a59662f9552e6dc1305d1df3616fc87e

vfs: add "device" tag to /proc/self/mountstats

nfsiostat was failing to find mounted filesystems on kernels after
2.6.38 because of changes to show_vfsstat() by commit
c7f404b40a3665d9f4e9a927cc5c1ee0479ed8f9.  This patch adds back the
"device" tag before the nfs server entry so scripts can parse the
mountstats file correctly.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
CC: stable@kernel.org [>=2.6.39]
Signed-off-by: Christoph Hellwig <hch@lst.de>

fs/namespace.c

diff --git a/fs/namespace.c b/fs/namespace.c
index b4febb2..e5e1c7d 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1109,6 +1109,7 @@
 
 	/* device */
 	if (mnt->mnt_sb->s_op->show_devname) {
+		seq_puts(m, "device ");
 		err = mnt->mnt_sb->s_op->show_devname(m, mnt);
 	} else {
 		if (mnt->mnt_devname) {