[PATCH] VFS: Add "device" tag to /proc/self/mountstats

[Bryan Schumaker <bjschuma-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>]

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-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>
CC: stable-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org [>=2.6.39]
---
 fs/namespace.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 22bfe82..1429114 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1109,6 +1109,7 @@ static int show_vfsstat(struct seq_file *m, void *v)
 
 	/* 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) {
-- 
1.7.6.3
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