reiserfs: constify function pointer tables

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 0011446..8f86c52 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -444,7 +444,7 @@
 	return show(m, v);
 }
 
-static struct seq_operations r_ops = {
+static const struct seq_operations r_ops = {
 	.start = r_start,
 	.next = r_next,
 	.stop = r_stop,