const: make struct super_block::s_qcop const

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index e7a4e11..72743d3 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -737,7 +737,7 @@
 	.destroy_dquot	= dquot_destroy,
 };
 
-static struct quotactl_ops ext3_qctl_operations = {
+static const struct quotactl_ops ext3_qctl_operations = {
 	.quota_on	= ext3_quota_on,
 	.quota_off	= vfs_quota_off,
 	.quota_sync	= vfs_quota_sync,