[PATCH] tracefs: Annotate tracefs_ops with __ro_after_init

[Zubin Mithra]

tracefs_ops is initialized inside tracefs_create_instance_dir and not
modified after. tracefs_create_instance_dir allows for initialization
only once, and is called from create_trace_instances(marked __init),
which is called from tracer_init_tracefs(marked __init).

Signed-off-by: Zubin Mithra <z...@chromium.org>
Reviewed-by: Kees Cook <keesc...@chromium.org>
---
 fs/tracefs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
index bea8ad876bf9..20e965873f27 100644
--- a/fs/tracefs/inode.c
+++ b/fs/tracefs/inode.c
@@ -53,7 +53,7 @@ static const struct file_operations tracefs_file_operations = 
{
 static struct tracefs_dir_ops {
        int (*mkdir)(const char *name);
        int (*rmdir)(const char *name);
-} tracefs_ops;
+} tracefs_ops __ro_after_init;
 
 static char *get_dname(struct dentry *dentry)
 {
-- 
2.18.0.233.g985f88cf7e-goog