Re: [PATCH 10/17] fsinfo: Allow mount information to be queried [ver #17]

[Miklos Szeredi]

On Fri, Feb 21, 2020 at 7:03 PM David Howells <dhowells@xxxxxxxxxx> wrote:
 +
> +/*
> + * Return information about the submounts relative to path.
> + */
> +int fsinfo_generic_mount_children(struct path *path, struct fsinfo_context *ctx)
> +{
> +       struct fsinfo_mount_child record;
> +       struct mount *m, *child;
> +
> +       if (!path->mnt)
> +               return -ENODATA;
> +
> +       m = real_mount(path->mnt);
> +
> +       rcu_read_lock();
> +       list_for_each_entry_rcu(child, &m->mnt_mounts, mnt_child) {

mnt_mounts is not using _rcu primitives, so why is this rcu safe?

Thanks,
Miklos