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

Miklos Szeredi
2020-03-04T16:11:12Z

On Fri, Feb 21, 2020 at 7:03 PM David Howells <dhowells@redhat.com> 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