Function fs_node_notify_security_context 

pub fn fs_node_notify_security_context(
    current_task: &CurrentTask,
    fs_node: &FsNode,
    context: &FsStr,
) -> Result<(), Errno>

Applies the given label to the given node without checking any permissions. Used by file-system implementations to set the label for a node, for example when it has prefetched the label in the xattr rather than letting it get fetched by fs_node_init_with_dentry later. Calling this doesn’t need to exclude the use of fs_node_init_with_dentry, it will just turn that call into a fast no-op. Corresponds to the inode_notifysecctx LSM hook.