[PATCH] landlock: Add counted_by and fix comment in landlock_ruleset

[Günther Noack]

On Sun, Feb 08, 2026 at 11:54:48PM +0000, Tingmao Wang wrote:
> For a domain, this array stores the access masks for each layer (of
> which there are num_layers of them).  For an unmerged ruleset, we have
> one "layer", and one element in this array.  This annotation serves as
> useful documentation.
> 
> This also removes a comment saying that num_layers = 0 for unmerged
> rulesets, which is incorrect (it is 1).
> 
> Signed-off-by: Tingmao Wang <m at maowtm.org>

Reviewed-by: Günther Noack <gnoack at google.com>

Thank you for fixing this! We should use these bounds check macros
wherever we can, IMHO.  Removing the remark about num_layers=0 is also
correct.

—Günther