Re: [PATCH net-next v2 01/13] genetlink: refactor the cmd <> policy mapping dump

[Jakub Kicinski <kuba@kernel.org>]

On Wed, 2 Nov 2022 16:52:21 -0700 Jacob Keller wrote:
> Does the change to ctx->opidx have any other side effects we care about? 
> if not it might be more legible to write this as:
> 
> /* don't modify ctx->opidx */
> }
> 
> while (!ctx->single_op && ctx->opidx < genl_get_cmd_cnt(ctx->r)) {
> 
> 
> That makes the intent a bit more clear and shouldn't need a comment 
> about entering the loop. It also means we don't need to modify 
> ctx->opidx, though I'm not sure if those other side effects matter or 
> not.. we were modifying it before..
> 
> I don't know what else depends on the opidx.

I was just trying to make the patches slightly easier to read.
This chunk gets rewritten again in patch 10, and the opidx thing 
is gone completely. I maintain a "keep dumping" boolean called
dump_map (because this code is dumping a mapping rather than 
the policies which come later)

LMK if I should try harder to improve this patch or what patch 10 
does makes this moot.