Re: [PATCH 6/7] fcntl: Don't use ambiguous SIG_POLL si_codes

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On 07/18, Eric W. Biederman wrote:
>
> -			BUG_ON((reason & __SI_MASK) != __SI_POLL);
> +			BUG_ON((reason < POLL_IN) || (reason > NSIGPOLL));
                                                      ^^^^^^^^^^^^^^^^^
looks obviously wrong? Say, POLL_IN is obviously > NSIGPOLL == 6.

Probably you meant

			BUG_ON((reason < POLL_IN) || (reason - POLL_IN > NSIGPOLL)

?

but this contradicts with the next line:

>  			if (reason - POLL_IN >= NSIGPOLL)
>  				si.si_band  = ~0L;

confused...

Oleg.

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