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SubjectRe: [PATCH 2/5] exec: simplify ->sighand switching
> There is no any reason to do recalc_sigpending() after changing ->sighand.
> To begin with, recalc_sigpending() does not take ->sighand into account.

I agree. I think that call dates from before some other cleanups in that
code, when ->signal was changed there. At the time, it was the most
conservative change to leave recalc_sigpending in case the side effects it
used to have were desireable (we've since decided to change those anyway).

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