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As Linus noted, the test for 0 is needless, groups type can follow the usual kernel style and 8*sizeof(unsigned long) is BITS_PER_LONG: > The code [..] isn't technically incorrect... > But it is stupid. > Why stupid? Because the test for 0 is pointless. > > Just doing > if (nlk->ngroups < 8*sizeof(groups)) > groups &= (1UL << nlk->ngroups) - 1; > > would have been fine and more understandable, since the "mask by shift > count" already does the right thing for a ngroups value of 0. Now that > test for zero makes me go "what's special about zero?". It turns out > that the answer to that is "nothing". [..] > The type of "groups" is kind of silly too. > > Yeah, "long unsigned int" isn't _technically_ wrong. But we normally > call that type "unsigned long". Cleanup my piece of pointlessness. Cc: "David S. Miller" <davem@davemloft.net> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: netdev@vger.kernel.org Fairly-blamed-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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