On Tue, 9 Sep 2014, Andrew Morton wrote: > > > > - if (unlikely(ZERO_OR_NULL_PTR(objp))) > > + if (unlikely(ZERO_OR_NULL_PTR(objp) || IS_ERR(objp))) > > return; > > kfree() is quite a hot path to which this will add overhead. And we > have (as far as we know) no code which will actually use this at > present.
We could come up with a macro that does both. Basically if objp < 4086 or so (signed comparison) then just return. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
