Hello, Al. On Thu, Mar 06, 2014 at 08:30:30PM +0000, Al Viro wrote: > > Also, I think it'd be better to split addition of first_free hint to a > > separate patch. > > OK, but I'm not sure how much does it simplify things, actually.
Not much, but it should at least help bisection if something goes wrong, I think. > > A comment explaining why ignoring the free bit during bin search is > > okay would be nice? > > Huh? We are not ignoring it - we are searching for exact value, including > the lower bit being set. It might be worth adding a comment next to > "freeme |= 1;" before the loop, but that's it. These two BUG_ON() fold Oh yeah, nothing too much. I was just thinking about noting that looking for the exact match is enough as we're looking for the matching busy slot and the bit itself can't change ordering between entries. > > > + if (unlikely(align < 2)) > > > + align = 2; > > > > Please add a comment explaining why the above min alignment is > > necessary. > > Umm... Will "we want the lowest bit of offset available for free/in_use > indicator" do? Yeap. Thanks! -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
