On Wed, 22 Jun 2016, Yury Norov wrote: > > There will be no fls() for constant at runtime because ilog2() calculates > constant values at compile-time as well. From this point of view, > this patch removes code duplication, as we already have compile-time > log() calculation in kernel, and should re-use it whenever possible.\ The reason not to use ilog there was that the constant folding did not work correctly with one or the other architectures/compilers. If you want to do this then please verify that all arches reliably do produce a constant there. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>