On 5/9/22 04:56, Pankaj Raghav wrote:
Even though I am not sure if this optimization will directly add value looking at my experiments with the current change, I can fold this in with a comment on top of zone_size_sect_shifts variable stating that size can be npo2 and this variable is only meaningful for the po2 size scenario.
Have these experiments perhaps been run on an x86_64 CPU? These CPUs only need a single instruction to calculate ilog2(). No equivalent of that instruction is available on ARM CPUs as far as I know. I think the optimization Damien proposed will help on ARM CPUs.
Thanks, Bart. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
