Re: [PATCH v2 1/8] lib/find_bit.c: Add find_last_zero_bit

[Nikolay Borisov]

On 6.12.20 г. 10:56 ч., Yun Levi wrote:
>> This, and the change above this, are not related to this patch so you
>> might not want to include them.
> 
>> Also, why is this patch series even needed?  I don't see a justification
>> for it anywhere, only "what" this patch is, not "why".
> 
> I think the find_last_zero_bit will help to improve in
> 7th patch's change and It can be used in the future.
> But if my thinking is bad.. Please let me know..
> 
> Thanks.
> Levi.
> 

btrfs' free space cache v1 is going to be removed some time in the
future so introducing kernel-wide change just for its own sake is a bit
premature. Also do you have measurements showing it indeed improves
performances?