Re: [PATCH v1] driver: base: Add driver filter support

[Andi Kleen]

On 8/4/2021 11:29 AM, Kuppuswamy, Sathyanarayanan wrote:
> On 8/4/21 11:08 AM, Matthew Wilcox wrote:
> > Why use a doubly-linked-list here?  An allocating xarray should perform
> > much better and use less memory.
>
> We don't expect the list to be too long. So we may not gain any 
> significant
> advantage in terms of performance or memory when using alternate 
> lists. Since
> linked list easier to use, we chose it.
Also even if it was long it wouldn't matter because this isn't a fast 
path at all.

All that matters it to write the code as clearly as possible.

-Andi