Re: [PATCH] mm/sparse: return right away if sparsemap_buf is null

[David Hildenbrand <david@redhat.com>]

On 07.08.24 05:21, Leesoo Ahn wrote:
> 2024년 7월 28일 (일) 오후 9:43, Mike Rapoport <rppt@kernel.org>님이 작성:
>>
>> On Fri, Jul 26, 2024 at 04:10:23PM +0900, Leesoo Ahn wrote:
>>> sparse_buffer_fini(..) takes the following actions even though the value of
>>> sparsemap_buf is NULL,
>>> 1. calculate size of sparsemap buffer (which is meaningless).
>>> 2. set sparsemap_buf variable to NULL (although it is already NULL).
>>>
>>> These steps are unnecessary if the variable, sparsemap_buf is NULL.
>>>
>>> Refactor the function to return right away if the variable is NULL.
>>> Hence, it doesn't need to take further actions.
>>
>> sparse_buffer_fini() is called a few times on init so saving a jump (if at
>> all) does not worth the churn.
> 
> Fair enough.
> 
> Any related to refactoring codebase will be unlikely to be taken into upstream??

Any reasonable cleanups or reasonable optimizations are welcome.

Micro-optimizations that effectively add code/LOC, not so much :)

-- 
Cheers,

David / dhildenb