Re: [PATCH 2/4] mm/madvise: split out populate behavior check logic

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On Wed, Mar 12, 2025 at 09:47:48AM -0700, SeongJae Park wrote:
> madvise_do_behavior() has a long open-coded 'behavior' check for
> MADV_POPULATE_{READ,WRITE}.  It adds multiple layers[1] and make the
> code arguably take longer time to read.  Like is_memory_failure(), split
> out the check to a separate function.  This is not technically removing
> the additional layer but discourage further extending the switch-case.
> Also it makes madvise_do_behavior() code shorter and therefore easier to
> read.
> 
> [1] https://lore.kernel.org/bd6d0bf1-c79e-46bd-a810-9791efb9ad73@lucifer.local
> 
> Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>

Reviewed-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>




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