Re: [PATCH 0/5] mm/vma: make more mmap logic userland testable

[Wei Yang <richard.weiyang@gmail.com>]

On Tue, Dec 03, 2024 at 06:05:07PM +0000, Lorenzo Stoakes wrote:
>This series carries on the work the work started in previous series and
                        ^^^      ^^^

Duplicated?

>continued in commit 52956b0d7fb9 ("mm: isolate mmap internal logic to
>mm/vma.c"), moving the remainder of memory mapping implementation details
>logic into mm/vma.c allowing the bulk of the mapping logic to be unit
>tested.
>
>It is highly useful to do so, as this means we can both fundamentally test
>this core logic, and introduce regression tests to ensure any issues
>previously resolved do not recur.
>
>Vitally, this includes the do_brk_flags() function, meaning we have both
>core means of userland mapping memory now testable.
>
>Performance testing was performed after this change given the brk() system
>call's sensitivity to change, and no performance regression was observed.

May I ask what performance test is done?


-- 
Wei Yang
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