Re: [Patch v4 2/2] mm/rmap.c: reuse mergeable anon_vma as parent when fork

On 11/10/2019 10.22, Wei Yang wrote: In function __anon_vma_prepare(), we will try to find anon_vma if it is possible to reuse it. While on fork, the logic is different. Since commit 5beb49305251 ("mm: change anon_vma linking to fix multi-process server scalability issue"), function anon_vma_clo

[Patch v4 2/2] mm/rmap.c: reuse mergeable anon_vma as parent when fork

In function __anon_vma_prepare(), we will try to find anon_vma if it is possible to reuse it. While on fork, the logic is different. Since commit 5beb49305251 ("mm: change anon_vma linking to fix multi-process server scalability issue"), function anon_vma_clone() tries to allocate new anon_vma for