Re: [Patch v2 1/2] mm/rmap.c: don't reuse anon_vma if we just want a copy

On Thu, Oct 10, 2019 at 06:29:32PM +0300, Konstantin Khlebnikov wrote: >On 10/10/2019 16.58, Wei Yang wrote: >> Before commit 7a3ef208e662 ("mm: prevent endless growth of anon_vma >> hierarchy"), anon_vma_clone() doesn't change dst->anon_vma. While after >> this commit, anon_vma_clone() will try to

Re: [Patch v2 1/2] mm/rmap.c: don't reuse anon_vma if we just want a copy

On Thu, Oct 10, 2019 at 06:29:32PM +0300, Konstantin Khlebnikov wrote: >On 10/10/2019 16.58, Wei Yang wrote: >> Before commit 7a3ef208e662 ("mm: prevent endless growth of anon_vma >> hierarchy"), anon_vma_clone() doesn't change dst->anon_vma. While after >> this commit, anon_vma_clone() will try to

Re: [Patch v2 1/2] mm/rmap.c: don't reuse anon_vma if we just want a copy

On 10/10/2019 16.58, Wei Yang wrote: Before commit 7a3ef208e662 ("mm: prevent endless growth of anon_vma hierarchy"), anon_vma_clone() doesn't change dst->anon_vma. While after this commit, anon_vma_clone() will try to reuse an exist one on forking. But this commit go a little bit further for th

[Patch v2 1/2] mm/rmap.c: don't reuse anon_vma if we just want a copy

Before commit 7a3ef208e662 ("mm: prevent endless growth of anon_vma hierarchy"), anon_vma_clone() doesn't change dst->anon_vma. While after this commit, anon_vma_clone() will try to reuse an exist one on forking. But this commit go a little bit further for the case not forking. anon_vma_clone() is