On 12/17/2014 02:57 AM, Konstantin Khlebnikov wrote:
> @@ -236,6 +240,13 @@ static inline void unlock_anon_vma_root(struct anon_vma
> *root)
> /*
> * Attach the anon_vmas from src to dst.
> * Returns 0 on success, -ENOMEM on failure.
> + *
> + * If dst->anon_vma is NULL this function tries t
Constantly forking task causes unlimited grow of anon_vma chain.
Each next child allocates new level of anon_vmas and links vma to all
previous levels because pages might be inherited from any level.
This patch adds heuristic which decides to reuse existing anon_vma instead
of forking new one. It
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