[lvc-project] [PATCH v2 5.10] net: defer final 'struct net' free in netns dismantle

[Fedor Pchelkin]

On Mon, 27. Jan 13:42, Hazem Mohamed Abuelfotoh wrote:
> I think a better approach will be to backport 41467d2ff4df 
> ("net: net_namespace: Optimize the code") as a prerequisite for

В принципе, неплохая идея. Василий, как думаете?

> 0f6ede9fbc74 ("net: defer final 'struct net' free in netns 
> dismantle") otherwise we may endup with refcount underflow whenever
> "net_free" & "net_drop_ns" called sequentially as with the current 
> version of the backport both of them apparently call 
> refcount_dec_and_test(&ns->passive). In 41467d2ff4df
> ("net: net_namespace: Optimize the code") there are two
> hunks that aren't directly related to this backport however 
> these are removing duplicate code into a separate function 
> which will likely help with future backports. I have backported
> both commits cleanly on 5.10.y and didn't see any issues and I 
> am currently testing the same on 5.4 as it's also missing both 
> commits.