Le 02/10/2014 21:33, Eric W. Biederman a écrit :
Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx> writes:
With this patch, a user can define an id for a peer netns by providing a FD or a
PID. These ids are local to netns (ie valid only into one netns).
This will be useful for netlink messages when a x-netns interface is
dumped.
You have a "id -> struct net *" table but you don't have a
"struct net * -> id" table which looks like it will impact the
performance of peernet2id at scale.
It is indirectly stores in 'struct idr'. It can be optimized later, with a
proper algorithm to find quickly this 'struct net *' (hash table? something
else?). A basic algorithm will not be more scalable than the current
idr_for_each().
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