> > How will this work with copy_tree() and namespace duplication, which
> > currently walk the tree with only namespace_sem held?
>
> Easy - grab namespace_sem, grab vfsmount_lock, walk the subtree and bump
> mnt_busy on everything (by 1 + number of non-busy children). Then drop
> vfsmount_lock and do as usual, dropping references in tree being copied
> as you go. Nothing will get attached or detached due to namespace_sem,
> nothing will get evicted by anybody other than you since you've got all
> that stuff pinned down. End of story...
Right.
Do you have some code?
Should I try to code something up?
Miklos
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