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Re: [Xen-devel] [PATCH 6/6] libxl: support unmapping static shared memory areas during domain destruction

On Wed, Aug 23, 2017 at 02:08:40AM +0800, Zhongze Liu wrote:
> Add libxl__sshm_del to Unmap static shared memory areas mapped by

Unmap -> unmap

> libxl__sshm_add during domain creation. The unmapping process is:
> * For a master: check if it still has living slaves: 1) if yes, mark its
>   status as "zombie", and don't destroy the information under
>   /local/static_shm; 2) if no, simply cleanup related xs entries
> * For a slave: unmap the shared pages, and cleanup related xs entries. If
>   this is the only slave, and it's master is in zombie state, also cleanup
>   the master entries.

I still think refcounting the node is better than this customised

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