Re: [PATCH 1/3] Save dump_root into pid_namespace

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On Mon, Jun 06, 2016 at 08:02:08PM +0800, Zhao Lei wrote:
> +	spin_lock(&pid_ns->root_for_dump_lock);
> +
> +	if (pid_ns->root_for_dump.mnt)
> +		path_put(&pid_ns->root_for_dump);

NAK, for obvious reasons - don't do blocking operations under spinlocks,
for starters.
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