linux-kernel - Re: [RFC][PATCH 8/8] check files for checkpointability

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Date:	Mon, 02 Mar 2009 09:30:52 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Nathan Lynch <ntl@...ox.com>
Cc:	"Serge E. Hallyn" <serue@...ibm.com>,
	containers <containers@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	hch@...radead.org, Ingo Molnar <mingo@...e.hu>,
	Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: [RFC][PATCH 8/8] check files for checkpointability

On Mon, 2009-03-02 at 11:22 -0600, Nathan Lynch wrote:
> No.. I mean what if a process 1234 does
> 
> f = fopen("/proc/1234/stat", "r");
> 
> and is then checkpointed.  Can that path be resolved during restart,
> before pid 1234 is alive?

Heh, that's a good one.

It does mean that we can't do restore like this:

	for_each_cr_task()
		restore_task_struct()
		restore_files()
		...

We have to do:

	for_each_cr_task()
		restore_task_struct()
	for_each_cr_task()
		restore_files()


-- Dave

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