Re: [RFC PATCH v2 4/6] net/core: apply pm_runtime_set_memalloc_noioon network devices

From: Alan Stern
Date: Mon Oct 22 2012 - 15:18:21 EST

On Mon, 22 Oct 2012, Ming Lei wrote:

> Deadlock might be caused by allocating memory with GFP_KERNEL in
> runtime_resume callback of network devices in iSCSI situation, so
> mark network devices and its ancestor as 'memalloc_noio_resume'
> with the introduced pm_runtime_set_memalloc_noio().

Is this really needed? Even with iSCSI, doesn't register_disk() have
to be called for the underlying block device? And given your 3/6
patch, wouldn't that mark the network device?

Alan Stern

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