Re: Using IPC-calls in a device driver
Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 31 May 1999 21:33:07 +0100 (BST)
> > If you are swapping I doubt you can. A swap handler cannot do any memory
> > allocations or may deadlock. Thats why we dont allow NFS swap for example.
>
> Isn't this what the network block device driver does/allows already?
> (CONFIG_BLK_DEV_NBD)
If you try and swap over NBD your machine will deadlock. NBD works because
it does some clever trickery, but thats not enough to work when swapping
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