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Re: [Qemu-devel] [PATCH v3 0/4] char: write callback, virtio-console: fl


From: Amit Shah
Subject: Re: [Qemu-devel] [PATCH v3 0/4] char: write callback, virtio-console: flow control
Date: Thu, 15 Apr 2010 18:28:12 +0530
User-agent: Mutt/1.5.19 (2009-01-05)

On (Thu) Apr 15 2010 [13:04:40], Paul Brook wrote:
> > This series lets interested callers ask for an -EAGAIN return from the
> > chardev backends (only unix and tcp sockets as of now) to implement
> > their own flow control.
> 
> As mentioned previously, I think this is a bad idea.  The device has no 
> useful 
> way of determining when to transmit the rest of the data.

The device gets a callback which indicates the chardev is ready to
accept more data.

                Amit




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