Re: [PATCH 13/17] watch_queue: Implement mount topology and attribute change notifications [ver #5]

From: Miklos Szeredi
Date: Wed Aug 05 2020 - 15:56:45 EST

On Wed, Aug 5, 2020 at 1:36 PM Ian Kent <raven@xxxxxxxxxx> wrote:

> I can see in the kernel code that an error is returned if the message
> buffer is full when trying to add a message, I just can't see where
> to get it in the libmount code.
> That's not really a communication protocol problem.
> Still I need to work out how to detect it, maybe it is seen by
> the code in libmount already and I simply can't see what I need
> to do to recognise it ...
> So I'm stuck wanting to verify I have got everything that was
> sent and am having trouble moving on from that.

This is the commit that should add the overrun detection capability:

e7d553d69cf6 ("pipe: Add notification lossage handling")