[Libguestfs] [PATCH nbdkit 6/9] nbd: Don't cache nbd_aio_get_fd in the handle.

[Eric Blake]

On 7/1/20 2:17 AM, Richard W.M. Jones wrote:
> It's not necessary to cache this, and the libnbd API doesn't guarantee
> that it always stays the same.

But should the libnbd API guarantee it?  Then again, looking at the 
various examples in libnbd itself, I do see that they all check 
nbd_aio_get_fd() frequently, rather than caching it; and 
glib-main-loop.c even mentions:

   /* The poll file descriptor can change or become invalid at any
    * time.

Okay, this change makes sense.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
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