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Re: [libvirt] [PATCH v2 2/3] monitor: Enable adding an inherited fd to an fd set

On 10/10/2012 08:20 AM, Corey Bryant wrote:
> qmp_add_fd() gets an fd that was received over a socket with
> SCM_RIGHTS and adds it to an fd set.  This patch adds support
> that will enable adding an fd that was inherited on the
> command line to an fd set.
> This patch also prevents removal of an fd from an fd set during
> initialization.  This allows the fd to remain in the fd set after
> probing of the image file.

You're mixing code motion and semantic change in one patch (keyword
"also" in your commit message; should the semantic change be moved to a
separate patch (possibly squashed into 1/3)?

> Signed-off-by: Corey Bryant <coreyb linux vnet ibm com>
> ---

> -    if (has_fdset_id) {
> -        QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
> -            if (mon_fdset->id == fdset_id) {
> -                break;
> -            }
> -        }
> -    }

Since you maintain mon_fdsets in sorted id order, should you optimize
this loop to abort the QLIST_FOREACH early if fdset_id is less than
mon_fdset->id?  [I only noticed this because of code motion, so it is a
pre-existing condition and therefore a separate patch, or another thing
to squash into 1/3]

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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