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

On 10/10/2012 06:01 PM, Eric Blake wrote:
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)?

It should probably be another patch.  I'll look into this for v3.

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]

Sure that makes sense to optimize this.

Corey Bryant

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