Re: [libvirt] [PATCH 01/11] qemu: extract helper to get the current balloon
On 09/03/2014 12:41 AM, Francesco Romani wrote:
>
> [3] Ouch. This function is unlocking vm, even though it did not obtain
> the lock. Which it kind of has to do because of the way that
> qemuDomainObjEndJob may end up invalidating vm. While transfer
> semantics are workable, they require good comments at the start of the
> function, and making sure that the caller doesn't duplicate the efforts,
> nor forget anything else.
Will add comment documenting this. Is this sufficient or there is something
better I could do?
A comment is sufficient. Here's a similar comment I'm adding in my
series for virDomainBlockCopy:
/* bandwidth in bytes/s. Caller must lock vm beforehand, and not
* access it afterwards. */
static int
qemuDomainBlockCopyCommon(virDomainObjPtr vm,
virConnectPtr conn,
const char *path,
virStorageSourcePtr dest,
unsigned long long bandwidth,
unsigned int flags)
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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