在 2012-11-14三的 01:38 -0600，Doug Goldstein写道：
> On Tue, Nov 13, 2012 at 9:03 PM, liguang <lig.fnst@xxxxxxxxxxxxxx> wrote:
> > Signed-off-by: liguang <lig.fnst@xxxxxxxxxxxxxx>
> > ---
> > src/qemu/qemu_domain.c | 2 +-
> > src/qemu/qemu_driver.c | 3 +++
> > 2 files changed, 4 insertions(+), 1 deletions(-)
> >
> > diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> > index a5592b9..eb5a3d1 100644
> > --- a/src/qemu/qemu_domain.c
> > +++ b/src/qemu/qemu_domain.c
> > @@ -1647,7 +1647,7 @@ qemuDomainSnapshotForEachQcow2Raw(struct qemud_driver *driver,
> > int i;
> > bool skipped = false;
> >
> > - qemuimgarg[0] = qemuFindQemuImgBinary(driver);
> > + qemuimgarg[0] = driver->qemuImgBinary;
> > if (qemuimgarg[0] == NULL) {
> > /* qemuFindQemuImgBinary set the error */
> > return -1;
> > diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> > index 5f91688..a25fb53 100644
> > --- a/src/qemu/qemu_driver.c
> > +++ b/src/qemu/qemu_driver.c
> > @@ -626,6 +626,9 @@ qemudStartup(int privileged) {
> > if (!qemu_driver->domainEventState)
> > goto error;
> >
> > + /* find kvm-img or qemu-img */
> > + qemuFindQemuImgBinary(qemu_driver);
> > +
> > /* read the host sysinfo */
> > if (privileged)
> > qemu_driver->hostsysinfo = virSysinfoRead();
> > --
> > 1.7.1
> >
> > --
> > libvir-list mailing list
> > libvir-list@xxxxxxxxxx
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>
> Honestly this entire patch can be dropped because its not correct.
> qemuFindQemuImgBinary() only looks up the path to the binary the first
> time and then caches it from there on in. So you should always be
> using qemuFindQemuImgBinary(). As far as the addition to the startup
> of looking it up, it seems like that's really a pre-mature
> optimization for your second patch.
>
> So I'd have to say NACK on this change.
>
your reason sounds strange, you call qemuFindQemuImgBinary()
to get qemu-img handler every time you want to use it,
I use the handler freely for I've I've initialized before
why can't I use driver->qemuImgBinary instead of
qemuFindQemuImgBinary()?
--
li guang lig.fnst@xxxxxxxxxxxxxx
linux kernel team at FNST, china
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