[libvirt] [PATCH] createRawFileOpHook: avoid dead stores
Eric Blake
eblake at redhat.com
Wed Apr 7 19:42:20 UTC 2010
On 04/07/2010 12:42 PM, Jim Meyering wrote:
> +++ b/src/storage/storage_backend.c
> @@ -308,12 +308,11 @@ static int createRawFileOpHook(int fd, void *data) {
> * update every 9s is a fair-enough trade-off
> */
> unsigned long long bytes = 512 * 1024 * 1024;
> - int r;
>
> if (bytes > remain)
> bytes = remain;
> - if ((r = safezero(fd, 0, hdata->vol->allocation - remain,
> - bytes)) != 0) {
> + if (safezero(fd, 0, hdata->vol->allocation - remain,
> + bytes) != 0) {
> ret = errno;
> virReportSystemError(errno, _("cannot fill file '%s'"),
> hdata->vol->target.path);
ACK - the fact that it still compiles is proof of the dead store, so the
removal is safe.
--
Eric Blake eblake at redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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