Re: [libvirt] [PATCH 2/2] Use posix_fallocate() to allocate disk space on supported systems

Make use of the safezero() function to allocate disk space instead of safewrite() to write zeros. The safezero() function will use posix_fallocate() on supported systems. If progress activity is not requested (current behaviour), the new safezero() function will allocate the file in one go. If progress activity is requested, allocate in 512MiB chunks. Signed-off-by: Amit Shah <amit.shah(a)redhat.com&gt;