Re: [Libguestfs] [PATCH v2 1/4] file: Avoid unsupported fallocate() calls

On Mon, Aug 13, 2018 at 8:44 PM Eric Blake <eblake(a)redhat.com&gt; wrote: > > #ifdef FALLOC_FL_ZERO_RANGE > > - r = do_fallocate (h->fd, FALLOC_FL_ZERO_RANGE, offset, count); > > - if (r == -1 && errno != EOPNOTSUPP) { > > - nbdkit_error ("zero: %m"); > > + if (h->can_zero_range) { > > + r = do_fallocate (h->fd, FALLOC_FL_ZERO_RANGE, offset, count); > > + if (r== 0) > > Spacing is off. >