Previously _iov_iter_fast_forward can fast forward only from the
start of the iovec array. This patch enables fast forward in the
middle of the iovec array.
Change-Id: I801fc46dec3c759e1d754042abe15e7100cbdc17
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453734
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>