Re: [PATCH V2] block: allow for_each_bvec to support zero len bvec

On 8/17/20 4:00 AM, Ming Lei wrote:

Block layer usually doesn't support or allow zero-length bvec. Since commit 1bdc76aea115 ("iov_iter: use bvec iterator to implement iterate_bvec()"), iterate_bvec() switches to bvec iterator. However, Al mentioned that 'Zero-length segments are not disallowed' in iov_iter.

Fixes for_each_bvec() so that it can move on after seeing one zero length bvec.

Applied, thanks.