Re: [PATCH v2 2/7] bvec/iter: disallow zero-length segment bvecs

On Sat, Jan 02, 2021 at 03:17:34PM +0000, Pavel Begunkov wrote:

zero-length bvec segments are allowed in general, but not handled by bio
and down the block layer so filtered out. This inconsistency may be
confusing and prevent from optimisations. As zero-length segments are
useless and places that were generating them are patched, declare them
not allowed.

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>