Re: [PATCH 3/6] cifs: quit playing games with draining iovecs

[Al Viro]

On Tue, Apr 19, 2016 at 01:53:17PM -0400, Jeff Layton wrote:

> What's the advantage of using iov_iter_bvec over iov_iter_kvec ?

No need to screw with kmap() in the caller; moreover, when it comes to actual
copying it gets away with kmap_atomic() just around the memcpy(), which is
considerably cheaper.