Re: [PATCH 3/9] fs: explicitly check for CHECK_IOVEC_ONLY in rw_copy_check_uvector

Matthew Wilcox
2020-09-18T12:56:21Z

On Fri, Sep 18, 2020 at 02:45:27PM +0200, Christoph Hellwig wrote:
> }
> - if (type >= 0
> - && unlikely(!access_ok(buf, len))) {
> + if (type != CHECK_IOVEC_ONLY && unlikely(!access_ok(buf, len))) {

drop the unlikely() at the same time? if it's really advantageous,
that should be embedded in the access_ok macro.