On Fri, 2018-07-20 at 10:41 +0800, Ming Lei wrote:
> On Thu, Jul 19, 2018 at 11:01:58PM +0200, Martin Wilck wrote:
> > When bio_iov_iter_get_pages() is called
> > from __blkdev_direct_IO_simple(),
> > we already know that the content of the input iov_iter fits into a
> > single
> > bio, so we
On Thu, Jul 19, 2018 at 11:01:58PM +0200, Martin Wilck wrote:
> When bio_iov_iter_get_pages() is called from __blkdev_direct_IO_simple(),
> we already know that the content of the input iov_iter fits into a single
> bio, so we expect iov_iter_count(iter) to drop to 0. But in a single
>
When bio_iov_iter_get_pages() is called from __blkdev_direct_IO_simple(),
we already know that the content of the input iov_iter fits into a single
bio, so we expect iov_iter_count(iter) to drop to 0. But in a single invocation,
bio_iov_iter_get_pages() may add less bytes then we expect. For
