[PATCH 1/4] nvmet: set loop queue's segment boundary mask as PAGE_SIZE - 1

[hch@lst.de (Christoph Hellwig)]

On Wed, Mar 27, 2019@04:26:26PM +0800, Ming Lei wrote:
> On Wed, Mar 27, 2019@4:15 PM Christoph Hellwig <hch@lst.de> wrote:
> >
> > On Tue, Mar 26, 2019@03:37:36PM +0800, Ming Lei wrote:
> > > On Tue, Mar 26, 2019@3:36 PM Christoph Hellwig <hch@lst.de> wrote:
> > > >
> > > > Note that in many cases allocating larger pages in the other targets
> > > > would be useful.  Given that you fix the one places where we made a page
> > > > size assumption I don't see a great need to limit outselves here.
> > >
> > > block device backed ns still needs this patch.
> >
> > Then we need to fix that code as well.  Or even better make bio_add_page
> > handle the larger than page case fine if it really doesn't do that yet.
> 
> Given loop is the only exception, this patch is exactly the fix, right?

Well, we want to be able to pass multi-page biovecs everywhere, so I think
we'd just solve this based on loop so that we can later take advantage of
it everywhere.