On Wed, Jun 03, 2020 at 03:29:02PM +0800, Jason Wang wrote:

On 2020/6/2 下午9:06, Michael S. Tsirkin wrote:

quoted

Return code of fetch_buf is confusing, so callers resort to
tricks to get to sane values. Let's switch to something standard:
0 empty, >0 non-empty, <0 error.

Signed-off-by: Michael S. Tsirkin<mst@redhat.com>
---
  drivers/vhost/vhost.c | 24 ++++++++++++++++--------
  1 file changed, 16 insertions(+), 8 deletions(-)

Why not squashing this into patch 2 or 3?

Thanks

It makes the tricky patches smaller. I'll consider it,
for now this split is also because patches 1-3 have
already been tested.

-- 
MST