On 15.10.20 22:24, Pankaj Gupta wrote: >> We actually need one byte less (next_mb_id is exclusive, first_mb_id is >> inclusive). Simplify. >> >> Cc: "Michael S. Tsirkin" <[email protected]> >> Cc: Jason Wang <[email protected]> >> Cc: Pankaj Gupta <[email protected]> >> Signed-off-by: David Hildenbrand <[email protected]> >> --- >> drivers/virtio/virtio_mem.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c >> index a1f5bf7a571a..670b3faf412d 100644 >> --- a/drivers/virtio/virtio_mem.c >> +++ b/drivers/virtio/virtio_mem.c >> @@ -257,8 +257,8 @@ static enum virtio_mem_mb_state >> virtio_mem_mb_get_state(struct virtio_mem *vm, >> */ >> static int virtio_mem_mb_state_prepare_next_mb(struct virtio_mem *vm) >> { >> - unsigned long old_bytes = vm->next_mb_id - vm->first_mb_id + 1; >> - unsigned long new_bytes = vm->next_mb_id - vm->first_mb_id + 2; >> + unsigned long old_bytes = vm->next_mb_id - vm->first_mb_id; >> + unsigned long new_bytes = old_bytes + 1; > > Maybe we can avoid new_bytes & old_bytes variables, instead use single > variable. Can later be used with PFN_UP/PFN_DOWN.
I'll see if it fits into a single line now - if it does, I'll move it there. Thanks! -- Thanks, David / dhildenb
