[sheepdog] [PATCH] sheep: fix confused comments of vdi_snapshot()

[Yu Yang]

From: Yu Yang <yuyang at cmss.chinamobile.com>

fix the confused comments between snapid and vid for vdi_snapshot().

Signed-off-by: Yu Yang <yuyang at cmss.chinamobile.com>
---
 sheep/vdi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sheep/vdi.c b/sheep/vdi.c
index 63e578d..b35a763 100644
--- a/sheep/vdi.c
+++ b/sheep/vdi.c
@@ -1572,8 +1572,8 @@ int vdi_create(const struct vdi_iocb *iocb, uint32_t *new_vid)
  * 2. rollback create (base_vid != current_vid)
  *
  * This function expects SUCCESS returned from vdi_lookup().  Both rollback and
- * snap create started with current working VDI's snap_id + 1. Working VDI
- * always has the highest snapid.
+ * snap creation starts with current working VDI's vid + 1. Working VDI
+ * always has the highest vid and its snapid is 0.
  */
 int vdi_snapshot(const struct vdi_iocb *iocb, uint32_t *new_vid)
 {
-- 
1.7.9.5