librbd/BlockGuard: refine comment to be easy understood

Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>

diff --git a/src/librbd/BlockGuard.h b/src/librbd/BlockGuard.h
index 1b59ab7887555d0727c1c3c2f19ca2002c1733eb..3641512f8b2b6be0c930b7b5029dad99217fd0b2 100644 (file)
--- a/src/librbd/BlockGuard.h
+++ b/src/librbd/BlockGuard.h
@@ -55,7 +55,7 @@ public:
   BlockGuard &operator=(const BlockGuard&) = delete;
 
   /**
-   * Detain future IO for a range of blocks. the guard will assume
+   * Detain future IO for a range of blocks. the guard will keep
    * ownership of the provided operation if the operation is blocked.
    * @return 0 upon success and IO can be issued
    *         >0 if the IO is blocked,