Signed-off-by: xiaomanh <huangxiaoman@cmss.chinamobile.com>
* There are 3 ways to read the ceph context-- the old way and two new ways.
* In the old way, code would simply read the public variables of the
* configuration, without taking a lock. In the new way #1, code registers a
- * configuration obserever which receives callbacks when a value changes. These
+ * configuration observer which receives callbacks when a value changes. These
* callbacks take place under the md_config_t lock. Alternatively one can use
* get_val(const char *name) method to safely get a copy of the value.
*