Memory controller and operating method thereof

A method of operating a memory controller, the method comprising:

• receiving a read request for first user data corresponding to a first logical block address from a host;
• receiving a read request for second user data corresponding to a second logical block address from the host;
• checking metadata associated with the first user data;
• checking metadata associated with the second user data;
• transferring the first user data to the host;
• and
• transferring the second user data to the host.

A memory controller comprising:

• a buffer memory configured to store user data and associated metadata therein, the metadata indicating whether the associated user data is corrupted;
• a memory controller configured to,
• receive a request from a host for a plurality of the user data;
• determine if each of the plurality of user data in the request is corrupted based on the associated metadata prior to or simultaneously with transferring a first user data of the plurality of user data to the host.