Relinking scheme for sub-blocks of grown bad memory blocks

A data storage device, comprising:

• a controller;
• and
• a memory block relinking system associated with the controller and operable to:
• execute at least one operation on at least one of a first sub-block and a second sub-block of a memory block that has been identified as a grown bad block;
• identify the at least one of the first sub-block and the second sub-block of the memory block as a relinking candidate based, at least in part, on a determination that the at least one operation that was executed on the at least one of the first sub-block and the second sub-block is successful;
• identify one or more metrics associated with the at least one of the first sub-block and the second sub-block;
• and
• logically link the at least one of the first sub-block and the second sub-block to a corresponding sub-block of another memory block based, at least in part, on the one or more metrics.

A data storage device, comprising:

• means for executing an operation on a first sub-block of a first memory block of one or more memory blocks that have been identified as a grown bad block;
• means for determining whether the operation on the first sub-block of the first memory block is successful;
• means for identifying the first sub-block of the first memory block as a sub-block relinking candidate based, at least in part, on a determination that the operation on the first sub-block of the first memory block is successful;
• means for identifying one or more metrics associated with the first sub-block of the first memory block;
• and
• logically linking the first sub-block of the first memory block to a first sub-block of a second memory block, the first sub-block of the second memory block having been identified as a sub-block relinking candidate and having one or more metrics within a threshold of the one or more metrics associated with the first sub-block of the first memory block.