Relaxed erase parameters for block erasures in non-volatile storage media

A method comprising:

• iteratively erasing a block of non-volatile storage media until a count of non-erasable bits satisfies criteria comprising an allowable non-erasable bits parameter;
• determining that a number of iterations needed to erase the block exceeds a threshold number of iterations;
• and
• in response to the number of iterations exceeding the threshold number of iterations, increasing the allowable non-erasable bits parameter for a subsequent erasure of the block.

A storage device comprising:

• non-volatile storage media comprising memory blocks;
• a controller configured to:
• track a loop count for an erasure of one or more of the memory blocks;
• after the erasure, determine that the loop count for the erasure did not exceed a threshold loop count for the erasure;
• in response to determining that the loop count did not exceed the threshold loop count, reduce an allowed non-erasable bits parameter for a subsequent erasure of the one or more of the memory blocks.

A computing apparatus comprising:

• a host processing system;
• a storage system coupled to the host processing system and configured to:
• receive a trim command from the host processing system to initiate an erasure of a block of non-volatile storage media;
• in response to the trim command, erase the block of the non-volatile storage media based on an allowable non-erasable bits value;
• and
• modify the allowable non-erasable bits value for a subsequent erasure of the block in response to a loop count for the erasure having met at least one criterion.

An apparatus comprising:

• a means for iteratively erasing a block of non-volatile storage media until a count of non-erasable bits satisfies an allowable non-erasable bits threshold;
• a means for determining that a number of iterations needed to erase the block exceeds a threshold number of iterations;
• and
• a means for increasing the allowable non-erasable bits value for at least one subsequent erasure of the block in response to the number of iterations exceeding the threshold number of iterations.