BLK_QUEUE_LOGICAL_BL(9) Block Devices BLK_QUEUE_LOGICAL_BL(9)NAMEblk_queue_logical_block_size - set logical block size for the queue
void blk_queue_logical_block_size(struct request_queue * q,
unsigned short size);
the request queue for the device
the logical block size, in bytes
This should be set to the lowest possible block size that the storage
device can address. The default of 512 covers most hardware.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 BLK_QUEUE_LOGICAL_BL(9)