Name
blk_queue_physical_block_size — 
     set physical block size for the queue
 
Synopsis
| void blk_queue_physical_block_size ( | struct request_queue * q, | 
|  | unsigned int size ); | 
 
Arguments
- q
- 
     the request queue for the device
     
- size
- 
     the physical block size, in bytes
     
Description
   This should be set to the lowest possible sector size that the
   hardware can operate on without reverting to read-modify-write
   operations.