1BLK_QUEUE_PHYSICAL_B(9)          Block Devices         BLK_QUEUE_PHYSICAL_B(9)
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NAME

6       blk_queue_physical_block_size - set physical block size for the queue
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SYNOPSIS

9       void blk_queue_physical_block_size(struct request_queue * q,
10                                          unsigned int size);
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ARGUMENTS

13       q
14           the request queue for the device
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16       size
17           the physical block size, in bytes
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DESCRIPTION

20       This should be set to the lowest possible sector size that the hardware
21       can operate on without reverting to read-modify-write operations.
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24Kernel Hackers Manual 2.6.         June 2019           BLK_QUEUE_PHYSICAL_B(9)
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