1BLK_QUEUE_CHUNK_SECT(9)          Block Devices         BLK_QUEUE_CHUNK_SECT(9)
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NAME

6       blk_queue_chunk_sectors - set size of the chunk for this queue
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SYNOPSIS

9       void blk_queue_chunk_sectors(struct request_queue * q,
10                                    unsigned int chunk_sectors);
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ARGUMENTS

13       q
14           the request queue for the device
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16       chunk_sectors
17           chunk sectors in the usual 512b unit
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DESCRIPTION

20       If a driver doesn't want IOs to cross a given chunk size, it can set
21       this limit and prevent merging across chunks. Note that the chunk size
22       must currently be a power-of-2 in sectors. Also note that the block
23       layer must accept a page worth of data at any offset. So if the
24       crossing of chunks is a hard limitation in the driver, it must still be
25       prepared to split single page bios.
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28Kernel Hackers Manual 3.10         June 2019           BLK_QUEUE_CHUNK_SECT(9)
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