block, documentation: Explain the word 'segments'
Several block layer users who are not kernel developers do not know that the word 'segment' refers to an element in a DMA scatter/gather list. Make the block layer documentation easier to understand by stating explicitly what the word 'segment' stands for. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>alistair/sunxi64-5.4-dsi
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@ -98,8 +98,9 @@ This is the maximum number of kilobytes supported in a single data transfer.
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max_integrity_segments (RO)
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max_integrity_segments (RO)
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When read, this file shows the max limit of integrity segments as
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Maximum number of elements in a DMA scatter/gather list with integrity
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set by block layer which a hardware controller can handle.
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data that will be submitted by the block layer core to the associated
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block driver.
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max_sectors_kb (RW)
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max_sectors_kb (RW)
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@ -109,11 +110,12 @@ size allowed by the hardware.
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max_segments (RO)
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max_segments (RO)
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-----------------
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Maximum number of segments of the device.
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Maximum number of elements in a DMA scatter/gather list that is submitted
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to the associated block driver.
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max_segment_size (RO)
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max_segment_size (RO)
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Maximum segment size of the device.
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Maximum size in bytes of a single element in a DMA scatter/gather list.
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minimum_io_size (RO)
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minimum_io_size (RO)
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--------------------
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--------------------
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