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block: document zone_append_max_bytes attribute

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The description of the zone_append_max_bytes sysfs queue attribute is
missing from Documentation/block/queue-sysfs.rst. Add it.

Signed-off-by: Damien Le Moal <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Damien Le Moal
2021-02-10 07:44:40 -07:00
committed by Jens Axboe
parent 7a800a20ae
commit f1836426ce
1 changed files with 6 additions and 0 deletions
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Documentation/block/queue-sysfs.rst
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@@ -261,6 +261,12 @@ For block drivers that support REQ_OP_WRITE_ZEROES, the maximum number of
bytes that can be zeroed at once. The value 0 means that REQ_OP_WRITE_ZEROES
is not supported.
zone_append_max_bytes (RO)
--------------------------
This is the maximum number of bytes that can be written to a sequential
zone of a zoned block device using a zone append write operation
(REQ_OP_ZONE_APPEND). This value is always 0 for regular block devices.
zoned (RO)
----------
This indicates if the device is a zoned block device and the zone model of the