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block: document zone_append_max_bytes attribute 

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 <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@edc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2021-01-28 13:47:26 +09:00 committed by Jens Axboe
parent 7a800a20ae
commit f1836426ce
1 changed files with 6 additions and 0 deletions
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6
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