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block, documentation: Fix wbt_lat_usec documentation 

Fix the spelling of the wbt_lat_usec sysfs attribute.

Fixes: 87760e5eef ("block: hook up writeback throttling") # v4.10.
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>
This commit is contained in:
Bart Van Assche 2019-06-28 13:07:42 -07:00 committed by Jens Axboe
parent 152c762e92
commit 152c7776b9
1 changed files with 2 additions and 2 deletions
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4
Documentation/block/queue-sysfs.txt
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@ -185,8 +185,8 @@ This is the number of bytes the device can write in a single write-same
command. A value of '0' means write-same is not supported by this
device.
wb_lat_usec (RW)
----------------
wbt_lat_usec (RW)
-----------------
If the device is registered for writeback throttling, then this file shows
the target minimum read latency. If this latency is exceeded in a given
window of time (see wb_window_usec), then the writeback throttling will start