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linux/block/blk-wbt.h
Jens Axboe d62118b6dd blk-wbt: allow wbt to be enabled always through sysfs 
Currently there's no way to enable wbt if it's not enabled in the
kernel config by default for a device. Allow a write to the
'wbt_lat_usec' queue sysfs file to enable wbt.

This is useful for both the kernel config case, but also if the
device is CFQ managed and it was turned off by default.

Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-28 10:27:03 -07:00

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