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linux/block/blk-sysfs.c
weiping zhang f680474345 blk-sysfs: remove NULL pointer checking in queue_wb_lat_store 
wbt_init doesn't set q->rq_wb to NULL, if wbt_init return 0,
so check return value is enough, remove NULL checking.

Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-23 22:00:17 -07:00

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