block: Optimize ioprio_best()
authorBart Van Assche <bart.vanassche@sandisk.com>
Wed, 19 Apr 2017 21:01:28 +0000 (14:01 -0700)
committerJens Axboe <axboe@fb.com>
Wed, 19 Apr 2017 23:38:36 +0000 (17:38 -0600)
commit9a87182c4b69f7ca3ce764bbb4f72641e5a3b2b2
treea0121132c58f41bd3ea558e24fb0a7f5839373af
parent0be0dee64eacd950f8e4b6c45adb5a92392eaaaf
block: Optimize ioprio_best()

Since ioprio_best() translates IOPRIO_CLASS_NONE into IOPRIO_CLASS_BE
and since lower numerical priority values represent a higher priority
a simple numerical comparison is sufficient.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Adam Manzanares <adam.manzanares@wdc.com>
Tested-by: Adam Manzanares <adam.manzanares@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/ioprio.c