block, bfq: do not raise non-default weights

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BFQ heuristics try to detect interactive I/O, and raise the weight of
the queues containing such an I/O. Yet, if also the user changes the
weight of a queue (i.e., the user changes the ioprio of the process
associated with that queue), then it is most likely better to prevent
BFQ heuristics from silently changing the same weight.

Tested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Paolo Valente 2021-01-22 19:19:46 +01:00 • committed by Jens Axboe

parent ab1fb47e33

commit 91b896f65d

1 changed files with 7 additions and 3 deletions

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block/bfq-iosched.c

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