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author | Luca Mariotti <mariottiluca1@hotmail.it> | 2021-06-19 16:09:43 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 17:06:36 +0200 |
commit | c37238fae66db055ad9ced2cdefc3d2d2f60023f (patch) | |
tree | 7d56d4d2aec5058e2262b05d082347c52c9afe70 /kernel/time/clocksource.c | |
parent | a1e7400147eb5706323a6c12c439991115f0b6e1 (diff) |
block, bfq: fix delayed stable merge check
[ Upstream commit e03f2ab78a4a673e4af23c3b855591c48b9de4d7 ]
When attempting to schedule a merge of a given bfq_queue with the currently
in-service bfq_queue or with a cooperating bfq_queue among the scheduled
bfq_queues, delayed stable merge is checked for rotational or non-queueing
devs. For this stable merge to be performed, some conditions must be met.
If the current bfq_queue underwent some split from some merged bfq_queue,
one of these conditions is that two hundred milliseconds must elapse from
split, otherwise this condition is always met.
Unfortunately, by mistake, time_is_after_jiffies() was written instead of
time_is_before_jiffies() for this check, verifying that less than two
hundred milliseconds have elapsed instead of verifying that at least two
hundred milliseconds have elapsed.
Fix this issue by replacing time_is_after_jiffies() with
time_is_before_jiffies().
Signed-off-by: Luca Mariotti <mariottiluca1@hotmail.it>
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Pietro Pedroni <pedroni.pietro.96@gmail.com>
Link: https://lore.kernel.org/r/20210619140948.98712-3-paolo.valente@linaro.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/time/clocksource.c')
0 files changed, 0 insertions, 0 deletions