[BUGFIX,IMPROVEMENT,V3,0/1] block, bfq: eliminate latency regression with fast drives

Message

Paolo Valente July 18, 2019, 7:08 a.m. UTC

[V3 that mentions the fixed/improved commit]

Hi Jens,
I've spotted a regression on a fast SSD: a loss of I/O-latency control
with interactive tasks (such as the application start up I usually
test). Details in the commit.

I do hope that, after proper review, this commit makes it for 5.3.

Thanks,
Paolo

Paolo Valente (1):
  block, bfq: check also in-flight I/O in dispatch plugging

 block/bfq-iosched.c | 67 +++++++++++++++++++++++++++++----------------
 1 file changed, 43 insertions(+), 24 deletions(-)

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2.20.1