Hi Jens, unfortunately, the patch "block, bfq: decrease burst size when queues in burst exit", queued for 4.15 [1] introduces a bug, described in detail in the commit message of this patch. If triggered, this bug may cause loss of control on I/O-request service order.
Please queue this fix right after the patch introducing the bug. Thanks, Paolo [1] https://lkml.org/lkml/2017/9/21/144 Paolo Valente (1): block, bfq: fix unbalanced decrements of burst size block/bfq-iosched.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 57 insertions(+), 2 deletions(-) -- 2.10.0
