[PATCH BUGFIX] block, bfq: fix bug causing crashes

From: Paolo Valente
Date: Mon Jul 03 2017 - 04:01:23 EST

Hi Jens,
I'm writing this short cover letter to hopefully help you decide what
to do with this patch, in this late phase of the development
cycle. This patch fixes a bug causing kernel crashes for at least
one year. Crashes apparently affect only a minority of users, but are
systematic for them (a crash every few tens of minutes for some).


Paolo Valente (1):
block, bfq: don't change ioprio class for a bfq_queue on a service

block/bfq-iosched.c | 14 ++++++++++----
block/bfq-iosched.h | 3 ++-
block/bfq-wf2q.c | 39 ++++++++++++++++++++++++++++++++++-----
3 files changed, 46 insertions(+), 10 deletions(-)