On Sat, Dec 02, 2017 at 01:05:05AM +, Bart Van Assche wrote:
> On Sat, 2017-12-02 at 09:00 +0800, Ming Lei wrote:
> > On Sat, Dec 02, 2017 at 12:48:51AM +, Bart Van Assche wrote:
> > > Further tests have shown that the lockup I referred to does not occur
> > > before commit
> > >
On Sat, Dec 02, 2017 at 01:05:05AM +, Bart Van Assche wrote:
> On Sat, 2017-12-02 at 09:00 +0800, Ming Lei wrote:
> > On Sat, Dec 02, 2017 at 12:48:51AM +, Bart Van Assche wrote:
> > > Further tests have shown that the lockup I referred to does not occur
> > > before commit
> > >
On Sat, 2017-12-02 at 09:00 +0800, Ming Lei wrote:
> On Sat, Dec 02, 2017 at 12:48:51AM +, Bart Van Assche wrote:
> > Further tests have shown that the lockup I referred to does not occur
> > before commit
> > b347689ffbca but that it occurs with b347689ffbca.
>
> Then you need to root cause
On Sat, Dec 02, 2017 at 12:48:51AM +, Bart Van Assche wrote:
> On Sat, 2017-12-02 at 08:36 +0800, Ming Lei wrote:
> > On Fri, Dec 01, 2017 at 07:52:14PM +, Bart Van Assche wrote:
> > > On Fri, 2017-12-01 at 10:58 +0800, Ming Lei wrote:
> > > > On Thu, Nov 30, 2017 at 04:08:45PM -0800, Bart
On Sat, 2017-12-02 at 08:36 +0800, Ming Lei wrote:
> On Fri, Dec 01, 2017 at 07:52:14PM +, Bart Van Assche wrote:
> > On Fri, 2017-12-01 at 10:58 +0800, Ming Lei wrote:
> > > On Thu, Nov 30, 2017 at 04:08:45PM -0800, Bart Van Assche wrote:
> > > > blk_mq_dispatch_rq_list() is called. Make sure
On Fri, Dec 01, 2017 at 07:52:14PM +, Bart Van Assche wrote:
> On Fri, 2017-12-01 at 10:58 +0800, Ming Lei wrote:
> > On Thu, Nov 30, 2017 at 04:08:45PM -0800, Bart Van Assche wrote:
> > > blk_mq_sched_mark_restart_hctx() must be called before
> >
> > Could you please describe the theory on
On Fri, 2017-12-01 at 10:58 +0800, Ming Lei wrote:
> On Thu, Nov 30, 2017 at 04:08:45PM -0800, Bart Van Assche wrote:
> > blk_mq_sched_mark_restart_hctx() must be called before
>
> Could you please describe the theory on commit log? Like, why is it
> a must? and what is the issue to be fixed?
On Thu, Nov 30, 2017 at 04:08:45PM -0800, Bart Van Assche wrote:
> blk_mq_sched_mark_restart_hctx() must be called before
Could you please describe the theory on commit log? Like, why is it
a must? and what is the issue to be fixed?
> blk_mq_dispatch_rq_list() is called. Make sure that
>
blk_mq_sched_mark_restart_hctx() must be called before
blk_mq_dispatch_rq_list() is called. Make sure that
BLK_MQ_S_SCHED_RESTART is set before any blk_mq_dispatch_rq_list()
call occurs.
Fixes: commit b347689ffbca ("blk-mq-sched: improve dispatching from sw queue")
Signed-off-by: Bart Van Assche
