Re: [PATCHSET v2] blk-mq: reimplement timeout handling
Date: Wed Dec 20 2017 - 19:08:15 EST
On Wed, Dec 20, 2017 at 11:41:02PM +0000, Bart Van Assche wrote:
> On Tue, 2017-12-12 at 11:01 -0800, Tejun Heo wrote:
> > Currently, blk-mq timeout path synchronizes against the usual
> > issue/completion path using a complex scheme involving atomic
> > bitflags, REQ_ATOM_*, memory barriers and subtle memory coherence
> > rules. Unfortunatley, it contains quite a few holes.
> Hello Tejun,
> An attempt to run SCSI I/O with this patch series applied resulted in
> the following:
Can you please try the v3? There were a couple bugs that I missed
while testing earlier versions.