Re: blk-mq + bfq: udevd hang on usb2 storages

2017-12-07 Thread Ming Lei
Hi Paolo, On Thu, Dec 07, 2017 at 07:04:54PM +0100, Paolo Valente wrote: > > > Il giorno 04 dic 2017, alle ore 11:57, Ming Lei ha > > scritto: > > > > On Fri, Dec 01, 2017 at 06:04:29PM +0100, Alban Browaeys wrote: > >> I initially reported as https://bugzilla.kernel.org/show_bug.cgi?id=198 >

Re: blk-mq + bfq: udevd hang on usb2 storages

2017-12-07 Thread Paolo Valente
> Il giorno 04 dic 2017, alle ore 11:57, Ming Lei ha > scritto: > > On Fri, Dec 01, 2017 at 06:04:29PM +0100, Alban Browaeys wrote: >> I initially reported as https://bugzilla.kernel.org/show_bug.cgi?id=198 >> 023 . >> >> I have now bisected this issue to commit a6a252e6491443c1c1 "blk-mq- >>

Re: blk-mq + bfq: udevd hang on usb2 storages

2017-12-04 Thread Ming Lei
On Fri, Dec 01, 2017 at 06:04:29PM +0100, Alban Browaeys wrote: > I initially reported as https://bugzilla.kernel.org/show_bug.cgi?id=198 > 023 . > > I have now bisected this issue to commit a6a252e6491443c1c1 "blk-mq- > sched: decide how to handle flush rq via RQF_FLUSH_SEQ". > > This is with an

Re: blk-mq + bfq: udevd hang on usb2 storages

2017-12-01 Thread Ming Lei
On Fri, Dec 01, 2017 at 06:04:29PM +0100, Alban Browaeys wrote: > I initially reported as https://bugzilla.kernel.org/show_bug.cgi?id=198 > 023 . > > I have now bisected this issue to commit a6a252e6491443c1c1 "blk-mq- > sched: decide how to handle flush rq via RQF_FLUSH_SEQ". > > This is with an

blk-mq + bfq: udevd hang on usb2 storages

2017-12-01 Thread Alban Browaeys
I initially reported as https://bugzilla.kernel.org/show_bug.cgi?id=198 023 . I have now bisected this issue to commit a6a252e6491443c1c1 "blk-mq- sched: decide how to handle flush rq via RQF_FLUSH_SEQ". This is with an USB stick Sandisk Cruzer (USB Version: 2.10) I regressed with. systemctl res