Thread (17 messages) 17 messages, 2 authors, 2018-07-27

Re: [PATCH 5/5] blk-mq: Rework blk-mq timeout handling again

From: Bart Van Assche <hidden>
Date: 2018-07-27 17:14:18

On Fri, 2018-07-27 at 11:04 -0600, Keith Busch wrote:
On Fri, Jul 27, 2018 at 04:59:34PM +0000, Bart Van Assche wrote:
quoted
On Fri, 2018-07-27 at 10:57 -0600, Keith Busch wrote:
quoted
You skip that code if the driver returns BLK_EH_D=
ONT_RESET_TIMER.
quoted
=20
How about applying the following patch on top of this series?
=20
That works for me if you, but it breaks scsi again when
scmd_eh_abort_handler completes the command a second time=
.

How about introducing a new request queue flag that chooses between the
behavior with or without the patch in my previous e-mail? I don't think tha=
t
it is possible to come up with a single implementation that covers the need=
s
of NVMe and SCSI without introducing such a flag. If a SCSI request times o=
ut
then request ownership is transferred from the LLD to the error handler. Fo=
r
the NVMe driver however there is no such transfer of ownership.

Bart.
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