Hello Martin,
The conclusion of a recent discussion is that .jiffies_at_alloc and .retries
should be set once at the start of a lifetime of a SCSI request instead of
every time a request is requeued. This patch series realizes that and also
ensures that a request is unprepared and reprepared when requeued. Please
consider these patches for kernel v4.14.
Thanks,
Bart.
Changes between v2 and v3:
- Removed a WARN_ON_ONCE() statement from the first patch ("Call
scsi_initialize_rq() also for filesystem requests".)
- Fixed handling of jiffies_at_alloc in patch 2/3.
- Converted jiffies_at_alloc to seconds in patch 3/3 before printing.
- Added a fourth patch, namely "scsi-mq: Always unprepare before requeuing a
request".
Changes between v1 and v2:
- Added two more patches next to "Improve requeuing behavior".
Bart Van Assche (4):
Call scsi_initialize_rq() also for filesystem requests
Improve requeuing behavior
Show .retries and .jiffies_at_alloc in debugfs
scsi-mq: Always unprepare before requeuing a request
drivers/scsi/scsi_debugfs.c | 4 +++-
drivers/scsi/scsi_lib.c | 51 ++++++++++++++++++++++++++++++++++++++-------
include/scsi/scsi_cmnd.h | 3 +++
3 files changed, 49 insertions(+), 9 deletions(-)
--
2.14.1
